1/452. Newborn hypoglycemia.Neonatal hypoglycemia is a common problem encountered by both term and preterm infants. It can be either symptomatic or asymptomatic. Prolonged hypoglycemia may result in permanent neurologic impairment and death. Definitions of hypoglycemia vary and remain controversial. Underlying causes of hypoglycemia include (a) inadequate glucose production; (b) increased glucose utilization; (c) abnormalities of endocrine regulation; and (d) other causes. nurse practitioners must be aware of infants at risk for hypoglycemia so they can provide appropriate interventions. In this article the clinical characteristics of hypoglycemia are reviewed, various causes for hypoglycemia are identified, and an infant with prolonged hypoglycemia is described. In addition, the role of the nurse practitioner in the care and management of these infants is addressed.- - - - - - - - - - ranking = 1keywords = glucose (Clic here for more details about this article) |
2/452. Recurrent hypoglycaemia in multiple myeloma: a case of munchausen syndrome by proxy in an elderly patient.A 73-year-old woman with multiple myeloma experienced four episodes of loss of consciousness, convulsions and profuse sweating whilst she was in the hospital. A thorough investigation in the department of medicine disclosed that with each attack, she had a serum glucose < 1.6 mM L-1, insulin level > 1400 pMol L-1 (N- < 150) and a normal level of serum c-peptide. Since she had no anti-insulin antibodies (which may rarely exist in multiple myeloma), a diagnosis of exogenous injection of insulin was made. A search for a possible perpetrator discovered that the patient had a daughter who was a surgical nurse and who was genuinely concerned whenever she was told that her mother was about to be discharged from the hospital. If she was the perpetrator in the present case, then it is possible that the motive for such an action was to postpone the mother's discharge from hospital. This case is an example of a 'factitious disease by proxy' in an elderly patient. The aim of the present report is to alert the medical personnel to the possibility that Munchausen's syndrome by proxy may also occur in the elderly.- - - - - - - - - - ranking = 0.5keywords = glucose (Clic here for more details about this article) |
3/452. insulinoma with hyperproinsulinemia during hypoglycemia and loss of expression of vacuolar-type H( )-ATPase (V-ATPase) in the tumor tissue.hypoglycemia with a low serum immunoreactive insulin (IRI) level and serum immunoreactive c-peptide (IRC) level was found in a 74-yr-old female. Although a fasting test induced hypoglycemia, the responses of IRI and IRC during the fasting test, and the results of a glucose tolerance test, glucagon test, and secretin test did not indicate the presence of an insulinoma. However, the serum proinsulin level before the fasting test was 130.5 pmol/L (N: 3.0-10.0 pmol/L), and this high level was maintained throughout the test. Soon after surgical enucleation of the tumor, the patient's blood glucose levels increased. Postoperatively, the hypoglycemic status resolved, and the serum proinsulin levels returned to normal (2.8 pmol/L). Histopathological studies revealed a typical insulinoma. Immunohistochemical studies by the recently developed method for vacuolar-type H (V-ATPase), which is responsible for acidification of the intracellular compartments in eukaryotic cells, showed that normal islets stained positive, but not the tumor. This finding indicates that the insulin-secretory granules in the insulinoma cells existed in a microenvironment in which V-ATPase activity had been lost. This suggests that the reduced activity of V-ATPase on the endomembrane of the insulin-secretory granules in insulinomas may result in loss of the acidic microenvironment and impaired conversion of proinsulin by converting enzymes.- - - - - - - - - - ranking = 1keywords = glucose (Clic here for more details about this article) |
