Open access peer-reviewed chapter

Causes of Hypoglycemia

Written By

Ala’ Abu-Odeh, Dalal Alnatour and Leen Fino

Submitted: 23 April 2022 Reviewed: 26 April 2022 Published: 30 May 2022

DOI: 10.5772/intechopen.105061

From the Edited Volume

Basics of Hypoglycemia

Edited by Alok Raghav

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Abstract

Blood glucose levels may vary during the day, when this variation goes below a specific limit, hypoglycemia occurs. Hypoglycemia is often associated with reductions in quality of life and even the risk of death. Moreover, hypoglycemia is correlated with physical and/or psychological morbidity. It is usually a result of the complex interaction between hyperinsulinemia and the compromised physiological and behavioral responses attempting to reduce glucose levels. Nevertheless, several conditions can cause hypoglycemia, both in diabetic and non-diabetic patients. Mutually, diabetic and non-diabetic hypoglycemia is common in terms of several medications, alcohol ingestion, critical illnesses, and non-B cell tumors.

Keywords

  • hypoglycemia
  • diabetes
  • drug-induced hypoglycemia
  • nondiabetic hypoglycemia

1. Introduction

Glucose is the main source of energy for your body and brain. It can be synthesized de novo or taken from food. Insulin helps to keep blood glucose at normal levels, so your body can work efficiently. Insulin’s task is to help glucose to enter your cells and produce energy. If your glucose level is too low, hypoglycemia may occur [1].

Hypoglycemia is defined as a low plasma glucose level of less than 50 mg/dL, thus exposing the subject to potential harm. It is associated with several signs—palpitation, sweating, tremors (adrenergic response), dysarthria, confusion, epilepsy, visual disturbances, and coma (neuroglycopenic response) [2, 3, 4]. These affect patients’ quality of life and can even increase the risk of death, particularly in diabetic patients. Furthermore, hypoglycemia is often associated with physical and psychological morbidity (such as generalized worry and mood disturbance) [3, 5]. In diabetic patients, the complex interaction between hyperinsulinemia and the compromised physiological and behavioral responses to reduced glucose levels can lead to hypoglycemia [6].

Diabetes—particularly with the use of insulin or sulfonylurea, that is, insulin secretagogue treatment, is the classical cause of hypoglycemia. Moreover, diverse causes are also common, such as medications, alcoholism, critical illness, cachectic state, cortisol insufficiency, gastric or bariatric surgery, pancreas transplantation, glucagon deficiency, dietary toxins, and various conditions (sepsis, starvation, severe excessive exercise), and insulinoma [3, 7, 8]. Not to mention the non-classical causes that may include congenital hyperinsulinism, insulin receptor mutation, inborn errors of metabolism, and non-islet-cell tumor [9].

The primary cause of hypoglycemia is a complex interaction between hyperinsulinemia and compromised physiologic and behavioral responses to reducing glucose levels (Figure 1).

Figure 1.

Physiologic and behavioral defenses against hypoglycemia in humans.

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2. Diabetic hypoglycemia

Diabetic hypoglycemia is both a physiologic and a clinical condition that is associated with increased mortality and morbidity in both type 1 and type 2 diabetes. Hypoglycemia has proven to have detrimental complications for diabetic patients in both the short and long term [10]. There are several causes of hypoglycemia in diabetic patients, including age, renal insufficiency or end-stage renal disease, pregnancy, and polypharmacy of diabetic medications [10, 11], as shown in (Table 1).

Drugs
 Insulin or insulin secretagogue
 Alcohol
 ACEi
 Β-blockers
 NSAIDs
 Antimalarials
 Antibiotics (ciprofloxacin, levofloxacin, gatifloxacin, and moxifloxacin, antiarrhythmics (like quinine, quinidine))
 Psychotropic medications
Insulin related causes
 Absolute insulin excess
 Relative insulin excess
  1. Exogenous glucose delivery is decreased

  2. Insulin sensitivity is increased

  3. Endogenous glucose production is decreased

Malabsorption
 Celiac disease
 Pancreatic exocrine insufficiency
Diabetes complications
 Gastroparesis
 Neuropathy
Hormone deficiency
 Cortisol
 Growth hormone
 Glucagon
 Epinephrine
 Hypopituitarism
Concurrent illness
 Renal disease
 Hepatic disease
 Cardiac failure
 Sepsis
Non-islet cell tumorPsychological
 Fear of hypoglycemia
 Depression
 Cognitive impairment

Table 1.

Causes of hypoglycemia in diabetic patients.

2.1 Etiology

2.1.1 Drug induced

As mentioned before, hypoglycemia is well known to be associated with diabetes. The risk of hypoglycemia is manifested as a limiting factor and a barrier to optimal treatment and glucose control of type 1 and type 2 diabetes. Although the risk of hypoglycemia is more common in type 1 diabetes, it is prominent in type 2 diabetes with the use of an insulin secretagogue (such as sulfonylurea and glinides) and insulin [6, 10, 12]. Other types of antidiabetic medications have a low incidence of hypoglycemia.

