Key result
Preoperative anxiety identified at hospital admission is directly related to a significant reduction in heart rate variability, as demonstrated by nonlinear methods such as the central tendency measure.
Why the study?
The study aimed to verify the influence of anxiety on heart rate variability during hospitalization and before surgery.
Does preoperative anxiety influence heart rate variability in patients awaiting orthopedic surgery?
Cross-Sectional (n=42)
No
Does preoperative anxiety influence heart rate variability in patients awaiting orthopedic surgery?
p-value: p=<0.05
Preoperative anxiety in orthopedic surgery patients is associated with a reduction in heart rate variability, indicating altered autonomic nervous system activity.
Preoperative anxiety may flag autonomic changes before orthopedic surgery; leaves open whether screening or intervention alters outcomes.
Anxiety is a negative emotional response to situations that threaten the subject. Objective: The present study aims to verify the influence of anxiety on heart rate variability, considering two specific times: hospitalization and before surgery. In this analytical and cross-sectional study, the Hospital Anxiety and Depression Scale (HADS) was used to classify anxiety levels. Methodology: The time series of RR intervals were collected by Polar® monitor. Nonlinear methods and decision tree algorithm were combined with HADS scale to analyze the influence of the preoperative period on heart rate variability. The nonlinear methods used detrended fluctuation analysis (DFA), recurrence quantification analysis (RQA), and central tendency measure (CTM). Results: Among the 42 study participants, 13 (31%) were classified as anxious at hospital admission. The applied time domain methods found an increase in the heart rate variability (HRV) values in all features analyzed (p < 0.05). CTM method showed HRV reduction for the values considering radius between 6 and 20 milliseconds (p < 0.05). Conclusion: The anxiety identified at admission is directly related to the reduction in heart rate variability demonstrated by nonlinear methods, such as the central tendency measure.
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Corrêa et al. (2021) conducted a cross-sectional in Preoperative orthopedic surgery (n=42). Preoperative anxiety vs. Non-anxious state / Hospital admission baseline was evaluated on Heart rate variability (HRV) measured by Central Tendency Measure (CTM) for radius between 6 and 20 milliseconds (p=<0.05). Preoperative anxiety identified at hospital admission is directly related to a significant reduction in heart rate variability, as demonstrated by nonlinear methods such as the central tendency measure.
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