الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Obesity-related health issues have a negative influence on quality of life and place a significant financial burden on healthcare systems. Obesity is linked to an increased risk of cardiovascular illness, metabolic diseases such as type II diabetes, and hypoventilation syndrome (OHS). In chosen individuals, bariatric surgery may offer a way to achieve long-term weight loss and decrease healthcare spending. However, bariatric operations are compounded by the added hazards of anesthesia and surgery in obese patients.
Respiratory problems are common in the general surgical population and are frequently linked to more extended hospital stays and higher mortality rates. pathological and physiological alterations caused by obesity, which have a negative impact on gas exchanges and lung mechanics. Noninvasive ventilation devices, including continuous positive airway pressure (CPAP) and also bi-level positive airway pressure, may aid obese patients following bariatric surgery to avoid postoperative pulmonary problems. high-flow nasal oxygen was first shown to be a successful treatment for acute respiratory insufficiency in pediatric and newborn populations. With increasing clinical applications, it has recently gained appeal as a treatment for adult . HFNC are intended to deliver an air/oxygen blend at a specific proportion of inspired oxygen (FiO2). Compared to traditional oxygen delivery devices, humidification and heating of inspired gases enable larger flow rates to be tolerated.