The relationship between extracellular fluid and obstructive sleep apnea in non-obese patients

ABSTRACT

Objective

To evaluate the relationship between obstructive sleep apnea syndrome (OSAS) and the fluid change in composition throughout the night.

Methods

The study included 92 non-obese patients who underwent polysomnography because of suspected OSAS. Weight and body composition analyses were applied using a Tanita DC-360 multi-frequency body composition analysis device.

Results

In the correlation analyses between apnea/hypopnea index (AHI) values and independent variables, a positive relationship was determined with extracellular fluid shift (r: 0.381, p = 0.009) and change in neck circumference (r: 0.226, p = 0.031), and there was a negative relationship between disease severity and an increase in the number of daily steps taken (r: 0.208, p = 0.047).

Conclusion

The results of the study clearly showed that movement to the neck area of fluid accumulated in the lower extremities and an increase in extracellular fluid were related to AHI values independent of body mass index (BMI).

KEYWORDS:

• Obstructive sleep apnea syndrome
• body composition analysis
• extracellular fluid shift

Disclosure statement

The authors have no conflict of interest to declare.

Additional information

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.