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

A 6-year-old boy was admitted with anasarca due to relapse of nephrotic syndrome, non-productive cough, and dyspnea on exertion. On the 8th hospital day he manifested severe right shoulder and chest pain. A nodular opacity in the right lung that transformed into a cavitating lesion was documented by computerized axial tomography. Surgical biopsy of the affected area of the lung documented infarction due to pulmonary embolism. This case highlights the need to consider pulmonary embolism in the evaluation of nephrotic children with a cavitating pulmonary lesion.
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PMID:Cavitating pulmonary infarction in nephrotic syndrome. 791 65

Our experience with 18 cases of isolated right ventricular infarction is reported and the literature is reviewed. Chronic lung disease with right ventricular hypertrophy is an important risk factor. Chest pain is the usual symptom at presentation but some cases can have breathlessness, palpitations or syncope. Some cases can have sinus bradycardia, atrial fibrillation or ventricular tachycardia. Atrioventricular block is rare. Cases with pulmonary artery hypertension, extensive right ventricular infarction due to proximal occlusion of the right coronary artery, right atrial infarction or atrial fibrillation can have hypotension and/or systemic venous congestion. A surface electrocardiogram mainly showing changes in leads conventionally considered to represent left ventricle and right-sided chest leads may not show an infarct pattern in some cases. Echocardiography is, therefore, more reliable in diagnosing this condition. The cautious use of small doses of nitrates and diuretics is not hazardous in the absence of hypotension. High doses of steroids and anti-coagulants can be helpful. The prognosis is usually good, although sudden collapse can occur due to ventricular fibrillation, rupture of the right ventricular free wall or a massive pulmonary embolism.
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PMID:Isolated right ventricular infarction. 796 Feb 76

We report a case of a postpartum female on oral contraceptives who presented with chest pain and was initially treated for pulmonary embolism on the basis of a lobar mismatch on ventilation-perfusion imaging. Subsequent angiography revealed that the pulmonary artery was extrinsically compressed. Gallium-67-citrate imaging documented sarcoidosis with uptake in bilateral hilar nodes, both lungs and parotid and salivary glands.
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PMID:Ventilation-perfusion imaging in sarcoidosis: potential for nonembolic segmental mismatch. 811 2

The diagnosis of pulmonary embolism remains enigmatic. Points to look for are: (1) Ninety percent or more of patients with pulmonary embolism have known predisposing factors. (2) Eighty percent or more complain of dyspnea and exhibit hyperpnea (eg, respiratory rate > 20 breaths per minute). (3) Chest roentgenogram abnormalities occur in more than 80% of patients. (4) Seventy percent to 90% of patients complain of chest pain. (5) Either the pCO2 is low or the alveolar-arterial oxygen gradient is high in more than 95% of cases. (6) Twenty percent of patients have normal pO2. (7) Anxiety is present more often than not, and, if present, is no reason to dismiss the cause as "hyperventilation syndrome." Pulmonary arteriography is the "gold standard" for diagnosis, although the combination of ventilation/perfusion scan and noninvasive leg vein studies may decrease its use. An experimental test, the immunosorbent plasma D-dimer assay, seems a promising future screening tool if its reportedly high sensitivity is confirmed. Transthoracic or esophageal echocardiology, if immediately available, may have a place in assessing patients who present with cardiovascular collapse. Early and adequate heparinization coupled with the use of intravenous heparin protocols should lower future mortality rates. Food and Drug Administration approval of low-molecular-weight heparin and heparinoids may revolutionize the management of routine thromboembolism, as these substances are easier to use and less hazardous. A recent British study showed no advantage to anticoagulation beyond 4 weeks for patients with perioperative thrombophlebitis and no other risk factors. In selected cases, thrombolytic therapy, vena caval filters, and invasive embolectomy have been shown to decrease both short- and long-term mortality.
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PMID:Recent developments in the diagnosis, treatment, and prevention of pulmonary embolism. 811 86

We studied 196 patients with suspicion of pulmonary embolism (PE) to evaluate the role of clinical pattern, with special reference to gender and age, in raising the suspicion. Results are that clinical and instrumental patterns, although not specific for PE, may show highly frequent symptoms and signs such as dyspnea (52%), chest pain (60%), enlargement of descending pulmonary artery (49%), diaphragmatic elevation (41%), enlargement of azygos vein (46%) and hypoxia (mean value 68 +/- 13 mm Hg) that allow to suspect PE in most patients and, therefore, to recruit more patients for diagnosis. Moreover, this study shows that gender and age may only partially influence the possibility of raising the suspicion of PE. Indeed, only hemoptysis is significantly (p < 0.02) more frequent in males; only pleuritic chest pain is significantly (p < 0.02) more frequent in youngs; few instrumental findings, such as 'sausage-like' descending pulmonary artery (p < 0.001), enlargement of cardiac shadow (p < 0.01), and hypoxia (p > 0.03) are significantly more frequent in elderly patients. Finally, a characteristic clinical and instrumental pattern of PE may allow to select a subset of patients at higher risk; in fact, previous PE, prolonged immobilization (p < 0.01) and thrombophlebitis (p < 0.001), sudden dyspnea and cough (p < 0.05), 'sausage-like' descending pulmonary artery (p < 0.001), diaphragm elevation (p < 0.02), enlargement of heart shadow, pulmonary infarction and Westermark sign (p < 0.001), S-T segment depression (p < 0.001), and hypoxia (p < 0.001) are findings significantly more frequent in patients with confirmed PE.
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PMID:Gender, age and clinical signs in patients suspected of pulmonary embolism. 817 65