Drug-induced hypoglycemia is not limited to antidiabetic medication use; other medications can also induce hypoglycemia. The most common non-antihyperglycemic medications that are correlated with hypoglycemia are angiotensin-converting enzyme inhibitors (ACEi), beta-blockers (BB), non-steroidal anti-inflammatory drugs (NSAIDs), antimalarials, antiarrhythmics (such as quinine and quinidine), psychotropic medications antibiotics, for example, (cotrimoxazole, ciprofloxacin, levofloxacin, gatifloxacin, and moxifloxacin). In addition, Clarithromycin has also been implicated in many hypoglycemia cases, and the risk of hypoglycemia is exceptionally high in the concomitant use of repaglinide [3, 11, 13]. A systematic review conducted in 2008 and included 448 references assessed 164 drugs associated with hypoglycemia [14], the most commonly mentioned drugs to be linked with hypoglycemia were—quinolones, pentamidine, quinine, beta-blockers, angiotensin-converting enzyme inhibitors (ACEI), and IGF.

2.1.2 Insulin-related causes

2.1.2.1 Absolute insulin excess

Both absolute and relative insulin excess is a major cause of hypoglycemia. Absolute insulin excess occurs due to excessive insulin doses, wrong time of injection, wrong insulin type, and decreased insulin clearance as in renal failure and ill-timed. Therefore, the antidiabetic regimen should be adjusted according to a review of blood glucose patterns. In addition, understanding the pharmacokinetic profile of different types of insulin is a key to dosing insulin safely [6, 8, 10, 15].

2.1.2.2 Relative insulin excess

The relative insulin excess occurs due to:

  1. Decreased exogenous glucose delivery

    The risk of hypoglycemia is increased during overnight fasting and with exercise. A new exercise routine, duration, intensity, and inadequate energy intake can increase insulin sensitivity and glucose utilization. The glucose utilization/insulin dose mismatch can increase the risk of hypoglycemia. It is worth mentioning that insulin doses on days of planned exercise should be well-controlled. Patients need to associate the meal with inulin injection and need to understand how the carbohydrates in their diet affect blood glucose [9, 12, 16]. Inherently, delayed meals, inadequate carbohydrate intake, and skipping meals or snacks can increase the risk of hypoglycemia [17].

  2. Increased insulin sensitivity

    The body’s insulin sensitivity following weight loss or improved glycemic control often increases during midnight [6, 8].

  3. Decreased endogenous glucose production

    The effects of alcohol on blood glucose levels depend on the amount of alcohol consumption and the fed status of the individual. Acute alcohol intake after a fasting state (3–4 days) can induce severe hypoglycemia even in a healthy individual. Alcohol intake has an inhibitory effect on gluconeogenesis [13].

2.1.3 Diabetic complications (gastroparesis, neuropathy)

Gastroparesis, that is, delayed gastric emptying, is common autonomic neuropathy in patients with long-standing diabetes. It results in poor glycemic control and poor nutrition, and dehydration, resulting in frequent hypoglycemia episodes, hospitalizations, and poor quality of life [18, 19]. Neuropathy is also associated with hypoglycemia, particularly hypoglycemia-associated autonomic failure (HAAF). HAAF is a situation in which there is an absence or reduction of insulin secretion, enhancement of glucagon secretion, and/or a defective glucose counter-regulation by epinephrine. These factors induce hypoglycemia by reducing sympathetic neural activity and neurogenic symptoms [20].

2.1.4 Malabsorption (Celiac disease, pancreatic exocrine insufficiency)

Celiac disease is a chronic autoimmune disorder that destructs the small intestine, so the patient is unable to take nutrients in. It is prevalent in type 1 diabetes and causes episodes of hypoglycemia. Pancreatic exocrine insufficiency, which is characterized by a deficiency of exocrine pancreatic enzymes, is also associated with type I and II diabetes.

2.1.5 Hormone deficiency (cortisol, growth hormone, hypopituitarism, glucagon, and epinephrine deficiency in insulin-deficient diabetes)

The hormonal deficiency was found to be associated with hypoglycemia. Cortisol and growth hormone deficiencies, for instance, cause a reduction in gluconeogenesis and increased glucose utilization leading to hypoglycemia. Moreover, isolated glucagon deficiency can also result in hypoglycemia if insulin secretion is not suppressed and the counter-regulatory hormone epinephrine secretion is decreased. Studies also found that hypopituitarism may present with life-threatening hypoglycemia [21].

2.1.6 Concurrent illness (renal, hepatic, or cardiac failure, sepsis)

Hypoglycemia developing secondary to an underlying illness is associated with increased nutritional body demand due to increased metabolic response in critically ill patients. Endogenous glucose production is rapidly reduced in hepatic diseases and liver cirrhosis [22].

As kidneys play a major role in metabolizing insulin, reabsorption and synthesizing glucose, and excretion of different metabolites of hypoglycemic medications. Therefore, kidney impairment will prohibit all these processes leading to hypoglycemia. On the other hand, the counter-regulatory response to hypoglycemia may be defective due to uremia and associated anorexia [21]. On the other hand, in uremia, gluconeogenesis from the kidney and liver is reduced. Hypoglycemia can also occur in acute renal failure and end-stage renal disease (ESR), this is due to reduced renal insulinase-mediated insulin clearance.

Furthermore, severe cardiac failure and hepatic congestion may contribute to lower glucose output from the liver and reduce its intestinal absorption. While hypoglycemia in sepsis and adrenal insufficiency develops due to increased serum cortisol levels [4]. In literature, hypoglycemia in sepsis is often related to strict glycemic control protocols for stress hyperglycemia [23, 24, 25, 26, 27].

