Breathing decreases during sleep due to decreased metabolism. Minute ventilation drops by 13-15% in each sleep stage. Rib cage contributes more to ventilation during sleep. Upper airway resistance increases by 230% during sleep. Arterial blood gases show hypoventilation despite reduced metabolism
OSCAR is a free, open-source CPAP analysis tool for viewing high-resolution sleep data. Converts CPAP data to graph form for breath-by-breath analysis. Compatible with Mac, Linux, and Windows operating systems. Available for download at sleepfiles.com/OSCAR/
Chest pain lasting longer than a few minutes indicates heart danger. Women are more likely to experience heart attacks without chest pain. Pain radiating down left side of body is classic heart attack symptom. Sudden unsteadiness with chest discomfort requires immediate medical attention
Breathing through mouth during sleep can cause snoring and sleep apnea. Raising head height with extra pillow helps prevent mouth opening. Regular exercise and stress reduction can help prevent mouth breathing. Regular cleaning and air purification reduce airborne allergens
ODI measures blood oxygen levels during sleep. Normal ODI score is fewer than five desaturation episodes per hour. Oxygen saturation should be 96-97% during sleep
Focusing on screens or deep concentration can cause momentary breath holding. Stress and anxiety can alter breathing patterns. Email apnea may occur during work when reading documents. Quick fixes include taking breaks and moving around