The volume of air that does not engage in alveolar gas exchange during ventilation is called dead space. 1 Physiological quiet space exists during normal breathing in the resting state. Anatomical and functional/alveolar dead space is included in physiological dead space.

Aortic Stenosis (AS) is the most prevalent valvular heart disease, affecting up to 10% of all persons over the age of 80 and carrying a 50% death risk within two years. The surgical aortic valve replacement procedure continues to be the gold standard for individuals with a low to moderate surgical risk.

Mask ventilation is a critical part of airway control. While there are ways for assessing the likelihood of difficulties with intubation and rating the view during laryngoscopy, there is no acknowledged scale for grading mask ventilation to our knowledge.

Mask ventilation may save lives, particularly during difficult intubation. Numerous papers have discussed various methods for improving mask ventilation. This article summarizes the known literature and theories on challenging mask ventilation

Since the inception of anaesthesia, the facemask has been an indispensable and adaptable piece of equipment. It is a simple, non-

BQ+ anesthesia mask is approved for general anesthetic induction and maintenance in adult and pediatric patients undergoing inpatient or outpatient surgery.

With the aid of this guide, intravenous treatment practitioners will be able to better comprehend some of the challenges surrounding physico-chemical drug interactions that are pertinent to IV drug therapy and parenteral nutrition.