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A retrospective study was conducted of possible and definite snake bite admissions to Madang General Hospital, Papua New Guinea, for the years 1977 to 1986 inclusive. There were 175 such admissions and case notes were found for 129. Envenoming was recorded in 64 cases. Tender regional lymphadenopathy and ptosis were the most common signs of envenoming. No case of coagulopathy was recorded. 16 cases had clinical evidence of myotoxicity; in 3 of these a description of the offending snake suggested that it was the small-eyed snake (Micropechis ikaheka). Among 41 patients receiving antivenom, there was only one serious adverse reaction. This is the first study of snake bite in the New Guinea region; it shows similarities with, but also important differences from, snake bite studies in the Papua region of Papua New Guinea.
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PMID:Ten years of snake bite in Madang Province, Papua New Guinea. 323 97

In Sri Lanka, Russell's viper, Vipera russelli pulchella, kills more people than any other species of snake. At Anuradhapura in the dry central zone of the island we studied 23 patients with systemic envenoming after proven bites. Seventy-three per cent had swelling at the bite site. Neurotoxicity was the commonest sign of systemic envenoming: 82 per cent had external ophthalmoplegia and 77 per cent had ptosis. Incoagulable blood was found in 59 per cent but only 36 per cent had spontaneous bleeding. Other signs included generalized muscle tenderness (32 per cent), black urine (27 per cent) and persistent oliguria (9 per cent). Laboratory studies showed evidence of a severe clotting disorder: fibrinogen was often depleted as were factors V and X. Fibrin degradation products, including cross-linked moieties, were grossly elevated, clear evidence for enhanced fibrinolysis. Intravascular haemolysis, unrelated to G6PD deficiency, was often present. Myoglobin was detected in the plasma of all 19 patients tested (range 100- greater than 8000 ng/ml) and in the urine in 14 of 18 patients (110- greater than 16,000 ng/ml). Venom antigen (16.5-702 ng/ml) was detected by specific ELISA in the serum of all patients. Its concentration fell with the administration of 50-200 ml of Haffkine polyspecific antivenom raised against Indian venoms. Complete permanent clearance of venom antigen from the circulation was seen in only one of 21 patients who were followed until discharge. Blood coagulability was restored between one and 25 h (mean 8.8) after the first dose of antivenom in the 12 surviving patients whose clotting defect could be followed; no dramatic reversal of neuromyotoxic signs was seen. Haffkine antivenom thus has limited efficacy against systemic poisoning by Russell's viper in Sri Lanka.
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PMID:Paralysis, rhabdomyolysis and haemolysis caused by bites of Russell's viper (Vipera russelli pulchella) in Sri Lanka: failure of Indian (Haffkine) antivenom. 325

The clinical features in a 42 year old man with malignant atrophic papulosis with CNS involvement are described. They included mental dysfunction, paraesthesiae, weakness of left limbs, with pyramidal tract signs, bilateral ptosis, progressing to total ophthalmoplegia and obtundation. There were two crops of characteristic papular lesions on trunk and limbs, with terminal evidence of a coagulopathy and bruises, resulting in death in six months. Papular biopsy revealed multiple microinfarcts in the dermal collagen. The brain showed multiple small haemorrhagic infarcts of both hemispheres, the lower mid-brain, pons and a cerebellar peduncle. Microscopy showed fibrin exudation in the leptomeninges, various stages of thrombosis of small arteries without inflammatory reaction, and corresponding acute and subacute microinfarcts. The pathogenetic basis of the disease appeared to be a combined vasculopathy and coagulopathy.
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PMID:CNS involvement in malignant atrophic papulosis (Kohlmeier-Degos disease): vasculopathy and coagulopathy. 721 73

A young man in Germany was bitten by a large captive saw-scaled viper (Echis 'pyramidum'-complex) of Tunisian origin. During the first few hours after the bite he developed evidence of disseminated intravascular coagulation and fibrinolysis, and bled spontaneously. Despite being given a total of 310 ml of three different Echis-specific antivenoms (together with large amounts of fresh frozen plasma and concentrated clotting factors), venom antigenaemia (measured by enzyme immunoassay) and coagulopathy persisted for more than 10 days, and he developed a haemolytic anaemia and mild renal dysfunction. Transient bilateral ptosis was attributed to envenoming. The venom of the snake responsible for the bite was immunologically distinct from that of Nigerian E. ocellatus and was clearly not neutralised by the three monospecific antivenoms which had been administered. This case is another illustration of the geographical variation in snake venoms and the need for pooling venoms from snakes from different parts of the geographical range in the preparation of antivenoms. Envenoming by North African Echis species may not be reversible by available antivenoms.
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PMID:Neurotoxicity, haemostatic disturbances and haemolytic anaemia after a bite by a Tunisian saw-scaled or carpet viper (Echis 'pyramidum'-complex): failure of antivenom treatment. 798 98

