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Query: UMLS:C0034065 (pulmonary embolism)
 14,979 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In 13,700 patients who received one or more lumbar disc injections of chymopapain, 401 complications, adverse reactions, and delayed untoward events were recorded, including eight deaths. The deaths were secondary to anaphylaxis, pulmonary embolism, discitis with subacute bacterial endocarditis, ruptured abdominal aortic aneurysms (two patients), encephalitis (of unknown etiology), and myocardial infarction. Of these, the deaths secondary to anaphylaxis and discitis with subacute bacterial endocarditis can be attributed directly to the procedure of chemonucleolysis.
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PMID:Complications of chemonucleolysis for lumbar disc disease. 61 47

Dextran was introduced as early as 1944 as a plasma substitute. Since 1962 dextran has also proved to be effective as a prophylactic agent against postoperative thrombo-embolism. In general surgery low-dose heparin (LDH) is more effective in preventing isotopic deep-vein thrombosis diagnosed by the radioactive fibrinogen test, but in orthopaedic surgery dextran is superior to heparin. Dextran seems equally effective as LDH in preventing fatal pulmonary embolism both in general and orthopaedic surgery. In routine surgery, infusion of 500-1,000 ml of dextran will replace the first blood loss of 500-800 ml without risk of transmitting diseases. Simultaneously thrombo-embolic prophylaxis will be achieved with a decreased risk of haemorrhagic complications than is seen with heparin prophylaxis. The risk for severe anaphylaxis to dextran is minimal today (approx. 1 case in every 40,000 treated patients) thanks to hapten inhibition.
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PMID:The antithrombotic efficacy of dextran. 246 Oct 16

Over the January 1, 1979 to March 31, 1980 period sterilization-attributable deaths were identified in Dacca and Rajshahi Divisions, Bangladesh. These deaths were identified primarily through government records of compensation to families of deceased sterilization patients. This list was augmented by deaths reported from clinics of the Bangladesh Association for Voluntary Sterilization, detected through a prospective study of sterilization in Bangladesh, and identified by interviews with government family planning officials. A sterilization-associated death was defined as the death of a patient from any cause occurring within 42 days of tubal ligation or vasectomy. Death-to-case rates for vasectomy and tubal ligation were calculated for each month with 95% confidence intervals based on the Poisson distribution. 31 sterilization-associated deaths were identified over the study period. 28 of these were sterilization attributable and 3 were not. The mean age of the 21 women was 30.6 years, and their mean parity was 4.8. The mean age of the 7 vasectomy patients was 37.0 years. Abdominal Pomeroy method of tubal ligation was the only female sterilization technique used. 2 temporal clusters of sterilization attributable deaths occurred during the study. The 1st was a cluster of 5 deaths from tubal ligation performed in June 1979. 3 of these operations took place on June 5, 1979 but in different facilities. 1 factor common to each of these operations was the unseasonably hot weather. The 2nd temporal cluster consisted of 3 deaths after vasectomy in July 1979. 2 men from the same village died from scrotal infections after vasectomy on July 19, 1979 by the same surgeon at a single clinic. A similar death occurred earlier the same month. Another patient of the same surgeon and clinic associated with the deaths after operation on July 19 died from scrotal infection in January 1980. 3 vasectomy deaths related to 1 surgeon in a single remote facility suggests a breach of sterile technique. This could not be confirmed as this clinic physician could not be interviewed. The death-to-case rate for all procedures combined was 21.3 deaths/100,000 procedures, with the rate for vasectomy 1.6 times higher than that for tubal ligation. Anesthesia overdosage was the leading cause of death attributed to tubal ligation with tetanus (24%), intraperitoneal hemorrhage (14%), and infection other than tetanus (5%) as other leading causes. 2 patients (10%) died from pulmonary embolism after tubal ligation; 1 (5%) died from each of the following: anaphylaxis from anti-tetanus serum, heat stroke, small bowel obstruction, and aspiration of vomitus. All 7 men died from scrotal infections after vasectomy. Improvement in anesthesia management and sterile technique can lower the death-to-case rate for contraceptive sterilization in 2 Divisions of Bangladesh.
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PMID:Sterilization-attributable deaths in bangladesh. 612 37