2.1.7 Psychological

2.1.7.1 Fear of hypoglycemia

The fear of hypoglycemia is common in patients with diabetes. It influences the quality and health outcomes. It can also increase the risk of poor metabolic control [28].

2.1.7.2 Depression

In diabetic patients with depression, hypoglycemia can occur frequently as a result of poor adherence to medications, diet, physical activity, smoking cessation, poor self-care, and blood glucose monitoring [29].

2.1.7.3 Cognitive impairment

Cognitive dysfunction and dementia may increase the risk of hypoglycemia, especially in elderly patients [30]. Although the association remains unclear, it is thought that person with cognitive disabilities will have errors in taking his medication [21].

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3. Non-diabetic hypoglycemia

3.1 Non-diabetic hypoglycemia: overview

Non-diabetic hypoglycemia (hypoglycemia without diabetes) is a rare condition, it comes from having too much insulin in the blood, leading to low blood glucose levels. It can occur in pre-diabetes, sepsis, and critical organ failure including renal or hepatic failure. It also rarely occurs in cortisol deficiency [8], and β-cell tumors due to endogenous hyperinsulinism [8, 31, 32, 33]. Moreover, hypoglycemia can be accidental, surreptitious, or even malicious [34].

Hypoglycemia can occur post-bariatric surgery, that is, gastric bypass surgery, or even due to an autoimmune disease [8, 32, 33]. Table 2 demonstrates the causes of hypoglycemia in nondiabetic patients.

Drugs
 Salicylates
 Sulfa drug antibiotics
 Pentamidine
 Quinine
Hormone deficiency
 Cortisol
 Growth hormone
 Glucagon
 Epinephrine
 Hypopituitarism
Critical illness
 Renal failure
 Hepatic failure
 Cardiac failure
 Sepsis
 Inanition
Endogenous hyperinsulinism
 Insulinoma
 Nesidioblastosis
 Post-gastric bypass surgery
Non-islet cell tumorInsulin autoimmune hypoglycemia
 Antibody to insulin
 Antibody to the insulin receptor
Intentional/accidental
 Surreptitious
 Malicious
 Factitious
Infancy and childhood
 Preterm
 Infants of DM mother
 Maternal drugs-sulphonylureas
 Rh incompatibility
 Beckwith-Wiedemann syndrome
 Exchange transfusions
 Enzyme defects-glycogen storage the disease I, III, VI.

Table 2.

Causes of hypoglycemia in nondiabetic patients.

3.2 Differential diagnosis

Whipple’s triad (low plasma glucose level, clinical signs or symptoms of hypoglycemia, and resolution of signs or symptoms when the plasma glucose level increases) should be documented prior to initiating an evaluation [35].

When the patient is either looking ill or medicated, the initial diagnosis should focus on the possibility of drug involvement, critical conditions, hormone deficiency, or non-islet cell tumor hypoglycemia. If the patient seems well in the absence of any of the fore-mentioned etiologies, the focus should be on the possibility of having endogenous hyperinsulinism due to insulinomas, functional β-cell disorders, or insulin autoimmune conditions. In addition to the possibility of accidental, surreptitious, or malicious hypoglycemia [35, 36]. Hypoglycemia in patients post-bariatric surgery is increasingly recognized as the frequency of these operations has grown in the last few decades [36].

3.3 Etiology

3.3.1 Drug-induced

Fasting hypoglycemia is found to be associated with several medications, such as salicylates pain killers, antibiotic sulfa drugs, pentamidine, and quinine antimalarial medications [1].

3.3.2 Critical illnesses

Dysglycemia, in the form of hyperglycemia, hypoglycemia, and/or marked glucose variability, is a characteristic feature of critical illness in both diabetic and non-diabetic patients [37]. It can increase morbidity and mortality [38]. Among hospitalized patients, serious illnesses, such as renal, hepatic, or cardiac failure; sepsis; and inanition are the only drugs to cause hypoglycemia.

3.3.2.1 Sepsis

Sepsis is one of the main causes of death across the world and is considered the most familiar cause of death among intensive care unit (ICU) patients [39]. The mortality rate due to sepsis ranges from 15 to 56% [40]. Not to mention that patients with sepsis usually report variable types of dysglycemia due to the changes in endocrine metabolism in sepsis, which affects the stability of the internal environment and worsens their general condition [41].

Sepsis patients are often complicated by hypoglycemia as has been approved by multiple large-scale randomized controlled trials (RCTs). Although such protocols have not been approved to improve patient mortality, rather they possibly increase the risk of hypoglycemia [41]. While there is a dearth of studies on the effects of spontaneous hypoglycemia in patients with sepsis, its occurrence leads to increased mortality and elevated lactate levels in patients with sepsis [41].

In septic patients, increased glucose utilization is induced by cytokine production in macrophage-rich tissues, such as the liver, spleen, and lung. Hypoglycemia develops if glucose production fails to keep pace. Cytokine-induced inhibition of gluconeogenesis in the setting of nutritional glycogen depletion, in combination with hepatic and renal hypoperfusion, may also contribute to hypoglycemia.

