TNCC 9th Edition Exam with suitable graded A+ question and answers

TNCC 9th Edition Exam with suitable graded A+ question and answers 1. An adult pt who sustained a severe head trauma has been intubated and is being manually ventilated via bag-mask device at a rate of 18 bpm. The pt has received one IV fluid bolus of 500 mL of warm isotonic crystalloid solution. The PaCO2 is 30 mmHg (4.0 kPa), and the pulse oximetry is 92%. BP is 142/70 mmHg. What is the most important intervention to manage the cerebral blood flow? a) decrease the rate of manual ventilation b) initiate another fluid bolus c) recheck endotracheal tube placement d) increase the amount of oxygen delivered: a) decrease the rate of manual ventilation CO2 is the primary regulator of blood flow to the brain. Aggro manual ventilation results in decreased PaCO2 levels, which results in vasoconstriction, which then leads to decreased ICP and inadequate delivery of O2 and glucose to the brain. Bagging should be at a rate of one breath every 6 or 10 seconds