International journal of general medicine
Correlation Analysis of Sleep Quality and Heart Rate Variability in Patients Undergoing Cardiac Surgery: A Prospective Observational Cohort Study
By Lu T and Chen J.
Abstract
Objective
To explore the correlation between sleep quality (SQ) during the perioperative period of patients undergoing cardiac surgery and heart rate variability (HRV).
Methods
This prospective observational cohort study included 95 patients undergoing cardiac surgery. SD was defined as a Pittsburgh Sleep Quality Index (PSQI) total score >7, and all participants were categorized into an SD group and a non-SD group. HRV parameters were collected and compared at four predefined time points: 1 day preoperatively (T0), 1 day postoperatively (T1), 2 days postoperatively (T2), and 3 days postoperatively (T3). Repeated-measures ANOVA analyzed dynamic changes in HRV parameters within the SD group. Lasso regression screened the main HRV parameters associated with SD, followed by logistic regression to identify significantly related to SD. Point-biserial correlation analysis was used to test the positive or negative correlation between HRV parameters and SD.