3.3.2.2 Hepatic failure

The liver as a metabolic organ plays an important role in glucose metabolism. It regulates the blood glucose level mainly through glycogenolysis and gluconeogenesis. Hepatic impairment is well known to correlate with poor blood glucose regulation [42]. The presence of liver impairment or hepatocellular damage can lead to a disturbance of the metabolic function of the liver causing an imbalance in blood glucose levels. Rapid and extensive hepatic destruction, such as toxic hepatitis, for example, causes fasting hypoglycemia due to the lack of endogenous glucose production.

3.3.2.3 Renal failure

Patients with end-stage kidney disease frequently experience variable glycemic disturbances, with the common incidence of both hypoglycemia and hyperglycemia. The risk of hypoglycemia is increased in critically ill renal patients and having chronic kidney disease is a known risk factor for developing hypoglycemia [4344]. Multiple mechanisms are involved in hypoglycemia development in kidney disease patients, including impaired gluconeogenesis process run by the kidney, impaired insulin clearance by the kidney, and impaired insulin degradation due to uremia.

Other mechanisms of developing hypoglycemia in kidney disease also include increased erythrocyte glucose uptake during hemodialysis, impaired counter-regulatory hormone responses (cortisol, growth hormone), and nutritional deprivation [45, 46, 47, 48, 49]. Moreover, insulin sensitivity may improve in uremic patients after starting renal replacement therapy increases the risk of hypoglycemia in renal replacement patients [50]. In contrast, the risk of hypoglycemia is reduced with starting hemodialysis due to the addition of glucose to the dialysis solution [51].

3.3.2.4 Cardiac failure

Severe heart failure is sometimes associated with hypoglycemia. However, the exact mechanism is yet to be determined. Several mechanisms have been suggested including impaired gluconeogenesis due to hepatic congestion and the reduced glycogen stores from either inadequate intake or reduced gastrointestinal absorption [52, 53, 54].

3.3.2.5 Inanition

Inanition is a well-known cause of hypoglycemia. During starvation, a catabolic state occurs when the body shifts from predominately carbohydrate metabolism to that of fat and protein, the brain then starts conversing and utilizing alternative substrates, such as lactate, pyruvate, and ketone bodies with only a modest counter-regulatory neuroendocrine and autonomic nervous system response.

The refeeding syndrome (RFS) can occur after starvation and energy replenishment. This can be defined as severe electrolyte and metabolic abnormalities in undernourished patients after the introduction of nutrients [55, 56, 57]. Multiple organ systems including cardiac, respiratory, neurologic, and hematologic can be affected by the RFS and are occasionally associated with postprandial hypoglycemia [55, 58].

3.3.3 Hormone deficiencies

Increased cortisol and growth hormone (GH) secretion are involved in the defense mechanism against prolonged hypoglycemia. When these defenses fail to refute the hypoglycemia episode, plasma glucose levels will continue to fall [35].

Chronic cortisol deficiency is typically associated with anorexia and weight loss, likely leading to glycogen depletion. Cortisol deficiency is also associated with impaired gluconeogenesis and low levels of gluconeogenic precursors causing the substrate limited gluconeogenesis, in the setting of glycogen depletion, which leads to hypoglycemia.

Growth hormone deficiency can cause hypoglycemia in young children. In addition to extended fasting, high rates of glucose utilization, such as during exercise and in pregnancy, or low rates of glucose production, such as post-alcohol consumption, can precipitate hypoglycemia in adults with previously undiagnosed hypopituitarism [59].

3.3.4 Non-islet cell tumor hypoglycemia (NICTH)

Hypoglycemia due to non-islet cell tumors abbreviated as NICTH is considered to be rare [8, 31, 32, 33]; it is a rare paraneoplastic syndrome encountered in the setting of a wide variety of tumors and is most common in tumors of mesenchymal or hepatic origin [60]. Hypoglycemia in this realm is initially attributed to glucose consumption by the tumor and to tumor secretion of an “insulin-like” factor afterward, this factor is a precursor of IGF-2, called Big-IGF-2. While secretion of Big-IGF2 is the most common cause of NICTH, secretion of somatostatin or IGF1 may also be responsible [61]. Usually, IGF-2-related hypoglycemia manifests when the tumor turns quite large [62, 63].

3.3.5 Endogenous hyperinsulinism

Endogenous hyperinsulinism is a clinical condition that involves excessive insulin secretion and is related in 55% of cases to insulinoma [64]. Nesidioblastosis and insulinoma represent the main cause of endogenous hyperinsulinemic hypoglycemia in infants and apparently healthy adults, respectively [35]. The main pathophysiological feature of endogenous hyperinsulinism is the failure of insulin secretion to fall to very low levels when plasma glucose concentrations fall to hypoglycemic levels; hypoglycemia in this case is a result of low rates of glucose production, rather than high rates of glucose utilization [65]. Nesidioblastosis is a rare cause of persistent hyperinsulinemic hypoglycemia in adults. The hypoglycemia in the case of nesidioblastosis is attributed to β-cell hypertrophy and hyperfunction [66, 67, 68].

Post-prandial hypoglycemia can also be observed after bariatric surgeries, especially the procedures that divert nutrients into the mid-small bowel, such as Roux-en-Y gastric bypass surgery (RYGB), and not fully restrictive procedures like adjustable gastric banding [69]. Post-RYGB surgery hypoglycemia (PGBH) usually occurs between 1 and 8 years after the procedure [70], this might be due to several causes including late dumping syndrome, nesidioblastosis, and insulinoma [71].

