open access

Vol 65, No 11 (2007)
Other
Published online: 2007-11-21
Submitted: 2012-12-28
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Original article
Usefulness of ambulatory ECG in the diagnosis of sleep-related breathing disorders

Stefan Ożegowski, Ewa Wilczyńska, Tomasz Piorunek, Katarzyna Szymanowska, Lech Paluszkiewicz
Kardiol Pol 2007;65(11):1321-1328.

open access

Vol 65, No 11 (2007)
Other
Published online: 2007-11-21
Submitted: 2012-12-28

Abstract


Background: Sleep-related breathing disorders (SRBD) are the additional factor related to poor prognosis in patients with cardiovascular disorders. The apnoea/hypopnoea index (AHI), describing the number of apnoea and hypopnoea episodes per one hour of sleep, has been used as a marker of severity of the disorder. The disease is present in 4% of men and 2% of women above 40 years of age. However, SRBD are diagnosed in less than 3% of patients with this syndrome due to lack of awareness of the disease among health care practitioners and patients. Polysomnography (PSG) has been used as a golden standard for detecting SRBD, however this test is available only in selected centres. Therefore, a simple, fast and inexpensive test for screening for SRBD is necessary. Respiratory activity influences the amplitude of ECG signal whereas heart rate variability (HRV) depicts the activity of the autonomic nervous system. These associations have been used to develop a new method for detection of SRBD involving analysis of HRV and morphology of ECG signal in ECG monitoring.
Aim: Assessment of accuracy of SRBD detection using estimated AHI (Est.AHI), calculated from Holter ECG recordings.
Methods: In a study group consisting of 74 patients tested for SRBD, simultaneous PSG and 24-hour ECG monitoring were performed. Following PSG, AHI for each patient was calculated. According to the AHI values patients were classified as SRBD patients (AHI >15), non-SRBD patients (AHI

Abstract


Background: Sleep-related breathing disorders (SRBD) are the additional factor related to poor prognosis in patients with cardiovascular disorders. The apnoea/hypopnoea index (AHI), describing the number of apnoea and hypopnoea episodes per one hour of sleep, has been used as a marker of severity of the disorder. The disease is present in 4% of men and 2% of women above 40 years of age. However, SRBD are diagnosed in less than 3% of patients with this syndrome due to lack of awareness of the disease among health care practitioners and patients. Polysomnography (PSG) has been used as a golden standard for detecting SRBD, however this test is available only in selected centres. Therefore, a simple, fast and inexpensive test for screening for SRBD is necessary. Respiratory activity influences the amplitude of ECG signal whereas heart rate variability (HRV) depicts the activity of the autonomic nervous system. These associations have been used to develop a new method for detection of SRBD involving analysis of HRV and morphology of ECG signal in ECG monitoring.
Aim: Assessment of accuracy of SRBD detection using estimated AHI (Est.AHI), calculated from Holter ECG recordings.
Methods: In a study group consisting of 74 patients tested for SRBD, simultaneous PSG and 24-hour ECG monitoring were performed. Following PSG, AHI for each patient was calculated. According to the AHI values patients were classified as SRBD patients (AHI >15), non-SRBD patients (AHI
Get Citation

Keywords

sleep-related breathing disorders; ambulatory ECG monitoring; apnoea

About this article
Title

Original article
Usefulness of ambulatory ECG in the diagnosis of sleep-related breathing disorders

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 65, No 11 (2007)

Pages

1321-1328

Published online

2007-11-21

Bibliographic record

Kardiol Pol 2007;65(11):1321-1328.

Keywords

sleep-related breathing disorders
ambulatory ECG monitoring
apnoea

Authors

Stefan Ożegowski
Ewa Wilczyńska
Tomasz Piorunek
Katarzyna Szymanowska
Lech Paluszkiewicz

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