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

In 132 consecutive patients treated for pulmonary embolism, duration of symptoms, number of embolic episodes before the diagnosis, circulatory affection (stable circulation (n = 61), reversible shock (n = 60), circulatory collapse (n = 11), electrocardiographic findings and systolic pulmonary pressure (n = 60) were analysed in relation to 1) underlying diseases (orthopedic surgical patients (n = 43), gynecological-abdominal surgical patients (n = 22), preembolic healthy patients (n = 42), miscellaneous medical patients (n = 25)), and 2) the obstruction of the pulmonary vascular bed quantified by a scintigraphic or angiographic score. While embolic score did not differ between the groups of underlying diseases, preembolic healthy patients with deep vein trombosis (n = 30) had longer mean duration of symptoms (14 days), more embolic episodes, (1.7 episode) and higher pulmonary pressure (72 mmHg) than the material on an average with values of 7 days, 0.9 episodes and 57 mmHg, respectively (p less than 0.001). Among patients with reversible shock or circulatory collapse, half had at least one previous embolic episode, one fifth from two to four. Embolic score correlated well with the circulatory affection (p less than 0.001). A high pulmonary pressure correlated with long duration of symptoms and a high number of embolic episodes (p less than 0.002). Sinus tachycardia and electrocardiographic signs of acute right ventricular strain (complete and incomplete right bundle branch block, SIQIIITIII-pattern and inverted T-waves in V2-4) correlated positively to the circulatory affection and inversely to duration of symptoms and number of embolic episodes (p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Clinical picture of acute pulmonary embolism. Relations to the degree of vascular obstruction]. 150 68

In contrast to pulmonary parenchyma metastases or lymphangitic carcinomatosis, neoplastic emboli of small pulmonary arteries and capillaries frequently go unrecognized and are only discovered at autopsy. Five patients (48 +/- 12 years old) were admitted to 3 intensive care units for severe acute respiratory failure and died between the first and the tenth day following hospitalization. Each patient had a history of rapidly progressive dyspnea, and physical examination showed clinical evidence of right ventricular failure. The lungs were clear on chest X-rays and the ECG revealed sinus tachycardia with a right QRS axis. The mean partial pressures of oxygen (PaO2) and carbon dioxide (PaCO2) were, respectively, 50.8 +/- 9.1 mm Hg and 22.2 +/- 2.4 mm Hg. A swan-Ganz catheter, inserted into 4 patients, revealed pulmonary arterial hypertension (55, 43, 37, 28) with capillary wedge pressure within the normal limits and cardiac output normal or low (3.0, 3.8, 4.4, 5.0 l/min). Pulmonary angiograms from each patient showed decreased distal lung perfusion without any proximal defects suggestive of pulmonary embolism. The inferior vena cava always appeared clear. Malignant cells were found upon autopsy (4 cases) in the lumina of the pulmonary arterioles and the primary site of the cancer was determined in 3 patients (2 hepatomas and 1 pancreatic carcinoma). The last patient had a known breast cancer with bone marrow metastases and clinical, hemodynamic and angiographic evidence of neoplastic emboli. The clinical course of neoplastic emboli can suggest acute pulmonary embolism, but the diagnosis can only be advanced after pulmonary angiography, especially if the patient is to have a cancer.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Acute respiratory distress caused by distal neoplastic pulmonary emboli]. 209 8

One or several syncopes were the reason for hospitalization in 31 of 155 in-patients with proven pulmonary embolism. In all of them there were at least two further pointers to acute pulmonary embolism: all had tachypnoea, 28 had dyspnoea, 25 had sinus tachycardia (more than 100 beats/min), 24 had congested neck veins and 16 had deep leg-vein thrombosis. In 21 patients the ECG had signs of right heart strain, in 15 of 20 in whom it was measured the arterial oxygen partial pressure was below 70 mm Hg. In 23 patients the chest X-ray was largely unremarkable despite dyspnoea. In 23 patients there had been a massive embolus and 16 patients had died. Although syncope is only rarely caused by pulmonary embolism, its ominous significance in this connection should stimulate a search for further diagnostic pointers to such an occurrence.
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PMID:[Syncope as a misinterpreted leading symptom of pulmonary embolism]. 394 10