3.3.6 Insulin autoimmune hypoglycemia

Hypoglycemia can also be caused by an antibody to insulin or its receptors, a condition known as insulin autoimmune syndrome (IAS) and also known as Hirata’s disease or insulin autoimmune hypoglycemia (IAH). It is essentially a rare autoimmune disorder caused by the spontaneous production of anti-insulin and anti-insulin receptor antibodies which bind insulin/proinsulin and/or insulin receptors and work as insulin-mimetic leading to predominantly postprandial hyperinsulinemic hypoglycemia [9, 72]. Graves’ disease is frequently present in Hirata syndrome and appears to be particularly prevalent in Japan [73].

3.3.7 Intentional/accidental

Hypoglycemia can also happen accidentally and can be surreptitious, malicious, or sometimes fictitious [74]. Pharmacy errors (e.g., substitution of a hypoglycemic drug for another medication) and medical treatment errors can stand behind some accidental intake cases [75].

Intentional hypoglycemia can be surreptitious and this is most commonly seen in people with knowledge of and access to glucose-lowering medications. It can be malicious which is usually accomplished by the administration of insulin or an insulin secretagogue [74]. It also can be fictitious in some cases.

3.3.8 Infancy and childhood

Hyperinsulinemic hypoglycemia (HH), which is characterized by unregulated insulin release, is the most common cause of persistent and severe hypoglycemia in infants and children [76]. This can be transient (associated with risk factors), or permanent (linked to genetic mutations). In the majority of cases (60–70%) hypoglycemia occurs in the first week of life [77, 78], and it carries a considerable risk of neurological damage and developmental delays if diagnosis and treatment were delayed [76].

HH is also classified as primary and secondary HH. The primary HH, which is also known as congenital HH (CHH), where the hypoglycemia is associated with variants in several genes involved in pancreatic development and function. The secondary HH, where hypoglycemia is associated with syndromes, such as intrauterine growth restriction, maternal diabetes, and birth asphyxia [79].

CHI can be classified according to etiology into two types—acquired and genetic. In neonates, acquired forms are usually associated with some conditions, such as perinatal stress or maternal gestational diabetes, and are often transient [80]. Genetic CHI can be caused by single-gene mutations in the insulin secretory pathway or genes causing syndromes with multiple associated factors, such as Beckwith-Wiedemann syndrome or Kabuki syndrome [78].

Hypoglycemia in infants can also be caused by counter-regulatory hormone deficiencies, such as adrenal insufficiency or GH deficiency [80]. In such cases, replacement of the deficient hormones yields a complete resolution of hypoglycemia. Some metabolic disorders, such as fatty acid oxidation disorders and certain glycogen storage disease types, are additional causes of hypoglycemia in infants and children [81].