Although rare, exertional collapse and sudden death are the most serious potential complications of sickle cell trait. Studies suggest that this condition may occur in susceptible persons when poor physical conditioning, dehydration, heat stress or hypoxic states precipitate sickling of the abnormal erythrocytes. Sickling leads to endothelial damage, which can cause vasoconstriction, disseminated intravascular coagulation and local tissue damage. Cardiac effects include acute ischemia and arrhythmias. Muscle damage results in acute compartment syndromes and release of myoglobin into the circulation. Acute renal failure is possible. Diagnosis is based on a high index of suspicion, and characteristic presentation and laboratory findings, including myoglobinuria, hyperkalemia, hypocalcemia, hyperphosphatemia and elevated creatine kinase levels. The differential diagnosis includes pulmonary embolism, acute cardiac events, anaphylaxis and heat stroke. Management is based on stabilization, rehydration, and the treatment and prevention of complications.
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PMID:Exertional collapse and sudden death associated with sickle cell trait. 904 99

A 41-year old primigravida underwent caesarean section because of foetal distress following prostin induction of labour. Intraoperative coagulopathy, haemorrhage and hypotension necessitated a hysterectomy. Subsequently, she developed respiratory and renal failure, requiring mechanical ventilation and haemodialysis. She made a full recovery. The likely diagnosis was amniotic fluid embolism (AFE), a rare complication of pregnancy with a variable presentation, ranging from cardiac arrest and death through to mild degrees of organ system dysfunction with or without coagulopathy. The differential diagnosis includes pre-eclamptic toxaemia/pregnancy-induced hypertension, anaphylaxis and pulmonary embolism. There is no diagnostic test for AFE; the finding of foetal elements in the maternal circulation is non-specific. Historically, AFE was thought to induce cardiovascular collapse by mechanical obstruction of the pulmonary circulation. It is now thought that a combination of left ventricular dysfunction and acute lung injury occur, with activation of several of the clotting factors. An immunological basis for these effects is postulated. There is no specific therapy and treatment is supportive. The mortality of the condition remains high.
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PMID:Amniotic fluid embolism: a case report and review. 1069 74

A 35-years old gravida IV and para II underwent caesarean section because of fetal distress following induction of labour. During operation the patient developed disseminated intravascular coagulation (DIC), severe haemorrhage and shock necessitating massive blood transfusion,hysterectomy with pelvic packing, and high-dose catecholamines. Ultimately, recombinant factor VIIa was given to control bleeding. During the first 24 hours after operation, both clinical and laboratory findings showed that the severe DIC was on the course to recovery.However, the patient subsequently developed multiple organ dysfunction syndrome with respiratory and renal failure requiring mechanical ventilation and haemodialysis.All therapeutical efforts could not help that the patient passed away due to an inevitable multiple organ failure on the 12th day after the operation. Given the constellation of diagnostic and clinical findings, the most likely diagnosis was amniotic fluid embolism (AFE), a rare complication of pregnancy. The following differential diagnoses were less likely or excluded in this reported patient: pre-eclampsia/pregnancy-induced hypertension,HELLP syndrome,anaphylaxis,uterine rupture, transfusion reactions,pulmonary embolism. AFE occurs rarely, and because studies in animal models cannot reproduce accurately the pathophysiological and clinical alterations seen in humans, its pathogenesis remains unclear. It has been proposed that the clinical syndrome of AFE occurs when fetal antigens pass the maternal immunological barrier in susceptible mothers. The recognition of fetal antigens by maternal immune system subsequently triggers the release of endogenous mediators that are responsible for dramatic pathophysiological disturbances.Furthermore, the components of amniotic fluid initiate the DIC. These events are more consistent with septic shock and anaphylactic shock than with an embolic process and it was proposed that the term "amniotic fluid embolism" be changed to "anaphylactoid syndrome of pregnancy". At present, no therapy has been found to consistently improve outcomes in women with AFE.Patients who survive the initial insult are at high risk for multiple organ failure. The mortality of AFE remains high.
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PMID:[Pathophysiological and therapeutic aspects of amniotic fluid embolism (anaphylactoid syndrome of pregnancy): case report with lethal outcome and overview]. 1275 Aug 26

