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Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Obstructive sleep apnea and cardiac arrhythmias
1King Fahad Cardiac Centre, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia. ahersi@ksu.edu.sa
Annals of Thoracic Medicine
|March 31, 2010
Summary
Sleep-disordered breathing (SDB), including obstructive sleep apnea (OSA), is linked to cardiac arrhythmias. Understanding these connections may improve treatment outcomes for OSA patients.
Area of Science:
- Cardiology
- Pulmonology
- Sleep Medicine
Background:
- Sleep-disordered breathing (SDB), particularly obstructive sleep apnea (OSA), involves airway obstruction during sleep.
- Cardiac arrhythmias are frequently observed in OSA patients, but their prevalence and significance require further investigation.
- The interplay between OSA and arrhythmias impacts patient morbidity, mortality, and quality of life.
Purpose of the Study:
- To review the pathophysiological mechanisms linking OSA and cardiac arrhythmias.
- To examine the epidemiological extent of the OSA-arrhythmia association.
- To assess the potential effects of OSA treatment on cardiac arrhythmias.
Main Methods:
- Literature review synthesizing existing research on OSA and cardiac arrhythmias.
- Exploration of proposed pathophysiological pathways, including autonomic, hemodynamic, and neuroendocrine responses.
- Epidemiological analysis of the association between OSA and various arrhythmias.
Main Results:
- OSA triggers physiological responses that can precipitate cardiac arrhythmias.
- The exact mechanisms and prevalence require further elucidation.
- Treatment of OSA may influence the occurrence and severity of arrhythmias.
Conclusions:
- OSA is associated with cardiac arrhythmias through shared pathophysiological pathways.
- Further research is needed to clarify the precise mechanisms and clinical impact.
- Evaluating OSA treatment's effect on arrhythmias is crucial for patient management.
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Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
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Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
Disturbances in Heart Rhythm
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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Sinus Node Arrhythmias
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Decreased pulse rate
Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with bradycardia...
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