References

  1. 1. Desimone ME, Weinstock RS. Non-diabetic hypoglycemia. The Journal of Clinical Endocrinology and Metabolism. 2016;98(10):39A
  2. 2. Seaquist ER, Anderson J, Childs B, Cryer P, Dagogo-Jack S, Fish L, et al. Hypoglycemia and diabetes: A report of a workgroup of the American Diabetes Association and the Endocrine Society. The Journal of Clinical Endocrinology and Metabolism. 2013;98(5):1845-1859
  3. 3. Kalra S, Mukherjee JJ, Venkataraman S, Bantwal G, Shaikh S, Saboo B, et al. Hypoglycemia: The neglected complication. Indian Journal of Endocrinology and Metabolism. 2013;17(5):819
  4. 4. Toor A, Toor A, Krishnamurthy M. Critical illness associated fatal hypoglycemia in a nondiabetic male. Case Reports in Critical Care. USA 2019;2019:1-3
  5. 5. Cryer PE. Hypoglycemia. In: Endocrine Emergencies. USA: Springer; 2021. pp. 27-35
  6. 6. Oyer DS. The science of hypoglycemia in patients with diabetes. Current Diabetes Reviews. 2013;9(3):195-208
  7. 7. Cryer PE, Axelrod L, Grossman AB, Heller SR, Montori VM, Seaquist ER, et al. Evaluation and management of adult hypoglycemic disorders: An Endocrine Society Clinical Practice Guideline. The Journal of Clinical Endocrinology and Metabolism. Elsevier, Amsterdam 2009;94(3):709-728
  8. 8. Cryer PE, Polonsky K. Glucose homeostasis and hypoglycemia. In: Williams Textbook of Endocrinology. Vol. 88. Amsterdam: Elsevier; 2008. pp. 1589-1590
  9. 9. Douillard C, Jannin A, Vantyghem MC. Rare causes of hypoglycemia in adults. 2020 [2213-3941 (Electronic)]
  10. 10. Evans Kreider K, Pereira K, Padilla BI. Practical approaches to diagnosing, treating and preventing hypoglycemia in diabetes. Diabetes Therapy. 2017;8(6):1427-1435
  11. 11. Murad MH, Coto-Yglesias F, Wang AT, Sheidaee N, Mullan RJ, Elamin MB, et al. Drug-induced hypoglycemia: A systematic review. The Journal of Clinical Endocrinology and Metabolism. 2009;94(3):741-745
  12. 12. Lamounier RN, Geloneze B, Leite SO, Montenegro R, Zajdenverg L, Fernandes M, et al. Hypoglycemia incidence and awareness among insulin-treated patients with diabetes: The HAT study in Brazil. Diabetology and Metabolic Syndrome. 2018;10(1):1-10
  13. 13. Kalaria T, Ko YL, Issuree KKJ. Literature review: Drug and alcohol-induced hypoglycaemia. Journal of Laboratory and Precision Medicine. 2021:1-16
  14. 14. Murad MH, Coto-Yglesias F, Wang AT, Sheidaee N, Mullan RJ, Elamin MB, Erwin PJ, et al. Clinical review: Drug-induced hypoglycemia: A systematic review [1945-7197 (Electronic)], USA
  15. 15. Vanek C, Loriaux L. Endocrine Emergencies: Recognition and Treatment. USA: Springer; 2021
  16. 16. Cryer P. Hypoglycemia in Diabetes: Pathophysiology, Prevalence, and Prevention. USA: American Diabetes Association; 2016
  17. 17. Silbert R, Salcido-Montenegro A, Rodriguez-Gutierrez R, Katabi A, McCoy RG. Hypoglycemia among patients with type 2 diabetes: Epidemiology, risk factors, and prevention strategies. Current Diabetes Reports. 2018;18(8):1-16
  18. 18. Krishnasamy S, Abell TL. Diabetic gastroparesis: Principles and current trends in management. Diabetes Therapy. 2018;9(1):1-42
  19. 19. Homko C, Siraj ES, Parkman HP. The impact of gastroparesis on diabetes control: Patient perceptions. Journal of Diabetes and its Complications. 2016;30(5):826-829
  20. 20. Yanai H, Adachi H, Katsuyama H, Moriyama S, Hamasaki H, Sako A. Causative anti-diabetic drugs and the underlying clinical factors for hypoglycemia in patients with diabetes. World Journal of Diabetes. 2015;6(1):30
  21. 21. Martín-Timón I, del Cañizo-Gómez FJ. Mechanisms of hypoglycemia unawareness and implications in diabetic patients. World Journal of Diabetes. 2015;6(7):912
  22. 22. Narla RR, Hashimoto T, Kelly K, Heaney A. Hypoglycemia: A tale of three causes. Journal of Clinical and Translational Endocrinology: Case Reports. 2016;2:4-6
  23. 23. Metzger S, Nusair S, Planer D, Barash V, Pappo O, Shilyansky J, et al. Inhibition of hepatic gluconeogenesis and enhanced glucose uptake contribute to the development of hypoglycemia in mice bearing interleukin-1β-secreting tumor. Endocrinology. 2004;145(11):5150-5156
  24. 24. Brunkhorst FM, Engel C, Bloos F, Meier-Hellmann A, Ragaller M, Weiler N, et al. Intensive insulin therapy and pentastarch resuscitation in severe sepsis. New England Journal of Medicine. 2008;358(2):125-139
  25. 25. Kalfon P, Giraudeau B, Ichai C, Guerrini A, Brechot N, Cinotti R, et al. Tight computerized versus conventional glucose control in the ICU: A randomized controlled trial. Intensive Care Medicine. 2014;40(2):171-181
  26. 26. Tanner O. Intensive versus conventional glucose control in critically ill patients. New England Journal of Medicine. 2009;360(13):1283-1297
  27. 27. Maitra SR, Wojnar MM, Lang CH. Alterations in tissue glucose uptake during the hyperglycemic and hypoglycemic phases of sepsis. Shock. 2000;13(5):379-385
  28. 28. Anderbro T, Gonder-Frederick L, Bolinder J, Lins P-E, Wredling R, Moberg E, et al. Fear of hypoglycemia: Relationship to hypoglycemic risk and psychological factors. Acta Diabetologica. 2015;52(3):581-589