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 clinical and laboratory features in 62 patients with acute pulmonary embolism were analized. There were 26 males, and 36 females with mean age of 63 +/- 11 (range 37 to 90). The clinical symptoms include: dyspnea (92%), chest pain and/or chest tightness (65%), cough (50%), wheezing (29%), leg swelling (32%), hemoptysis (24%), syncope (18%), leg pain (10%). Clinical signs include: tachypnea (respiratory rate > or = 20 per minute) (79%), tachycardia (37%), deep vein thrombosis (29%), cyanosis (8%), fever (> 38.5 degrees C) (2%). The possible predisposing factors include: immobilization (18%), surgery (5%), deep vein thrombosis, ever(5%), malignancy (5%), pulmonary embolism, ever (3%). Arterial blood gas analysis (while patients breathed room air) revealed mean PH of 7.46 +/- 0.06, mean PO2 of 64.5 +/- 12.1 mmHg, mean PCO2 of 35.3 +/- 4.6 mmHg, mean Alveolar-arterial O2 difference of 36.5 +/- 16.6 mmHg. The electrocardiographic changes include; nonspecific ST-T change (61%), sinus tachycardia (20%), S1Q2T3 pattern (15%), atrial fibrillation (16%), incomplete right bundle branch block (10%), complete right bundle branch block (8%), atrial premature contraction (7%), paroxysmal supraventricular tachycardia (2%). The chest x-ray findings include: cardiomegaly (48%), regional hypovascularity (31%), atelectasis (5%), pleural effusion (5%), wedge-shaped infiltrate (3%), elevated diaphragm (6%). Venous plethysmography was performed in 49 of 62 patients. Of these 49 patients, 28 patients revealed positive finding. Of these 28 patients with positive finding, 18 patients had clinical evidence of deep venous thrombosis. The in-hospital mortality rate was 10% (6/62).
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PMID:[Pulmonary embolism: clinical and laboratory features in 62 patients]. 904 62

A 61-year-old woman was transferred to our hospital because of palpitation, tachypnea and repeated syncopal attack. On admission, sinus tachycardia and hypoxia were noted without deterioration of consciousness. The diagnosis of pulmonary embolism was made by pulmonary angiography and right heart catheterization showing multiple pulmonary emboli and pulmonary hypertension. An emergent pulmonary embolectomy was performed under total cardiopulmonary bypass. Residual emboli of bilateral pulmonary arteries were detected with a fiberoptic choledochoscope and removed carefully with forceps. Pulmonary angioscopic evaluation appears to be safe and useful for direct visual detection of emboli and completion of embolectomy.
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PMID:[A case report of pulmonary embolectomy using an endoscope for the detection of residual emboli]. 963 37

Electrocardiographic (ECG) findings of pulmonary embolism (PE) include S1Q3T3 pattern, right bundle-branch block, right-axis deviation, and T-wave inversion in medial precordial leads. We report other uncommon ECG changes associated with various symptoms during recurrent PE as documented by computed tomography (CT) scans in a single patients. An 83-year-old woman was admitted with PE secondary to deep venous thrombosis in the left leg. During episodes of chest pain, ECG showed QTc prolongation (480 ms) with new T-wave inversion in leads III, aVF, and V1-V3, and ST-segment depression in leads V5-V6. Despite adequate anticoagulant therapy, recurrent episodes of PE occurred in the hospital. When the patient experienced sudden chest tightness, ECG showed a new S-wave notch in lead V1 and clock-wise rotation with sinus tachycardia. She also experienced transient syncope with hypotension. At this time, ECG showed transient atrioventricular junctional rhythm followed by sinus arrest, and CT scan showed a new massive embolus in the main pulmonary trunk with right ventricular dilatation, as demonstrated by echocardiography. The mechanism responsible for QTc prolongation with ST-T changes, the S-wave notch in lead V1 with clockwise rotation, or atrioventricular junctional rhythm with sinus arrest during PE may be associated with myocardial ischemia, acute right ventricular overload, or vagal reflex, respectively.
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PMID:Uncommon electrocardiographic changes corresponding to symptoms during recurrent pulmonary embolism as documented by computed tomography scans. 982 4

