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Heat stroke (HS) is a serious and potentially life-threatening condition defined as a core body temperature >40.6 degrees C. Two forms of HS are recognized, classic heat stroke, usually occurring in very young or elderly persons, and exertional heat stroke, more common in physically active individuals. An elevated body temperature and neurologic dysfunction are necessary but not sufficient to diagnose HS. Associated clinical manifestations such as extreme fatigue; hot dry skin or heavy perspiration; nausea; vomiting; diarrhea; disorientation to person, place, or time; dizziness; uncoordinated movements; and reddened face are frequently observed. Potential complications related to severe HS are acute renal failure, disseminated intravascular coagulation, rhabdomyolysis, acute respiratory distress syndrome, acid-base disorders, and electrolyte disturbances. Long-term neurologic sequelae (varying degrees of irreversible brain injury) occur in approximately 20% of patients. The prognosis is optimal when HS is diagnosed early and management with cooling measures and fluid resuscitation and electrolyte replacement begins promptly. The prognosis is poorest when treatment is delayed >2 hours.
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PMID:Heat stroke: a comprehensive review. 1546 Oct 44

Hypovolemia alone or in conjunction with other factors is a main reason for acute renal failure in critically ill patients. Various crystalloid and colloid solutions are available to correct hypovolemia. Some of them have been implicated in impairment of renal function. Infusion of large amounts of sodium chloride is associated with increased incidence of nausea, vomiting and hyperchloremic metabolic acidosis. While gelatins and HES are preferred colloids in patients with normal kidney function, there is some evidence that the latter are associated with impaired renal function in patients with pre-existing kidney disease. Any hyperoncotic colloid given in large amounts may decrease glomerular filtration, and should therefore be combined with crystalloids.
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PMID:Prevention of acute renal failure--fluid repletion and colloids. 1564 14

Bismuth salts are widely used to treat peptic ulcers. Acute toxicity with colloidal bismuth subcitrate overdose causes nephrotoxicity. There have been numerous reports of encephalopathy after long-term consumption of bismuth salts, but only a few cases of nephrotoxicity (adult and pediatric) have been documented to date. This report presents a case of acute renal failure due to colloidal bismuth subcitrate overdose in adolescent. A 16-year-old girl presented with complaints of nausea, vomiting, and facial paresthesia. Ten days earlier she had tried to commit suicide by taking 60 tablets of De-nol (colloidal bismuth subcitrate 18 g). The physical examination findings on admission indicated minimal fluid overload but no signs of encephalopathy. Laboratory tests on admission showed blood urea nitrogen 102 mg/dl, serum creatinine 19.9 mg/dl, and serum bismuth level 495 microg/l. The patient was started on appropriate fluid therapy and penicillamine as a chelating agent and then began hemodialysis on alternate days. The patient's renal function gradually returned to normal over 9 weeks and by 64 days after the overdose her serum bismuth level had fallen to almost half the level detected 2 days after admission. The patient made a complete recovery. The case demonstrates that acute renal failure can develop as a manifestation of acute toxicity from colloidal bismuth ingestion, and that the prognosis may be favorable if the patient receives appropriate supportive treatment and dialysis.
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PMID:Acute renal failure after overdose of colloidal bismuth subcitrate. 1594 79

Intravenous immunoglobulin (IVIg) is administered for various indications and generally considered a safe therapy. Most of the adverse effects (AEs) associated with IVIg administration are mild and transient. The immediate AEs include headache, flushing, malaise, chest tightness, fever, chills, myalgia, fatigue, dyspnea, back pain, nausea, vomiting, diarrhea, blood pressure changes, tachycardia, and anaphylactic reactions, especially in IgA-deficient patients. Late AEs are rare and include acute renal failure, thromboembolic events, aseptic meningitis, neutropenia, and autoimmune hemolytic anemia, skin reactions, and rare events of arthritis. Pseudohyponatremia following IVIg is important to be recognized. Renal failure, usually oliguric and transient, occurs mostly on using sucrose-containing products owing to osmotic injury. Among high-risk patients who have a previous renal disease, dehydration, diabetes mellitus, advanced age, hypertension, hyperviscosity, or are treated by other nephrotoxic medications, administration of a non-sucrose-containing IVIg product after accomplishing hydration, in a low concentration and a slow infusion rate while supervising urine output and kidney function, is recommended. Thromboembolic complications occur because of hyperviscosity especially in patients having risk factors including advanced age, previous thromboembolic diseases, being bedridden, diabetes mellitus, hypertension, dyslipidemia, or those receiving high-dose IVIg in a rapid infusion rate. Immediate AEs can be treated by the slowing or temporary discontinuation of the infusion and symptomatic therapy with analgesics, nonsteroidal anti-inflammatory drugs, antihistamines, and glucocorticoids in more severe reactions. Slow infusion rate of low concentration of IVIg products and hydration, especially in high-risk patients, may prevent renal failure, thromboembolic events, and aseptic meningitis.
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PMID:Intravenous immunoglobulin: adverse effects and safe administration. 1639 92

In addition to its U.S. Food and Drug Administration (FDA) approved conditions, immune globulin intravenous (IGIV) is now being used to treat a vast array of autoimmune disorders. Some of the reasons for this overall increase in the use of IGIV include its effectiveness and safety. Despite many years of safe use, side effects and adverse reactions still occur. Common and mild side effects associated with IGIV include: headache, malaise, nausea, low-grade fever, urticaria, arthralgias, and myalgia. These symptoms typically resolve within a few days after their onset. Although rare, the serious and potentially fatal side effects include: anaphylactic reactions, aseptic meningitis, acute renal failure, stroke, myocardial infarction, and other thrombotic complications. Many of these side effects have occurred in patients who have significant, underlying risk factors for the development of the event. Thus, it is vitally important that a thorough and comprehensive medical evaluation be performed on every patient who is being evaluated for potential IGIV therapy. This evaluation can, to some extent, significantly minimize the risk of these side effects. Careful, constant, and close monitoring by trained personnel during the infusion can also result in early detection of such events. Physicians should thoroughly discuss the risks and benefits of IGIV with patients who are being considered for this therapy.
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PMID:Adverse events associated with intravenous immunoglobulin therapy. 1650 16

In Kerala, south-western India, five patients developed systemic envenoming after bites by hump-nosed pit vipers (Hypnale hypnale), proved by identification of the snakes responsible. Two of the dead snakes had been misidentified as saw-scaled vipers (Echis carinatus), while three had remained unidentified. Symptoms of local envenoming were pain, swelling, haemorrhagic blistering, bruising and regional lymphadenopathy. Systemic symptoms included headache, nausea, vomiting and abdominal and chest pain. There was evidence of haemostatic dysfunction (coagulopathy, fibrinolysis, thrombocytopenia or spontaneous systemic haemorrhage) in all cases and of microangiopathic haemolysis in two. Two patients were haemodialysed for acute renal failure, one of whom developed pulmonary oedema requiring mechanical ventilation. In India, H. hypnale has not previously been regarded as a cause of frequent or potentially dangerous envenoming. Its medical importance has been overlooked throughout its geographical range, probably because of confusion with other small species. No specific antivenom exists, yet most patients are treated with non-specific antivenoms, risking reactions without hope of benefit. An effective antivenom is urgently needed in south India and in Sri Lanka, where this species is also a common cause of bites.
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PMID:First authenticated cases of life-threatening envenoming by the hump-nosed pit viper (Hypnale hypnale) in India. 1683 78

We present two cases of a 12-year-old Japanese boy and a 14-year-old Japanese girl who had exercise-induced acute renal failure (ARF). They experienced general fatigue, nausea/vomiting, and vague discomfort in the abdomen after physical exercise at school. In case of the boy, abdominal pain subsided, but renal dysfunction lasted 17 days, with peak levels of creatinine 9.4 mg/dl and uric acid 11.3 mg/dl. On the other hand, as the girl had suffered from hypouricemia before, she followed a doctor's guidance on prevention of ARF. Consequently, she was promptly diagnosed as having exercise-induced ARF associated with hypouricemia, and rapidly recovered from ARF within a week. The difference between their clinical courses suggested a possibility that previous laboratory evaluation of serum uric acid assisted in the management of exercise-induced ARF associated with hypouricemia. School-aged children, especially Japanese and Asian, may be advised to have their serum uric acid measured before starting physical training at school.
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PMID:Renal hypouricemia in school-aged children: screening of serum uric acid level before physical training. 1695 80

