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Psychiatry Investig > Volume 20(1); 2023 > Article
Psychiatry Investigation 2023;20(1):62-68.
DOI: https://doi.org/10.30773/pi.2022.0203    Published online January 25, 2023.
Old Age, Female Sex, and Psychotropic Medications Predict Hyposalivation But Not Heart Rate Variability
Seung-Yup Lee1  , Kyu-In Jung1  , Min-Hyeon Park1  , Chang-Uk Lee2 
1Department of Psychiatry, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
2Department of Psychiatry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
Correspondence: Chang-Uk Lee ,Tel: +82-2-2258-6082, Fax: +82-2-594-3870, Email: jihan@catholic.ac.kr
Received: July 14, 2022   Revised: September 19, 2022   Accepted: October 4, 2022   Published online: January 25, 2023
Abstract
Objective
To explore risk factors for dry mouth and examine the clinical utility of the heart rate variability (HRV) test in the prediction of dry mouth.
Methods
Every outpatient, who underwent tests for both unstimulated salivary flow and HRV, was retrospectively reviewed. After excluding seven subjects, the demographics and clinical factors in 70 total patients were collected. Based on objective salivary flow rates, patients were classified into normal (≥0.2 mL/min) or hyposalivation groups (<0.2 mL/min), and inter-group comparisons were performed with a two-tailed statistical significance of 0.05.
Results
Patients with subjective dry mouth were significantly more likely to show hyposalivation. Advanced age, female sex, and current use of psychotropic medications were identified as risk factors for dry mouth. However, dry mouth was not associated with any HRV parameters.
Conclusion
HRV test did not demonstrate a clinical utility in predicting dry mouth. Because subjective dry mouth is significantly associated with objective hyposalivation, a simple probing question would be useful for early recognition of dry mouth. Clinical attention is required for patients meeting criteria of older age, female, and/or using psychotropic prescriptions. Prompt management of hyposalivation may improve quality of life and clinical outcome by enhanced treatment adherence.
Key words   Xerostomia; Saliva; Pharmacotherapy; Drug side effects; Autonomic nervous system
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