Two cases of neurological dysfunction are presented. Neurological deficits after recovery from anaesthesia are unusual in young women perioperatively. In the first case, a 39-yr-old woman presented at 36-wk gestation with antepartum haemorrhage and in labour. Pregnancy had been complicated by pre-eclampsia and she underwent emergency Caesarean section under general anaesthesia without complication. The trachea was extubated when she was awake but almost immediately she became hypertensive, obtunded and reintubation was required. Her pupils became fixed and dilated but the Computerised Axial Tomogram (CT) was normal. A coagulopathy was evident. She made a full neurological recovery within 24 hr. On the same day, a previously healthy 41-yr-old woman who had undergone uneventful surgery for uterine prolapse 24 hr previously developed headache, nausea and over the next four hours signs of progressive brainstem ischaemia. The CT scan showed oedema of the mid- and hindbrain. Brainstem death was confirmed 12 hr later and the post-mortem revealed acute dissection of the vertebral artery secondary to cystic medial necrosis. Such dramatic neurological sequelae are rare but the importance of identifying "at risk" groups is underlined as is early recognition of neurological injury postoperatively.
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PMID:Unexpected neurological deficits following recovery from anaesthesia. 800 39

One encounters a variety of radiopaque foreign objects when reviewing plain film radiographs of the abdomen. Recognizing such devices can offer important clues about a patient's medical history. Accordingly, intrauterine contraceptive devices (IUCD), tubal sterilization, varicoceles, inferior vena cava (IVC) filtration, and vaginal pessaries are discussed with reference made to an IUD, tubal sterilization clips, embolization coils for bilateral varicoceles, an IVC filter, and a vaginal pessary in five attached anteroposterior radiographs of the lower abdomen and pelvis for five different patients. IUCDs confer long-term, passive, reversible, and inexpensive protection against unwanted pregnancy. They may, however, induce menstrual complications as well as an increased risk of pelvic inflammatory disease and ectopic pregnancy. They can also be spontaneously expelled from the uterus without being noticed by the client. An IUCD increases the risk of spontaneous abortion unless removed in cases where intrauterine pregnancy occurs. Complications at the time of insertion include pain, syncope, and uterine perforation. Tubal sterilization is an effective, though largely irreversible method of contraception. Complications include an increased risk of ectopic gestation in the event of pregnancy and the usual risks of hemorrhage, infection, injury to adjacent structures, and anesthesia-related complications. A varicocele is a dilation of the pampiniform venous plexus of the scrotum. They are more often unilateral than bilateral, occurring in up to 20% of men most often on the left side. Although most cases are probably insignificant, varicoceles can decrease sperm count and motility and cause abnormal morphology. Correction of varicoceles has been shown to improve sperm quality and can increase the chances of fertility. Percutaneous venous embolization techniques have recently been developed to that end. Procedural risks include perforation of the vein, intimal dissection, inadvertent embolization of vessels via collateral channels, and reactions to contrast media. IVC filters are a feasible alternative treatment for deep venous thrombosis and pulmonary embolism among patients in whom anticoagulants are contraindicated or for those in whom anticoagulation therapy has failed. Introduced via the femoral or jugular veins, they are permanent metallic devices placed within the lumen of the IVC to filter thrombi which migrate from the deep veins of the lower extremities. Contraindications to IVC filter insertion include severe coagulopathy and thrombosis involving all venous access routes, while complications include hematoma at the insertion site, migration or tilting of the device due to poor anchoring in the IVC wall, and vena cava obstruction. A pessary is a prosthetic device used to support pelvic structures when their natural support is lacking. They are usually made of plastic or rubber and inserted into the vagina to aid in the non-operative treatment of uterine prolapse, proctoceles, and cystoceles. They must be properly fitted and removed every few months for cleaning.
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PMID:Radiology rounds. Intrauterine contraceptive device. 821 57