A 73-year-old man presented to our hospital complaining of dysuria and nocturia. The examination revealed prostatic cancer. Metastatic cancer was not revealed by the examination. He underwent total prostatectomy and iliac lymphadenectomy. Pathological examination of the surgical specimen revealed moderately differentiated adenocarcinoma of the prostate with right iliac lymph node metastasis. On the 33rd postoperative day, he suddenly developed chest pain, dyspnea, tachycardia, and tachypnea. Arterial PO2 was 62 mmHg, and chest X-ray showed right ventricular hypertrophy. Pulmonary perfusion scan revealed multiple cold areas throughout both lung fields. The diagnosis was pulmonary embolism and anti-coagulant therapy was immediately successful in resolving his symptoms. We suggest that pulmonary embolism should be considered as one of the postoperative complications of urological operations.
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PMID:[A case of pulmonary embolism following total prostatectomy]. 817 46

We report the use of centrally administered tissue-type plasminogen activator for three patients who presented with massive pulmonary embolism to the emergency department. In all patients, rapid improvement of pulmonary arterial pressures ensued by the end of the drug infusion, while the presenting symptoms of chest pain and shortness of breath subsided.
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PMID:Treatment of massive pulmonary embolism with centrally administered tissue-type plasminogen activator. 833 42

To contribute for making early diagnosis and treatment of acute pulmonary embolism (APE), we investigated on clinical pictures of 225 patients with APE. Common underlying factors were heart disease, prolonged bed rest, post-surgical state, thrombophlebitis, malignant tumor and post-catheterization state in this order. Dyspnea, chest pain, tachycardia and shock were frequently seen as initial symptoms and signs. Blood screening showed leukocytosis, hypoxemia, hypocapnia and elevated serum LDH. Electrocardiographic findings highly demonstrated were ST.T abnormalities, such as T inversion with ST elevation in V1-3, ST depression in V4-6 and sinus tachycardia. Chest X-rays showed diminished pulmonary vascular marking and pulmonary artery dilation. Right ventricular dilatation were frequently seen on 2-dimensional echocardiograms. Pulmonary artery pressure were elevated up to 49/20 (30) mmHg. Twenty-five percent of the patients died, and the recurrence was seen in 4%. Thus, as soon as APE is suspected by above clinical findings, definitive diagnosis should be obtained by the lung perfusion scan and pulmonary arteriography, then oxygen and thrombolytic agents should be given immediately to prevent the fatal outcome.
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PMID:[Early diagnosis and management of acute pulmonary embolism: clinical evaluation those of 225 cases]. 835 37

The subject of this report is a 57-year-old obese, hypertensive woman who had been well until the onset of severe chest pain and hypotension. She had to be defibrillated four times on her way to the hospital. The diagnosis of acute inferior-posterior infarction was made by electrocardiogram (ECG) and there was a markedly elevated serum creatine kinase (CK) (including the MB fraction). The patient had a very low cardiac output and ejection fraction. A lung scan revealed possible pulmonary embolism for which she was anticoagulated. She remained hypotensive and hypoxemic and, on Day 17 of her hospital stay, she had a bout of severe dyspnea. A new systolic murmur was heard and the clinical diagnosis of ruptured papillary muscle was made and confirmed by echocardiography, and later at autopsy. All three coronary arteries were severely atherosclerotic and, in addition, the right coronary artery was completely closed by a thrombus. This case clearly illustrates the major pathological changes in the heart that correlate with the clinical findings in patients with a myocardial infarct that is complicated by left ventricular papillary muscle rupture. The pathophysiological effects of this condition, as illustrated in this case report, include the following:1. The posterior papillary muscle wa s almost completely separated from its base, with only a thin strip of muscle intact. The mistral valve thus was insufficient (a "flail valve''); this markedly reduced the ejection fraction of the left ventricle, increased its end-diastolic volume and pressure, produced a damming of blood in the pulmonary circulation, and this resulted in the pulmonary edema seen on the chest x-ray.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Acute myocardial infarction with papillary muscle rupture. 841 63

A 57-year-old man without prior history of organic heart disease was admitted with a diagnosis of unstable angina because of chest pain and new electrocardiographic (ECG) changes of global T wave inversion and QT interval prolongation. Left and right heart catheterization with coronary angiography, pulmonary angiography, ventilation-perfusion scintigraphy, and echocardiography showed absence of coronary artery disease but unequivocally acute pulmonary embolism. Within days following anticoagulant therapy, the lengthened QT interval became normalized while the global T wave inversion persisted. A follow-up ECG 15 months later revealed complete resolution of the T wave inversion. The possible pathophysiologic mechanism of the ECG changes is discussed.
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PMID:Acute pulmonary embolism as the cause of global T wave inversion and QT prolongation. A case report. 822 24


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