Due to the growing number of high-risk patients, the increasing proportion of geriatric patients and the expansion of surgical and invasive-diagnostic procedures, medical stuff in hospitals are confronted with a rising number of emergency situations. Nearly 50% are of cardio-circulatory origin and occur during surgical interventions or immediately afterwards. Another cause of life-threatening complications are side-effects of orally or intravenously administered agents, especially after treatment with antibiotics, anaesthetics, analgetics and sedatives. Due to a lack of emergency training and management in most hospitals, the survival rate after cardiopulmonary resuscitation in general wards lies between just two and 35%. Thus it seems necessary to perform special training in CPR procedures and emergency management at regular intervals for the entire medical stuff. In addition, a special infrastructure for giving sufficient treatment in emergencies has to be established (emergency team, emergency telephone number, intra-hospital emergency car). The second part of this review presents current diagnostic and therapeutic strategies for the most common emergency situations, e.g. anaphylaxis, myocardial infarction, pulmonary embolism, gastrointestinal bleeding, and heparin-induced thrombocytopenia (HIT).
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PMID:[Treatment of emergencies in the hospital--problems and management]. 1275 63

Bronchial asthma remains a significant cause of mortality at all ages, despite the increased understanding of its pathogenesis and the range of drugs available for its treatment. Changes in therapeutic management can influence death rates and constant surveillance, combined with high-quality post mortem investigations, is essential. Disease severity, poor disease management and adverse psychosocial circumstances are all risk factors for asthma mortality. Bronchial asthma causes characteristic histological changes in the mucosa of the airways which are present even before the clinical diagnosis of asthma can be made. These include fibrous thickening of the lamina reticularis of the epithelial basement membrane, smooth muscle hypertrophy and hyperplasia, increased mucosal vascularity and an eosinophil-rich inflammatory cell infiltrate. In addition, mucoid plugging of the airway lumen is frequently associated with fatal asthma. The recognition of these changes can allow the diagnosis of asthma to be made for the first time at autopsy, in those cases where asthma goes undiagnosed in life. Acute severe asthma may be accompanied by pneumothorax and surgical emphysema of the mediastinum. Disorders which may mimic asthma include pulmonary embolism, chronic obstructive pulmonary disease and anaphylaxis, but careful post mortem examination and appropriate investigations should reveal the true cause of death.
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PMID:Asthma deaths; persistent and preventable mortality. 1287 25

Shock is a final common pathway associated with regularly encountered emergencies including myocardial infarction, microbial sepsis, pulmonary embolism, significant trauma, and anaphylaxis. Shock results in impaired tissue perfusion, cellular hypoxia, and metabolic derangements that cause cellular injury. The clinical manifestations and prognosis of shock are largely dependent on the etiology and duration of insult. It is important that emergency physicians, familiar with the broad differential diagnosis of shock, be prepared to rapidly recognize, resuscitate, and target appropriate therapies aimed at correcting the underlying process. This article focuses on the basic pathophysiology of shock states and reviews the rationale regarding vasoactive drug therapy for cardiovascular support of shock within an emergency environment.
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PMID:The use of vasopressors and inotropes in the emergency medical treatment of shock. 1865 44

The most important causes of acute collapse in pregnancy are pulmonary embolism, amniotic fluid embolism, acute coronary syndrome, thrombosed mechanical prosthetic heart valves, acute aortic dissection, cerebrovascular incidents and anaesthetic complications like failed intubation, anaphylaxis, and problems relating to regional or local anaesthetic agents. The management is based on supporting the different organ systems that are affected. The diagnosis of pulmonary embolism is based on a clinical suspicion supported by certain diagnostic test. Tests like D-dimers have their limitations and cannot be used alone to exclude the diagnosis especially when there is a high clinical suspicion. The choice of the best diagnostic tool is based upon weighing long-term risks to both mother and foetus on the one side and delaying the diagnosis on the other side. The management of acute coronary syndrome is based on immediate angiography and percutaneous coronary intervention. Although there are reports of the use of clopidrogel in pregnancy, there are few data on its effect on the foetus. There is no clinical evidence for fibrinolytic therapy as a reperfusion strategy in pregnancy and it is best avoided as the risk of haemorrhage outweighs the possible benefit of treatment. Patients with a prosthetic heart valve that present with a disappearance of the prosthetic heart sounds or a new murmur should get an urgent cardiac ultrasound to rule out a thrombosed prosthetic valve. Anaesthesia-related causes are an increasing cause of maternal morbidity and mortality.
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PMID:Managing acute collapse in pregnant women. 1923 Jul 79


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