Mouth opening/breathing is common in sleep apnea and linked to more nocturnal water loss.

ABSTRACT:

Background

Mouth opening/breathing during sleep is common in patients with obstructive sleep apnea (OSA), which is probably associated with more water loss and higher risk for nocturnal ischemic heart attack. This study aimed to evaluate nocturnal changes in hematocrit/hemoglobin levels and estimated plasma volume loss in OSA patients and its relation to their OSA severity and mouth open/breathing.

Methods

Sixty OSA patients and fifteen healthy controls were enrolled and underwent overnight polysomnography. Mouth status was evaluated via an infrared camera and nasal/mouth airflow. Hematocrit and hemoglobin levels in peripheral venous blood were measured before and after sleep to estimate the change of plasma volume.

Results

Compared to controls, OSA patients had a gre

SUBMITTER: Yi-Fong Su V 

PROVIDER: S-EPMC10209680 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature