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Query: UMLS:C0000737 (abdominal pain)
 31,184 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Hydrogen peroxide is an oxidising agent that is used in a number of household products, including general-purpose disinfectants, chlorine-free bleaches, fabric stain removers, contact lens disinfectants and hair dyes, and it is a component of some tooth whitening products. In industry, the principal use of hydrogen peroxide is as a bleaching agent in the manufacture of paper and pulp. Hydrogen peroxide has been employed medicinally for wound irrigation and for the sterilisation of ophthalmic and endoscopic instruments. Hydrogen peroxide causes toxicity via three main mechanisms: corrosive damage, oxygen gas formation and lipid peroxidation. Concentrated hydrogen peroxide is caustic and exposure may result in local tissue damage. Ingestion of concentrated (>35%) hydrogen peroxide can also result in the generation of substantial volumes of oxygen. Where the amount of oxygen evolved exceeds its maximum solubility in blood, venous or arterial gas embolism may occur. The mechanism of CNS damage is thought to be arterial gas embolisation with subsequent brain infarction. Rapid generation of oxygen in closed body cavities can also cause mechanical distension and there is potential for the rupture of the hollow viscus secondary to oxygen liberation. In addition, intravascular foaming following absorption can seriously impede right ventricular output and produce complete loss of cardiac output. Hydrogen peroxide can also exert a direct cytotoxic effect via lipid peroxidation. Ingestion of hydrogen peroxide may cause irritation of the gastrointestinal tract with nausea, vomiting, haematemesis and foaming at the mouth; the foam may obstruct the respiratory tract or result in pulmonary aspiration. Painful gastric distension and belching may be caused by the liberation of large volumes of oxygen in the stomach. Blistering of the mucosae and oropharyngeal burns are common following ingestion of concentrated solutions, and laryngospasm and haemorrhagic gastritis have been reported. Sinus tachycardia, lethargy, confusion, coma, convulsions, stridor, sub-epiglottic narrowing, apnoea, cyanosis and cardiorespiratory arrest may ensue within minutes of ingestion. Oxygen gas embolism may produce multiple cerebral infarctions. Although most inhalational exposures cause little more than coughing and transient dyspnoea, inhalation of highly concentrated solutions of hydrogen peroxide can cause severe irritation and inflammation of mucous membranes, with coughing and dyspnoea. Shock, coma and convulsions may ensue and pulmonary oedema may occur up to 24-72 hours post exposure. Severe toxicity has resulted from the use of hydrogen peroxide solutions to irrigate wounds within closed body cavities or under pressure as oxygen gas embolism has resulted. Inflammation, blistering and severe skin damage may follow dermal contact. Ocular exposure to 3% solutions may cause immediate stinging, irritation, lacrimation and blurred vision, but severe injury is unlikely. Exposure to more concentrated hydrogen peroxide solutions (>10%) may result in ulceration or perforation of the cornea. Gut decontamination is not indicated following ingestion, due to the rapid decomposition of hydrogen peroxide by catalase to oxygen and water. If gastric distension is painful, a gastric tube should be passed to release gas. Early aggressive airway management is critical in patients who have ingested concentrated hydrogen peroxide, as respiratory failure and arrest appear to be the proximate cause of death. Endoscopy should be considered if there is persistent vomiting, haematemesis, significant oral burns, severe abdominal pain, dysphagia or stridor. Corticosteroids in high dosage have been recommended if laryngeal and pulmonary oedema supervene, but their value is unproven. Endotracheal intubation, or rarely, tracheostomy may be required for life-threatening laryngeal oedema. Contaminated skin should be washed with copious amounts of water. Skin lesions should be treated as thermal burns; surgery may be required for deep burns. In the case of eye exposure, the affected eye(s) shod eye(s) should be irrigated immediately and thoroughly with water or 0.9% saline for at least 10-15 minutes. Instillation of a local anaesthetic may reduce discomfort and assist more thorough decontamination.
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PMID:Hydrogen peroxide poisoning. 1529 93

Diaphragmatic rupture during labor is uncommon and generally occurs in patients with a history of congenital diaphragmatic hernia or traumatic abdominal or chest injury. We present a case of a 41-year-old woman who presented with abdominal pain, vomiting and hypoventilation four days after a full-term home delivery. Chest radiography suggested the presence of a ruptured diaphragm, and laparotomy revealed a congenital left Bochdalek defect with herniation of the stomach, transverse colon and spleen into the left pleural cavity. Diaphragmatic hernia rupture during labor is a serious but rare complication that requires emergency surgery to prevent visceral perforation and cardio-respiratory failure.
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PMID:Diaphragmatic rupture during labor. 1547 63

Chlorophenoxy herbicides are used widely for the control of broad-leaved weeds. They exhibit a variety of mechanisms of toxicity including dose-dependent cell membrane damage, uncoupling of oxidative phosphorylation and disruption of acetylcoenzyme A metabolism. Following ingestion, vomiting, abdominal pain, diarrhoea and, occasionally, gastrointestinal haemorrhage are early effects. Hypotension, which is common, is due predominantly to intravascular volume loss, although vasodilation and direct myocardial toxicity may also contribute. Coma, hypertonia, hyperreflexia, ataxia, nystagmus, miosis, hallucinations, convulsions, fasciculation and paralysis may then ensue. Hypoventilation is commonly secondary to CNS depression, but respiratory muscle weakness is a factor in the development of respiratory failure in some patients. Myopathic symptoms including limb muscle weakness, loss of tendon reflexes, myotonia and increased creatine kinase activity have been observed. Metabolic acidosis, rhabdomyolysis, renal failure, increased aminotransferase activities, pyrexia and hyperventilation have been reported. Substantial dermal exposure to 2,4-dichlorophenoxy acetic acid (2,4-D) has led occasionally to systemic features including mild gastrointestinal irritation and progressive mixed sensorimotor peripheral neuropathy. Mild, transient gastrointestinal and peripheral neuromuscular symptoms have occurred after occupational inhalation exposure. In addition to supportive care, urine alkalinization with high-flow urine output will enhance herbicide elimination and should be considered in all seriously poisoned patients. Haemodialysis produces similar herbicide clearances to urine alkalinization without the need for urine pH manipulation and the administration of substantial amounts of intravenous fluid in an already compromised patient.
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PMID:Poisoning due to chlorophenoxy herbicides. 1557 61

A retrospective study was carried out to evaluate the clinical course and outcome of disseminated strongyloidiasis treated in a regional hospital in Hong Kong over a 10-year period. Seven cases were identified, and the case history of each patient was analysed. The most common presenting symptom was fever (100%). Five (71%) patients had gastrointestinal symptoms, the most common being abdominal pain and diarrhoea. Three (42%) patients had a significant drop in haemoglobin. Six (85%) patients had bronchoalveolar infiltrates on chest radiographs. Most patients were immunosuppressed by means of steroid treatment for their underlying primary disease. One patient was diabetic, and another had lymphoma and was receiving chemotherapy. Strongyloides larvae were identified in stool specimens in two patients, in sputum smears in two patients, and in gastric biopsies in three patients. Five (71%) of the patients with lung involvement progressed to respiratory failure and died. Two (29%) cases were complicated by gram-negative bacterial infection. No patient had eosinophilia on presentation. All patients received antihelminthic treatment of variable duration. The case fatality rate in the cohort was 71% despite aggressive supportive therapy. Pulmonary and bowel symptoms were prominent in our series. In conclusion, the diagnosis of disseminated strongyloidiasis is often delayed because of nonspecific presenting symptoms. Early diagnosis relies on a high index of clinical suspicion, especially in immunocompromised hosts. Screening for Strongyloides infection before the initiation of immunosuppressive therapy should be considered, especially in endemic areas.
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PMID:Disseminated strongyloidiasis: a retrospective study of clinical course and outcome. 1641 32

Lymphangioleiomyomatosis (LAM) is a rare progressive disease of unknown etiology that typically affects women of childbearing age. It is characterized by an abnormal proliferation of smooth muscle cells causing gradual obstruction of small airways, frequently resulting in respiratory failure and death. While LAM is predominantly a lung disorder, we report a case of retroperitoneal LAM in a patient who had no evidence of pulmonary involvement. A 59-year-old female presented with postmenopausal bleeding and no other complaints. She was found to have a low attenuation retroperitoneal mass on abdominal and pelvic computed tomography (CT) scan suspicious for lymphoma. CT-guided biopsy was nondiagnostic. Laparoscopic resection of some of the enlarged retroperitoneal lymph nodes confirmed the diagnosis of LAM. This case is an atypical presentation of LAM. The disease typically presents in premenopausal women, with the initial site of involvement being the lungs and mediastinum. In rare cases, such as this of extrapulmonary LAM, patients typically present with a palpable abdominal mass, abdominal pain, or chylous ascites. As in our case, radiographic findings can mimic malignancies such as lymphoma. Laparoscopic lymph node biopsy is a valuable tool in these situations of diagnostic dilemma.
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PMID:Primary retroperitoneal lymphangioleiomyomatosis in a postmenopausal woman: a case report and review of the literature. 1736 25