4/452. Recognizing factitious hypoglycemia in the family practice setting.BACKGROUND: Factitious hypoglycemia is a deliberate attempt to induce a low serum glucose level using either insulin or oral hypoglycemic agents. Sulfonylurea-induced hypoglycemia is more common than incidents of insulin abuse, and hypoglycemia caused by these oral agents is biochemically indistinguishable from insulinoma. methods: We describe a case of factitious hypoglycemia resulting from insulin abuse in an adult diabetic patient, review the essentials of glucose homeostasis, and describe diagnostic tests that allow a differential diagnosis. RESULTS AND CONCLUSION: Factitious hypoglycemia is associated with a higher incidence of suicide, depression, and personality disorders. Insulin-induced hypoglycemia can be detected by an insulin to c-peptide ratio that is greater than 1.0. In the absence of proof to the contrary, insulinoma should be considered the cause of hypoglycemia until another diagnosis is established. The generally poor prognosis for patients with factitious hypoglycemia underscores the importance of early recognition of factitious disorders.- - - - - - - - - - ranking = 1keywords = glucose (Clic here for more details about this article) |
5/452. Anesthetic considerations of two sisters with beckwith-wiedemann syndrome.Anesthetic considerations of 21-mo-old and 4-yr-old sisters with beckwith-wiedemann syndrome during surgical repair of cleft palate and reduction of macroglossia are presented and discussed. This syndrome is characterized by exomphalos, macroglossia, gigantism, hypoglycemia in infancy, and many other clinical features. This syndrome is also known as exomphalos, macroglossia, and gigantism (EMG) syndrome. Principal problems associated with anesthetic management in this syndrome are hypoglycemia and macroglossia. Careful intraoperative plasma glucose monitoring is particularly important to prevent the neurologic sequelae of unrecognized hypoglycemia. It is expected that airway management would be complicated by the macroglossia, which might cause difficult bag/mask ventilation and endotracheal intubation following the induction of anesthesia and muscle paralysis, so preparations for airway difficulty (e.g., awake vocal cord inspection) should be considered before induction. A nasopharyngeal airway is useful in relieving postoperative airway obstruction.- - - - - - - - - - ranking = 0.5keywords = glucose (Clic here for more details about this article) |
6/452. Noninsulinoma pancreatogenous hypoglycemia: a novel syndrome of hyperinsulinemic hypoglycemia in adults independent of mutations in Kir6.2 and SUR1 genes.In adults, endogenous hyperinsulinemic hypoglycemia is almost invariably due to insulinoma. In these patients with insulinoma, neuroglycopenic episodes exclusively after meal ingestion and negative 72-h fasts are extraordinarily rare. We describe five adults with neuroglycopenic episodes from hyperinsulinemic hypoglycemia within 4 h of meal ingestion and negative 72-h fasts. Each had negative transabdominal ultrasonography, spiral computed tomographic scanning, and celiac axis angiography of the pancreas. However, all showed positive selective arterial calcium stimulation tests indicative of pancreatic beta-cell hyperfunction. At pancreatic exploration, no insulinoma was detected by intraoperative ultrasonography and complete mobilization and palpation of the pancreas. Moreover, the resected pancreata showed islet hypertrophy and nesidioblastosis, but no insulinoma. No definite disease-causing mutation was detected in Kir6.2 and SUR1 genes, which encode the subunits of the pancreatic ATP-sensitive potassium channel responsible for glucose-induced insulin secretion. Four patients who underwent gradient-guided partial pancreatectomy have been free of hypoglycemic symptoms for up to 3 yr follow-up; the other, who underwent a limited distal pancreatectomy, has had brief recurrence of symptoms. The unique clinical features and responses to dynamic testing in these adults with hyperinsulinemic hypoglycemia in the absence of insulinoma may constitute a new syndrome of postprandial hypoglycemia from diffuse beta-cell hyperfunction.- - - - - - - - - - ranking = 0.5keywords = glucose (Clic here for more details about this article) |
