<prompt> The most serious complication of prolonged sitting position is:Venous air embolismDysrhythmiasHypotensionNerve palsies  <response>: Ans. a. Venous air embolism Ref: Gregorys Pediatric Anesthesia 2012548, http: emedicine.medscape.comarticle761367-overviewThe most serious complication of prolonged sitting position is venous air embolism.Venous air embolism VAE, a subset of gas embolism, is an entity with the potential for severe morbidity and mortality. Venous air embolism is a predominantly iatrogenic complication that occurs when atmospheric gas is introduced into the systemic venous system. In the past, this medical condition was mostly associated with neurosurgical procedures conducted in the sitting position.- stylefont-size: 1.04761904761905em; font-family: Times New Roman, Times, serif; margin: 0 0 0 8px; text-indent: 0Venous air embolism is one of the most serious complications of anesthesia and surgery. It may occur whenever the operative site is elevated above the heart, and the risk increases as the height difference increases. Classically it is associated with posterior fossa surgeries in the sitting position. Gregorys Pediatric Anesthesia 2012548Side-Effects of Silting All the day Deep vein thrombosisQ ObesityQ Increased risk of heart diseaseQ Risk of diabetesQ Raised cholesterolQ Herniated disk Poor posture Knee pain Muscle weakness Increases risk of depressionQ Slowed metabolism Neck problems Back aches and painQ Shorter life span 