We describe a 60-year-old male patient with acute intermittent porphyria (AIP) who presented with initial abdominal pain and subsequent quadriplegia and respiratory failure. Small fiber neuropathy was demonstrated by measuring intra-epidermal nerve fiber density (IENFD) using protein gene product 9.5 (PGP 9.5) immunostaining on three consecutive skin punch biopsies of the distal lower limb. The biopsy findings demonstrated some correlation with progression of the patient's clinical condition. Neuropathy in AIP can have a small-fiber component rather than being solely a large-fiber neuropathy.
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PMID:Acute intermittent porphyria with peripheral neuropathy complicated by small-fiber neuropathy. 1749 14

Here we report a case of leptospirosis without fever during the late stage of pregnancy in which the initial clinical presentation was more suggestive of a pregnancy-related liver dysfunction rather than an infectious disease. A 32-year-old primipara at 37 week of gestation was hospitalised with a 10-day history of nausea, vomiting, and abdominal pain without fever. Initial routine blood tests showed hyperbilirubinemia, a moderate increase in transaminase levels, severe coagulopathy and an increased creatinine level. On clinical suspicion of pregnancy-related liver dysfunction such as HELLP syndrome (hemolysis, elevated liver enzyme levels, low platelet count) or acute fatty liver of pregnancy (AFLP), emergency caesarean section was performed and a healthy baby was delivered. Postoperatively, the patient was stable, but 5 days later she developed clouding of consciousness, severe jaundice and respiratory failure. At this time, an infectious disease was considered and leptospirosis was confirmed by serological tests. In conjunction with intensive care management, antibiotic therapy was given; the patient was discharged in good condition and her baby did not develop signs of active leptospirosis. While leptospirosis is rare in pregnancy, this is the first report of acute infection without fever mimicking the clinical pattern of HELLP syndrome or AFLP
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PMID:Unusual presentation of leptospirosis in the late stage of pregnancy. 1763 89

A 53-year-old male was admitted with a two-day history of abdominal pain, anal bleeding, fever, diarrhea, vomiting, and mental confusion. A diagnosis of thrombosis of very large hemorrhoids (Grade 4) was made. On the day of admission, he underwent an exploring laparotomy followed by abdominoperineal resection. The peritoneal cavity was filled with pus and blood clots. Because rectal necrosis was involved, sigmoid colostomy was imperative. Twenty-eight hours after surgery, the patient demonstrated signs of soft-tissue perineal necrosis associated with progressive pain and fever. He developed a rapidly progressive gangrene of the lower limbs and scrotum followed by acute renal and respiratory failure, and he died of sepsis. At autopsy, the cadaver showed jaundice and a large gangrene of the perineum and lower limbs. The internal organs showed features secondary to sepsis complications. To the best of our knowledge, this is the first autopsy study of a patient who died because of complications of hemorrhoids.
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PMID:Death resulting from fournier gangrene secondary to thrombosis of very large hemorrhoids: report of a case. 1784 38

An obese body habitus may interfere with diagnosis of potentially life-threatening conditions. This report describes an obese woman who presented with acute hypoxemic respiratory failure and diffuse infiltrates. Her body habitus disguised her parturient abdomen and she could not provide a history because she was intubated and paralysed. Only after a urine pregnancy test was undertaken did it become apparent that she was pregnant and the diagnosis of pre-eclampsia with pulmonary oedema was considered. Urine pregnancy tests are part of the standard work-up for abdominal pain in women of childbearing age, but are not viewed as part of the work-up for respiratory distress or diffuse radiographic infiltrates. This case illustrates the value of obtaining a pregnancy test in all women, particularly those with obese body habitus, who present with respiratory failure of unclear aetiology.
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PMID:Unsuspected 34-week pregnancy presenting as acute hypoxaemic respiratory failure. 1802 28

Pain abdomen is one of the most commonly encountered complaints in pediatric emergency room. We report a seven-year-old resident of Delhi, who presented with sudden onset abdominal pain for three hours, and later went on to develop neuro-muscular paralysis and respiratory failure. The cause was found to be snake-bite. The child had a stormy course and full recovery.
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PMID:Snake bite: an unusual cause of acute abdominal pain. 1805 83


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