  29. 29. Katon WJ, Young BA, Russo J, Lin EH, Ciechanowski P, Ludman EJ, et al. Association of depression with increased risk of severe hypoglycemic episodes in patients with diabetes. Annals of Family Medicine. 2013;11(3):245-250
  30. 30. Yun J-S, Ko S-H. Risk factors and adverse outcomes of severe hypoglycemia in type 2 diabetes mellitus. Diabetes and Metabolism Journal. 2016;40(6):423-432
  31. 31. Service F. Hypoglycemic disorders. New England Journal of Medicine. 1995;332(17):1144-1152
  32. 32. Service FJ. Classification of hypoglycemic disorders. Endocrinology and Metabolism Clinics of North America. 1999;28(3):501-517
  33. 33. Guettier J-M, Gorden P. Hypoglycemia. Endocrinology and Metabolism Clinics. 2006;35(4):753-766
  34. 34. Marks V, Teale JD. Drug-induced hypoglycemia. Endocrinology and Metabolism Clinics. 1999;28(3):555-577
  35. 35. Cryer PE, Axelrod L, Grossman AB, Heller SR, Montori VM, Seaquist ER, Service FJ, et al. Evaluation and management of adult hypoglycemic disorders: An Endocrine Society Clinical Practice Guideline [1945-7197 (Electronic)]
  36. 36. Madunić J, Madunić IV, Gajski G, Popić J, Garaj-Vrhovac V. Apigenin: A dietary flavonoid with diverse anticancer properties. Cancer Letters. 2018;413:11-22
  37. 37. Van den Berghe G. How does blood glucose control with insulin save lives in intensive care? [0021-9738 (Print)]
  38. 38. Pérez-Calatayud ÁA, Guillén-Vidaña A, Fraire-Félix IS, Anica-Malagón ED, Briones Garduño JC, Carrillo-Esper R. Metabolic control in the critically ill patient an update: Hyperglycemia, glucose variability hypoglycemia and relative hypoglycemia [2444-054X (Electronic)]
  39. 39. Fleischmann C, Scherag A, Adhikari NK, Hartog CS, Tsaganos T, Schlattmann P, et al. Assessment of global incidence and mortality of hospital-treated sepsis. Current Estimates and Limitations [1535-4970 (Electronic)]
  40. 40. Bauer M, Gerlach H, Vogelmann T, Preissing F, Stiefel J, Adam D. Mortality in sepsis and septic shock in Europe, North America and Australia between 2009 and 2019—Results from a systematic review and meta-analysis. Critical Care. 2020;24(1):239
  41. 41. Wang J, Zhu CK, Yu JQ , Tan R, Yang PL. Hypoglycemia and mortality in sepsis patients: A systematic review and meta-analysis [1527-3288 (Electronic)]
  42. 42. Kumar R. Hepatogenous diabetes: An underestimated problem of liver cirrhosis [2230-8210 (Print)]
  43. 43. Fischer KF, Lees JA, Newman JH. Hypoglycemia in hospitalized patients. Causes and Outcomes [0028-4793 (Print)]
  44. 44. Arem R. Hypoglycemia associated with renal failure [0889-8529 (Print)]
  45. 45. Sobngwi E, Enoru S, Ashuntantang G, Azabji-Kenfack M, Dehayem M, Onana A, et al. Day-to-day variation of insulin requirements of patients with type 2 diabetes and end-stage renal disease undergoing maintenance hemodialysis. Diabetes Care. 2010;33(7):1409-1412
  46. 46. Rahhal M-N, Gharaibeh NE, Rahimi L, Ismail-Beigi F. Disturbances in insulin-glucose metabolism in patients with advanced renal disease with and without diabetes. The Journal of Clinical Endocrinology and Metabolism. 2019;104(11):4949-4966
  47. 47. Gianchandani RY, Neupane S, Iyengar JJ, Heung M. Pathophysiology and management of hypoglycemiain end-stage renal disease patients: A review. Endocrine Practice. 2017;23(3):353-362
  48. 48. Mak RH, De Fronzo RA. Glucose and insulin metabolism in uremia. Nephron. 1992;61(4):377-382
  49. 49. Tuttle KR, Bakris GL, Bilous RW, Chiang JL, De Boer IH, Goldstein-Fuchs J, et al. Diabetic kidney disease: A report from an ADA Consensus Conference. Diabetes Care. 2014;37(10):2864-2883
  50. 50. DeFronzo RA, Tobin JD, Rowe JW, Andres R. Glucose intolerance in uremia. Quantification of pancreatic beta cell sensitivity to glucose and tissue sensitivity to insulin [0021-9738 (Print)]
  51. 51. Burmeister JE, Scapini A, da Rosa Miltersteiner D, da Costa MG, Campos BM. Glucose-added dialysis fluid prevents asymptomatic hypoglycaemia in regular haemodialysis [0931-0509 (Print)]
  52. 52. Kittah NE, Vella A. Management of endocrine disease: Pathogenesis and management of hypoglycemia [1479-683X (Electronic)]
  53. 53. Sako A, Yasunaga H, Matsui H, Fushimi K, Hamasaki H, Katsuyama H, Tsujimoto T, et al. Hospitalization with hypoglycemia in patients without diabetes mellitus: A retrospective study using a national inpatient database in Japan. 2008-2012 [1536-5964 (Electronic)]
  54. 54. Mellinkoff SM, Tumulty PA. Hepatic hypoglycemia; its occurrence in congestive heart failure [0028-4793 (Print)]
  55. 55. Boateng AA, Sriram K, Meguid MM, Crook M. Refeeding syndrome: Treatment considerations based on collective analysis of literature case reports [1873-1244 (Electronic)]
  56. 56. Solomon SM, Kirby DF. The refeeding syndrome: A review [0148-6071 (Print)]
  57. 57. Crook MA, Hally V, Panteli JV. The importance of the refeeding syndrome [0899-9007 (Print)]
