Echocardiographic assessment of pulmonary capillary wedge pressure in patients with frequent premature ventricular complexes.

BACKGROUND: Premature ventricular complex (PVC) is seen in most individuals. It has been shown that the kinetics-tracking index or Kawasaki-Tanaka index (KT index) strongly predicts pulmonary capillary wedge pressure (PCWP) by noninvasively. KT index was defined as log10 (active LAEF/minimum LAV index). We goaled to assess PCWP non-invasively in patients with frequent PVCs with normal left ventricular systolic functions and to evaluate whether there is an increase in PCWP before systolic and diastolic functions are impaired.

METHODS: About 55 patients with frequent PVCs as a patient group and 54 healthy volunteers as a control group were involved to the study. After the conventional echocardiographic examination, the vendor-independent software system (EchoPAC version 202) was used to obtain the time-left atrial volume (LAV) curve. total left atrial emptying function (LAEF), passive LAEF, and active LAEF were calculated to evaluate phasic left atrial (LA) function. In this study, ePCWP was calculated using the KT index, and KT index results and other echocardiographic parameters were compared between study groups.

RESULTS: LA anterior-posterior dimension, LA maximum volume index, and LA minimum volume index were significantly larger in the patient group (all p values < .001). Total LAEF were significantly reduced in patients with frequent PVC (p < .001). Estimated pulmonary capillary wedge pressure (ePCWP) by KT index was significantly higher in patients with frequent PVCs (p < .001).

CONCLUSIONS: Patients with frequent PVC had increased ePCWP as assessed by KT index.