Preoperative circadian physical activity rhythm and postoperative delirium in cardiovascular surgery patients.

Preoperative circadian physical activity rhythm and postoperative delirium in cardiovascular surgery patients. Chronobiol Int. 2020 May 14;:1-8 Authors: Tan C, Saito N, Miyawaki I, Shiotani H Abstract Postoperative delirium, a common perioperative complication, is frequently observed in elderly surgical patients. Few studies have investigated the life rhythm of preoperative patients, and whether or not the preoperative life rhythm is associated with the development of postoperative delirium. The purpose of this study was to investigate the relationship between the preoperative circadian physical activity rhythm and postoperative delirium in cardiovascular surgery patients. A total of 43 patients who underwent cardiovascular surgery were included in this prospective study between July 2016 and September 2017 at Kobe University Hospital. All subjects used a "Life Microscope" wristband (a wristwatch-type terminal incorporating a 3-axis accelerometer monitoring) for 3-7 days at home before the planned surgery. Hourly mean values were calculated for the metabolic equivalents from the obtained activity amounts, and subsequently evaluated using cosine periodic regression analysis. The circadian rhythm parameters of mesor (24 h time series mean), amplitude (half the peak-trough variation), and acrophase (peak time) for the metabolic equivalents were obtained. The intensive care delirium screening checklist was used to assess for postoperat...
Source: Chronobiology International - Category: Biology Authors: Tags: Chronobiol Int Source Type: research