  58. 58. Heruc GA, Little TJ, Kohn MR, Madden S, Clarke SD, Horowitz M, et al. Effects of starvation and short-term refeeding on gastric emptying and postprandial blood glucose regulation in adolescent girls with anorexia nervosa [1522-1555 (Electronic)]
  59. 59. Reznik Y, Barat P, Bertherat J, Bouvattier C, Castinetti F, Chabre O, et al. SFE/SFEDP adrenal insufficiency French consensus: Introduction and handbook [Consensus sur l’insuffisance surrénale de la SFE/SFEDP: introduction et guide]. Annales d'Endocrinologie. 2018;79(1):1-22
  60. 60. Teale JD, Marks V. Glucocorticoid therapy suppresses abnormal secretion of big IGF-II by non-islet cell tumours inducing hypoglycaemia (NICTH). Clinical Endocrinology. 1998;49(4):491-498
  61. 61. Daughaday WH. Hypoglycemia due to paraneoplastic secretion of insulin-like growth factor-I. The Journal of Clinical Endocrinology and Metabolism. 2007;92(5):1616
  62. 62. Phillips LS, Robertson DG. Insulin-like growth factors and non-islet cell tumor hypoglycemia. Metabolism. 1993;42(9):1093-1101
  63. 63. Dynkevich Y, Rother KI, Whitford I, Qureshi S, Galiveeti S, Szulc AL, et al. Tumors, IGF-2, and hypoglycemia: Insights from the clinic, the laboratory, and the historical archive. Endocrine Reviews. 2013;34(6):798-826
  64. 64. Phan GQ , Yeo CJ, Hruban RH, Littemoe KD, Pitt HA, Cameron JL. Surgical experience with pancreatic and peripancreatic neuroendocrine tumors: Review of 125 patients. Journal of Gastrointestinal Surgery. 1998;2(5):473-482
  65. 65. Rizza RA, Haymond MW, Verdonk CA, Mandarino LJ, Miles JM, Service FJ, et al. Pathogenesis of hypoglycemia in insulinoma patients: Suppression of hepatic glucose production by insulin. Diabetes. 1981;30(5):377-381
  66. 66. Dravecka I, Lazurova I. Nesidioblastosis in adults. Neoplasma. 2014;61(3):252-256
  67. 67. Jabri A, Bayard C. Nesidioblastosis associated with hyperinsulinemic hypoglycemia in adults: Review of the literature. European Journal of Internal Medicine. 2004;15(7):407-410
  68. 68. Anlauf M, Wieben D, Perren A, Sipos B, Komminoth P, Raffel A, et al. Persistent hyperinsulinemic hypoglycemia in 15 adults with diffuse nesidioblastosis: Diagnostic criteria, incidence, and characterization of β-cell changes. The American Journal of Surgical Pathology. 2005;29(4):524-533
  69. 69. Salehi M, Vella A, McLaughlin T, Patti ME. Hypoglycemia after gastric bypass surgery: Current concepts and controversies. The Journal of Clinical Endocrinology and Metabolism. 2018;103(8):2815-2826
  70. 70. Service GJ, Thompson GB, Service FJ, Andrews JC, Collazo-Clavell ML, Lloyd RV. Hyperinsulinemic hypoglycemia with nesidioblastosis after gastric-bypass surgery. The New England Journal of Medicine. 2005;353(3):249-254
  71. 71. Moreira RO, Moreira RB, Machado NA, Gonçalves TB, Coutinho WF. Post-prandial hypoglycemia after bariatric surgery: Pharmacological treatment with verapamil and acarbose. Obesity Surgery. 2008;18(12):1618-1621
  72. 72. Ismail AA. The insulin autoimmune syndrome (IAS) as a cause of hypoglycaemia: An update on the pathophysiology, biochemical investigations and diagnosis. Clinical Chemistry and Laboratory Medicine. 2016;54(11):1715-1724
  73. 73. Paudyal B, Shakya M, Basnyat B. Spontaneous hypoglycaemia in a patient with Graves’ disease. BMJ Case Reports 2016;2016:bcr2016214801
  74. 74. Marks V, Teale JD. Hypoglycemia: Factitious and felonious. Endocrinology and Metabolism Clinics of North America. 1999;28(3):579-601
  75. 75. Bates DW. Unexpected hypoglycemia in a critically ill patient. Annals of Internal Medicine. 2002;137(2):110-116
  76. 76. Banerjee I, Raskin J, Arnoux JB, De Leon DD, Weinzimer SA, Hammer M, et al. Congenital hyperinsulinism in infancy and childhood: Challenges, unmet needs and the perspective of patients and families. Orphanet Journal of Rare Diseases. 2022;17(1):61
  77. 77. Arnoux J-B, Verkarre V, Saint-Martin C, Montravers F, Brassier A, Valayannopoulos V, et al. Congenital hyperinsulinism: Current trends in diagnosis and therapy. Orphanet Journal of Rare Diseases. 2011;6(1):63
  78. 78. Banerjee I, Salomon-Estebanez M, Shah P, Nicholson J, Cosgrove KE, Dunne MJ. Therapies and outcomes of congenital hyperinsulinism-induced hypoglycaemia. Diabetic Medicine. 2019;36(1):9-21
  79. 79. Gϋemes M, Rahman SA, Kapoor RR, Flanagan S, Houghton JAL, Misra S, et al. Hyperinsulinemic hypoglycemia in children and adolescents: Recent advances in understanding of pathophysiology and management. Reviews in Endocrine & Metabolic Disorders. 2020;21(4):577-597
  80. 80. Halaby LP, Steinkrauss L. Hypoglycemia: Symptom or diagnosis? Journal of Pediatric Nursing. 2012;27(1):97-99
  81. 81. Thornton PS, Stanley CA, De Leon DD, Harris D, Haymond MW, Hussain K, et al. Recommendations from the Pediatric Endocrine Society for Evaluation and Management of Persistent Hypoglycemia in Neonates, Infants, and Children. The Journal of Pediatrics. 2015;167(2):238-245

Written By

Ala’ Abu-Odeh, Dalal Alnatour and Leen Fino

Submitted: 23 April 2022 Reviewed: 26 April 2022 Published: 30 May 2022