[The clinical and diagnostic value of some hemodynamic indices for the assessment of silent ischemia in patients with low myocardial contractility].
During initial anesthesia, central and peripheral hemodynamic parameters were studied in 32 patients operated on for coronary heart disease (CHD). The patients were divided into 3 groups: 1) those with < 35% ejection fraction (EF) with postinfarct left ventricular (LV) aneurysm (PLVA); 2) those with > 35% EF with PLVA; 3) those with > 35% EF without PLVA. All the examinees were assigned as having NYHA functional class III-IV. During the study, the authors examined central and peripheral hemodynamic parameters: ECG, invasive blood pressure (BP), pulmonary pressure, central venous pressure, and cardiac output. The findings were used to calculate cardiac index (CI) and its changes (CI). In addition, the indices of rate pressure product, a marker of myocardial contractility and the Buffington index (I baf) is a BPmean-heart rate ratio), a marker of possible myocardial ischemia, were calculated. To gain some insight into the role of ischemia in the reduction of SI in the examinees, the authors modified the index I baf: they used the index perfusion pressure in the coronary bed instead of BPmean in the formula.
Veselova
Iu V
IuV
Abadzhian
M F
MF
Zatevakhina
M V
MV
D000768:Anesthesia, General; D001794:Blood Pressure / Q000502:physiology; D002302:Cardiac Output / Q000502:physiology; D004452:Echocardiography; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology*; D017202:Myocardial Ischemia / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D012720:Severity of Illness Index