Which one of the following findings is indicative of compromised LV performance?
increased left ventricular ejection time (LVET); normal pre-ejection period (PEP) and normal QS2 duration PEP/LVET ratio = 0.35; shoened QS2 duration PEP/LVET ratio > 0.35; no change in QS2duration Reduction in PEP, LVET, and QS2 duration