Heart rate variability: a sensitive parameter for detecting abnormal cardiocirculatory changes during a stressful...

Area of Science:

• Cardiology
• Physiology
• Dental Medicine

Background:

• Dental procedures can induce significant physiological stress.
• Assessing cardiovascular responses to stress is crucial for patient safety.
• Traditional parameters like blood pressure and heart rate may not fully capture these responses.

Purpose of the Study:

• To evaluate the sensitivity of heart rate variability (HRV) in quantifying the cardiocirculatory reaction to dental stress.
• To compare HRV's effectiveness with other clinical parameters such as systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate (HR).

Main Methods:

• Twenty-five healthy subjects undergoing dental extractions were enrolled.
• Measurements of SBP, DBP, HR, and HRV were taken at baseline, after anesthesia, during extraction, and post-extraction.
• Time-domain HRV measures were derived from R-R intervals over a five-minute continuous electrocardiographic record.

Main Results:

• SBP and DBP showed no significant time-related differences.
• HR values differed significantly across three of the four testing periods.
• HRV values were significantly different in all four testing periods and demonstrated greater variability than HR during dental extractions.

Conclusions:

• HRV is a highly sensitive indicator of sympathetic drive to the heart during dental procedures.
• HRV monitoring can aid clinicians in detecting early cardiac impairment and preventing emergencies in patients with heart disease.