7/452. Hepatic and pulmonary metastases from a meningeal hemangiopericytoma and severe hypoglycemia due to abnormal secretion of insulin-like growth factor: a case report.A 42-year-old woman was hospitalized for severe hypoglycemic coma. She had a voluminous hepatic metastasis and multiple small lung metastases from a meningeal hemangiopericytoma initially operated on 11 years earlier. High blood levels of an abnormal form of insulin-like growth factor type 2 (IGF II) associated with low blood levels of insulin, growth hormone, IGF I, and IGF BP3 were observed. After surgical resection of the liver and pulmonary metastases, serum glucose levels and hormonal abnormalities returned to normal.- - - - - - - - - - ranking = 0.5keywords = glucose (Clic here for more details about this article) |
8/452. Hyperinsulinaemic hypoglycaemia associated with persistent hyperammonaemia.Two cases of hyperinsulinaemic hypoglycaemia associated with persistent hyperammonaemia in unrelated infants of 7 days and 4 months of age are reported. Blood ammonia levels were 100-300 micromol/l (normal values <40 micromol/l). The hyperammonaemia was asymptomatic and not associated with any of the abnormalities of amino acids or organic acids observed in urea cycle enzyme defects. Orotic aciduria was normal. The hyperammonaemia was not influenced by the levels of blood glucose nor by subtotal pancreatectomy. On admission blood glucose was ca. 1.2 mmol/l (21.6 mg/dl) corresponding to blood insulin levels of 35 and 22 mU/l respectively in both infants. Continuous intravenous glucose perfusion was necessary to prevent hypoglycaemia. Furthermore 2-oxoglutaric acid in urine was increased in the second infant to 3.15 mg/mg creatinine (normal 0.41 /-0.12). This may point to mutations in the glutamate dehydrogenase gene. CONCLUSION: 2-Oxoglutaric aciduria may be an important clue to the diagnose in this syndrome.- - - - - - - - - - ranking = 1.5keywords = glucose (Clic here for more details about this article) |
9/452. hypoglycemia induced by interaction between clarithromycin and disopyramide.A 59-year-old man receiving hemodialysis was hospitalized due to severe hypoglycemic attack. The patient had been treated with disopyramide (50 mg/day) because of paroxysmal atrial fibrillation. hypoglycemia occurred after taking clarithromycin (CAM, 600 mg/day), a macrolide antibiotic. The serum disopyramide concentration reached 8.0 micrograms/ml (23.6 microM) in the presence of CAM, while it was 1.5 micrograms/ml before the addition of CAM. A 75 g oral glucose tolerance test and daily profiles of blood glucose value showed that blood glucose levels were significantly lower in the presence of CAM and disopyramide compared to that in the absence of these drugs. The Turner index in the presence of CAM and disopyramide was significantly higher than that in the absence of these drugs, suggesting that a toxic concentration of disopyramide enhanced insulin secretion, resulting in the induction of hypoglycemic attacks, in which the inhibitory effects of CAM on the hepatic chytochrome P-450 might be involved. QT and QTc intervals were prolonged in the presence of CAM and disopyramide, but torsades de points were not observed in this patient receiving nicorandil (15 mg/day). Thus, it should be taken into account that life-threatening hypoglycemia may result from the interaction between clarithromycin and disopyramide.- - - - - - - - - - ranking = 1.5keywords = glucose (Clic here for more details about this article) |
10/452. anorexia nervosa with severe liver dysfunction and subsequent critical complications.A twenty-year-old woman with anorexia nervosa (body mass index=11) suffered from severe liver dysfunction (aspartate aminotransferase 5,000 IU/l, alanine aminotransferase 3,980 IU/l, prothrombin time 32%), hypoglycemia (serum glucose 27 mg/dl), and pancreatic dysfunction (amylase 820 IU/l, lipase 558 IU/l). She fell into a depressive state with irritability, which was not improved by intravenous glucose. Despite treatment with plasmapheresis for the liver dysfunction, she subsequently developed pulmonary edema, acute renal failure, gastrointestinal bleeding, and disseminated intravascular coagulation. Hemodialysis, mechanical ventilation and drug therapy including prednisolone, prostaglandin E1, and branched-chain amino acid, improved her critical condition. In this case, malnutrition may have been the cause for the liver dysfunction and subsequent complications.- - - - - - - - - - ranking = 1keywords = glucose (Clic here for more details about this article) |
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