Correlation of mean pulmonary artery wedge pressure, left atrial dimention, and PTF-V1 in patients with acute myocardial infarction.

Abstract

The mean pulmonary artery wedge pressure (PAWP), left atrial dimension (LAD) by echocardiography, and PTF-V1 in the electrocardiogram were correlated with each other in 16 patients with acute myocardial infarction in the control period and after therapeutic intervention with either Dextran or furosemide and/or nitroprusside. No significant correlation was found between a normal control PAWP and the LAD. An increased control PAWP correlated well with an increased LAD (r = 0.98). No significant correlation was found between the LAD and the PAWP whether normal or elevated after therapeutic intervention. No significant correlation was found between the PAWP whether normal or elevated and the PTF-V1. No significant correlation was found between the LAD and the PTF-V1. We conclude in acute myocardial infarction 1) the PTF-V1 is not useful in assessing PAWP before or after therapeutic intervention, 2) the LAD correlates poorly with a normal control PAWP but correlates well with an elevated control PAWP, and 3) the LAD cannot be used to assess PAWP after therapeutic intervention.

Compromised left atrial function and increased size predict raised cavity pressure: a systematic review and meta‐analysis

“…On the other hand, raised LA pressure and increased wall stress seem to have a direct effect on myocardial function irrespective of cavity enlargement (Bytyçi et al, ). We have previously shown that in patients with systemic hypertension and paroxysmal atrial fibrillation LA myocardial deformation is compromised irrespective of cavity volume (Orlando et al ., ; Henein et al ., ). Our current analysis confirms those findings in showing that reduced LA strain is the strongest correlate with PCWP, over and above structural ones.…”

Supraventricular Tachyarrhythmias in Acute Myocardial Infarction

“…Alternatively, the P notching in CR, could be interpreted as a sign of left atrial enlargement, but the lack of negative terminal force in CR, in most of the cases makes this interpretation less probable. Moreover, no correlation has been found in AM1 between the P wave terminal force in V, and left atrial dimension measured by echocardiography (12). Recently the ECG pattern termed left atrial enlargement was shown to be unrelated to both left atrial size and pulmonary capillary wedge pressure but well correlated to a delay in atrial activation measured by endocardia1 mapping (4, 5).…”