Old Age, Female Sex, and Psychotropic Medications Predict Hyposalivation But Not Heart Rate Variability

Area of Science:

• Oral Medicine
• Cardiology
• Geriatrics

Background:

• Dry mouth (xerostomia) significantly impacts quality of life.
• Hyposalivation, or reduced salivary flow, is a key objective measure.
• Heart rate variability (HRV) is a non-invasive measure of autonomic nervous system function.

Purpose of the Study:

• To identify risk factors for dry mouth.
• To evaluate the clinical utility of HRV testing in predicting dry mouth.

Main Methods:

• Retrospective review of 70 outpatients who underwent unstimulated salivary flow and HRV tests.
• Classification of patients into normal salivary flow (≥0.2 mL/min) or hyposalivation (<0.2 mL/min) groups.
• Statistical comparison of demographics and clinical factors between groups.

Main Results:

• Subjective dry mouth strongly correlated with objective hyposalivation.
• Risk factors for dry mouth included advanced age, female sex, and psychotropic medication use.
• No association was found between dry mouth and any HRV parameters.

Conclusions:

• HRV testing lacks clinical utility for predicting dry mouth.
• A simple question effectively identifies patients with hyposalivation.
• Clinical attention is warranted for older females and those on psychotropic medications.
• Early management of hyposalivation can improve patient outcomes and adherence.