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[ST segmental changes and arrhythmias in obstructive sleep apnea].

S Andreas1, G Hajak, P Natt

  • 1Abteilung für Kardiologie und Pneumologie, Universität Göttingen.

Pneumologie (Stuttgart, Germany)
|September 1, 1991
PubMed
Summary

Obstructive sleep apnea (OSA) patients do not experience ischemic ST segment depression without coronary heart disease. Ventricular arrhythmias in OSA are unlikely caused by myocardial ischemia.

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[Not Available].

MMW Fortschritte der Medizin·2016

Area of Science:

  • Cardiology
  • Sleep Medicine
  • Internal Medicine

Context:

  • Obstructive sleep apnea (OSA) is characterized by intermittent hypoxia.
  • The link between OSA-induced hypoxia and myocardial ischemia, specifically ST segment depression, remains unclear.
  • Previous research has not definitively established this association.

Purpose:

  • To investigate whether the fall in arterial oxygen saturation during apneas in OSA patients causes myocardial ischemia and ST segment depression.
  • To assess the relationship between OSA severity and electrocardiogram (ECG) findings.
  • To explore potential causes of ventricular arrhythmias in OSA patients.

Summary:

  • Fifteen consecutive OSA patients underwent Holter ECG and polysomnography.
  • Patients with no prior evidence of coronary heart disease were included.

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  • No significant ST segment depression was observed in any patient, despite varying degrees of OSA severity and minimal oxygen saturation levels.
  • Ventricular arrhythmias were present in some patients but not correlated with myocardial ischemia.

    • Impact:

    • This study suggests that OSA does not induce ischemic ST segment depression in individuals without underlying coronary heart disease.
    • The findings indicate that myocardial ischemia is not the primary driver of ventricular arrhythmias observed in OSA patients.
    • Further research is needed to elucidate the mechanisms behind arrhythmias in OSA.