Comparative Study of CPAP Predictive Equations and In-laboratory Manual Titration in Thai Patients With Obstructive Sleep Apnea

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07376343

Enrollment

150

Registered

2026-01-29

Start date

2026-02-01

Completion date

2026-12-31

Last updated

2026-04-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

OSA - Obstructive Sleep Apnea

Keywords

OSA, obstructive sleep apnea, CPAP, continuous positive airway pressure, equation, Thailand, sleep test, polysomnography

Brief summary

The goal of this observational study is to compare predictive equations for continuous positive airway pressure (CPAP) with in-laboratory manual titration in patients with obstructive sleep apnea (OSA). The main question the study aims to answer is: Which CPAP predictive equation best predicts the optimal CPAP pressure in OSA patients in Thailand? Participants will undergo an in-laboratory sleep study.

Detailed description

This study is a cross-sectional study involving Thai patients aged 18 years or older with suspected obstructive sleep apnea (OSA). Participants will undergo an in-laboratory sleep study. During the study, sleep technicians will use CPAP predictive equations to estimate the optimal CPAP pressure.

Interventions

DIAGNOSTIC_TESTSleep test

Type 1 polysomnography will be performed in the Sleep Center of Thammasat (SCENT).

OTHERPredictive equations of continuous positive airway pressure (CPAP)

CPAP predictive equations will be selected based on evidence from reliable studies.

Study design

Observational model

COHORT

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Suspected OSA * Undergoing an in-laboratory sleep study

Exclusion criteria

* No indication for in-laboratory manual CPAP titration * Failure to determine an optimal CPAP pressure during in-laboratory manual CPAP titration

Design outcomes

Primary

Measure	Time frame	Description
Accuracy of CPAP equations in predicting the optimal pressure in OSA patients	At baseline	Sensitivity and specificity (%) of CPAP equations in predicting the optimal pressure in OSA patients

Countries

Thailand

Contacts

CONTACTNarongkorn Saiphoklang, MD

M_narongkorn@hotmail.com+6629269794

CONTACTApiwat Pugongchai, MSc

pu.apiwat@gmail.com+669269142

PRINCIPAL_INVESTIGATORNarongkorn Saiphoklang

Thammasat University Faculty of Medicine

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 18, 2026