An 18-year-old man was bitten on the hand by a snake he believed to be a Southern Pacific rattlesnake (Crotalus viridis helleri). Within minutes he developed generalized weakness, difficulty breathing, diplopia, dysphagia, and dysphonia. Neurological examination revealed ptosis and decreased motor strength. These symptoms partially improved after administration of Antivenin (Crotalidae) Polyvalent, but the patient continued to have difficulty walking for several days due to weakness. In addition to neurological symptoms, the patient also experienced pain immediately after the bite occurred and rapid swelling of the entire extremity, which extended beyond the shoulder. He complained of a metallic taste in his mouth and developed intense muscle fasciculations of the face, tongue, and upper extremities, which lasted for 2 days and did not improve with antivenin treatment. He exhibited laboratory evidence of coagulopathy and rhabdomyolysis. Although neurotoxins are known to occur in the venom of certain populations of rattlesnakes, only a few clinical reports describing severe neurological symptoms appear in the literature. To our knowledge, this is the first reported case of neurotoxicity associated with a suspected Southern Pacific rattlesnake envenomation.
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PMID:Neurotoxicity associated with suspected southern Pacific rattlesnake (Crotalus viridis helleri) envenomation. 1062 85

The only venomous reptile that naturally occurs in Poland is the adder or common viper (Vipera berus). Its bites are not of great epidemiological importance, but in some cases serious life-threatening symptoms may appear. The most common symptoms of adder envenomation are: local edema, reddening and pain of the bitten site and also the general symptoms coming from the alimentary tract (vomiting, diarrhoea, abdominal pain), the circulatory system (hypotension, shock, ECG abnormalities), the central nervous system (sleepiness, vertigo, disorientation, loss of consciousness), hematological symptoms (leukocytosis, hemolysis, coagulopathy) and allergic symptoms (fever, urticaria, angio-oedema). In the present study we described the case of a twenty-year-old patient hospitalized at the Toxicology Department of the Collegium Medicum UJ after a viper bite. Except for some above-mentioned symptoms he also developed ocular symptoms like ptosis and blurred vision. Such symptoms after the common viper bite have not been described in the literature till now. The cause of them seems to be an intense allergic reaction in the region of the orbit and eyelids all the more so because the patient had the positive allergy history. However, taking into account the latest reports from the literature, a neurotoxic action of some components of the Vipera berus venom may also play a role. Because of the developing general symptoms a specific equine antivenom was administered to the patient, apart from the supportive care, without any serious side effects that usually are observed after the use of such a kind of sera. It is thought that the sheep antivenom is better than the equine one considering a lack of allergic side effects. As a result of applied treatment the local and general symptoms including ocular symptoms subsided.
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PMID:[Envenoming by common viper (Vipera berus)--subject still exists...]. 1552 21

Three infants with infant botulism are presented to illustrate how atypical, early, and severe features may obscure or delay diagnosis. Two boys aged 6 weeks and 20 days, respectively, presented with rapid deterioration after brief periods of poor feeding, one with an apparent life-threatening event at home and the other with a full cardiopulmonary arrest. Initial abnormal laboratory findings of coagulopathy suggested sepsis in the first infant. In the second infant, severe acidosis and hypoglycemia suggested an underlying metabolic disorder. A third infant, aged 1 month, was hospitalized originally with an admitting diagnosis of "pharyngitis" resulting from his inability to take adequate feedings. He received intravenous fluids and antibiotics. One week later he suffered a respiratory arrest. Laboratory findings of severe hyponatremia and acidosis at the time of his arrest suggested a metabolic etiology. Even retrospectively, none of these infants had the typical initial complaint of constipation, and none were noted to have ptosis or facial weakness before catastrophic collapse. However, in each case, the parent had initially brought the child to the physician for "poor feeding" or "poor suck," which was not recognized by medical personnel as a result of bulbar weakness. Ultimately, all 3 infants were found to have infant botulism. All 3 had received antibiotics before catastrophic collapse, possibly contributing to the rapidity of the deterioration. Each recovered, although the delay in diagnosis made them ineligible for treatment with botulism immunoglobulin.
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PMID:Catastrophic presentation of infant botulism may obscure or delay diagnosis. 1614 Jun 90

Vaginal pessaries are routinely used for initial management of pelvic organ prolapse and for women who are poor surgical candidates. Serious complications of long-term use without routine follow-up include erosion into surrounding organs and the development of fistulas. It is unclear however, if long-term use and chronic irritation could potentially contribute to development or delay the diagnosis of vaginal or cervical cancers. A 72-year-old Caucasian woman with a vaginal pessary retained for 3 years, who presented with leukocytosis and coagulopathy, was discovered to have stage II vaginal adenosquamous carcinoma upon surgical pessary removal. Chronic irritation and lack of follow-up with pessary use may contribute to masking the development and delaying the diagnosis of vaginal cancer in women with risk factors. Pessary use requires frequent follow-up to prevent complications.
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PMID:What is hiding behind the pessary? 2279 Apr 89


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