In this contemporary study, overall serious adverse events after AM were lower than previously reported. However, patients with left ventricular ejection fraction <50%, ventricular arrhythmias, or low cardiac output syndrome at presentation were at higher risk compared with uncomplicated cases that had a benign prognosis and low risk of subsequent left ventricular systolic dysfunction.
A substantial proportion of patients does not arrive at the ED in a suitable time for reperfusion therapy. Patients using the EMS have a shorter arrival delay. Approximately half of the patients with stroke are sufficiently aware of the urgency of this clinical condition to activate the emergency telephone system.
A 70-year-old female was admitted for syncope preceded by chest pain. On admission ECG showed signs of myocardial ischaemia and cardiac troponin I (cTnI) was mildly elevated. Acute coronary syndrome without ST elevation was diagnosed. During hospitalization transthoracic echocardiography (TTE) revealed the presence of a round echogenic pedunculated mass adherent to the aortic valve. Cardiac catheterization revealed normal coronary arteries. According to the hypothesis that the lesion could be responsible for both acute coronary syndrome and syncope, surgical intervention was scheduled. The mass was removed and the histological examination revealed a cardiac papillary fibroelastoma (CPF). CPF is the most common tumour of the cardiac valves, it is often found incidentally but it can cause myocardial infarction, sudden death, syncope and stroke; its embolization is the most common complication. For symptomatic patients surgical excision is curative.
We evaluated the acute effect of the application of positive end-expiratory pressure (PEEP) on LV diastolic function in 10 healthy subjects. We assessed load dependent diastolic function by Doppler examination of transmitral flow and load independent diastolic function by color M-mode propagation velocity of early flow into the LV cavity (Vp). During the application of PEEP in comparison to the baseline, we found a significant reduction of the E wave peak velocity [79 (64-83) vs. 65 (57-72) cm/s; p = 0.028] and a significant reduction in Vp [84 (73-97) vs. 53 (48-66); p = 0.012]. Moreover, we found a significant reduction in left atrial area [15 (13-18) vs. 12 (10-14) cm(2); p = 0.018] and right atrial area [12 (11-15) vs. 11 (9-12) cm(2); p = 0.015]. No difference was found in global LV systolic function. The application of PEEP acutely modifies the diastolic flow pattern across the mitral valve, and reduces atrial dimensions.
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