Prompt prediction of successful defibrillation from 1-s ventricular fibrillation waveform in patients with out-of-hospital sudden cardiac arrest.

Purpose: Ventricular fibrillation (VF) is a common cardiac arrest rhythm that can be terminated by electrical defibrillation. During cardiopulmonary resuscitation, there is a strong need for a prompt and reliable predictor of successful defibrillation because myocardial damage can result from repeated futile defibrillation attempts. Continuous wavelet transform (CWT) provides excellent time and frequency resolution of signals.

Does central venous pressure or pulmonary capillary wedge pressure reflect the status of circulating blood volume in patients after extended transthoracic esophagectomy?

Purpose: We investigated whether central venous pressure (CVP) or pulmonary capillary wedge pressure (PCWP) can accurately reflect the status of circulating blood volume (CBV) during the perioperative period in adult patients after extended transthoracic esophagectomy.

Methods: In 16 adult patients undergoing esophagectomy, simultaneous measurements of CVP, PCWP, and CBV were made at the following seven points: baseline (before surgery) and at 0, 12, 24, 36, 48, and 60 h after admission to the intensive care unit (ICU). CBV was estimated at the bedside with a pulse-dye densitometry method using indocyanine green.