The electrocardiogram (ECG) may be entirely normal in the patient with pulmonary embolism (P/E); alternatively, any number of rhythm and/or morphologic abnormalities may be observed in such a patient. The abnormal ECG may deviate from the norm with alterations in rhythm, in conduction, in axis of the QRS complex, and in the morphology of the P wave, QRS complex, and ST segment/T wave. The electrocardiographic findings associated with PE are numerous, including arrhythmias (sinus tachycardia, atrial flutter, atrial fibrillation, atrial tachycardia, and atrial premature contractions), nonspecific ST segment/T wave changes, T wave inversions in the right precordial leads, rightward QRS complex axis shift and other axis changes, S1Q3 or S1Q3T3 pattern, right bundle branch block, and acute cor pulomnale. This review focuses on the ECG and the various abnormalities seen in the patient with PE.
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PMID:Electrocardiographic manifestations of pulmonary embolism. 1159 73

A 42 year old woman was referred to the emergency department from the radiology department after having a syncopal episode during a triplex examination of the lower extremities for acute painful right leg swelling five hours earlier that morning. She had no significant medical history, smoked 3-5 cigarettes a day, and had been taking contraceptive medication for menorrhagia for the preceding three months. On presentation she was cyanotic, dyspnoeic, and haemodynamically unstable. ECG showed sinus tachycardia of 120 beats/min with ST elevations from V1 through V3 mimicking anteroseptal acute myocardial infarction. Ten minutes after presentation she was thrombolysed with 80 mg tenecteplase leading to ST elevation resolution and remarkable haemodynamic recovery after 20 minutes. This case shows how pulmonary embolism can mimic anteroseptal acute myocardial infarction on ECG and the life saving results from rapid thrombolysis with tenecteplase.
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PMID:Massive pulmonary embolism with ST elevation in leads V1-V3 and successful thrombolysis with tenecteplase. 1520 Dec 67

To assess the pre-study, null hypothesis that there is no difference in the electrocardiogram (EKG) findings for Emergency Department (ED) patients who rule in vs. rule out for suspected pulmonary embolism, a retrospective review of a cohort of patients with pulmonary embolism and their controls was conducted in an academic, suburban ED. Patients who were evaluated in the ED during a one-year study period for symptoms suggestive of pulmonary embolism were eligible for inclusion. All patients with pulmonary embolism and sex- and age-matched controls comprised the final study groups. Two board-certified cardiologists reviewed each patient's EKG. There were 350 eligible patients identified; 49 patients with pulmonary embolism and 49 controls were entered into the study. The most common rhythm observed in both groups was normal sinus rhythm (67.3% cases vs. 68.6 % controls; p = 1.0). Abnormalities believed to be associated with pulmonary embolism occurred with similar frequency in both case and control groups (sinus tachycardia [18.8 % vs. 11.8%, respectively; p = 0.40]), incomplete right bundle branch block (4.2% vs. 0.0%, respectively; p = 0.24), complete right bundle branch block (4.2% vs. 6.0, respectively; p = 1.0), S1Q3T3 pattern (2.1 vs. 0.0, respectively; p = 0.49), S1Q3 pattern (0.0 vs. 0.0), and extreme right axis (0.0 vs. 0.0). New EKG changes were identified more frequently for patients with pulmonary embolism (33.3% vs. 12.5% controls; p = 0.03), but specific findings were rarely different between cases and controls. In our cohort of ED patients, we did not identify EKG features that are likely to help distinguish patients with pulmonary embolism from those who rule out for the disease.
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PMID:Electrocardiographic findings in Emergency Department patients with pulmonary embolism. 1526 52


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