Hemolytic uremic syndrome is caused primarily by Shiga toxin-producing Escherichia coli O157:H7. The most common cause of acute renal failure in children, hemolytic uremic syndrome also can occur in adults. Characteristic features of the syndrome are microangiopathic anemia, thrombotic thrombocytopenia, and renal failure. Although the presentation of this syndrome is diverse, the classic prodromal illness is bloody diarrhea following ingestion of hamburger meat contaminated with E. coli O157:H7, the most common mode of infection in the United States. Children with hemolytic uremic syndrome generally present with gastroenteritis complaints (e.g., abdominal pain or tenderness, nausea or vomiting, fever, anemia); affected adults may be asymptomatic. Complications from hemolytic uremic syndrome can include intussusception, chronic renal failure, and seizures in severe cases. Because an incubation period of approximately one week occurs between the start of diarrhea and the onset of hemolytic uremic syndrome, physicians should maintain a high index of suspicion; early laboratory testing is important to diagnose and manage this syndrome. Obtaining a complete blood count and stool culture and performing Shiga toxin testing are the first of a series of tests that may help diagnose hemolytic uremic syndrome.
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PMID:Hemolytic uremic syndrome: an emerging health risk. 1700 34

A 45-year-old Japanese woman was diagnosed in 1996 with squamous cell cancer of the cervix following an abnormal Papanicolaou smear and subsequent diagnostic conization. She underwent total abdominal hysterectomy with pelvic lymphadenectomy and was found to have poorly differentiated squamous cell carcinoma, International Federation of Gynecology and Obstetrics (FIGO) stage IB1. She remained asymptomatic until 2003 when she presented with obstructive uropathy with acute renal failure and hydronephrosis, suspected to be from the recurrence of cervical cancer. This was confirmed when computerized tomography (CT)-guided lymph node biopsy showed squamous cell carcinoma of the para-aortic lymph nodes histologically consistent with the cervical primary. In addition, there was evidence of lumbar spine metastasis by positron emission tomography (PET) and bone scans. She received several courses of chemotherapy with cisplatin and 5-fluorouracil (5FU), as well as radiation therapy. In July 2004, she was hospitalized for acute renal failure, nausea, vomiting, and anorexia. CT of the abdomen identified widespread metastases in the liver, pancreatic head, and lumbar spine. During this hospitalization, she complained of severe scalp tenderness and patchy hair loss first noticed 3 days prior to presentation. On examination of her scalp, two patches of alopecia were observed (Fig. 1). In the largest patch, there was a 5 x 2.5-cm, tender, erythematous plaque with atrophy. In the smaller patch, there was a 2 x 1.5-cm, erythematous, scaly plaque. A punch biopsy of the larger patch revealed atypical epithelial cells in nests with intravascular involvement and diminished numbers of focally miniaturized hair follicles (Fig. 2a). The scalp specimen was histologically identical with biopsy specimens of the cervical primary (Fig. 2b). There was also seborrheic dermatitis, with thick greasy scale, noted on the scalp, which resolved with fluocinolone solution. The patient decided against further treatment for her advanced cervical cancer but did accept hydromorphone for pain. She died 3 months after admission.
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PMID:Cervical cancer metastasis to the scalp presenting as alopecia neoplastica. 1726 74

Intravenous immunoglobulin (IVIg) is administered both for the treatment of immunodeficiencies and for an expanding list of autoimmune diseases. Most adverse effects are mild and transient including headaches, flushing, fever, chills, fatigue, nausea, diarrhea, blood pressure changes and tachycardia. IgA deficiency-related anaphylactic reactions are largely preventable. Late adverse events are rare and include acute renal failure and thromboembolic events. Acute renal failure, usually oliguric and transient, occurs generally in insufficiently hydrated patients and with sucrose-stabilized products due to osmotic injury. Thromboembolic complications occur due to hyperviscosity especially in patients having risk factors including advanced age, previous thromboembolic events, immobilization, diabetes mellitus, hypertension, dyslipidemia or those receiving high-dose IVIg in a rapid infusion rate or excessive dose. Slow infusion rate and good hydration may prevent renal failure, thromboembolic events and aseptic meningitis. In our experience in more than 200 patients receiving IVIg for different autoimmune diseases and near 10000 infusions for relapsing-remitting multiple sclerosis patients, the occurrence of adverse effects was 24-36% after high dose IVIg, most were headaches and all were mild adverse events. We conclude that IVIg is a safe therapy when given in a slow infusion rate in well-hydrated patients, better avoiding patients with known risk factors.
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PMID:Safety of intravenous immunoglobulin (IVIG) therapy. 1731 19


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