Pulmonary Barron's CCRN questions with correct answers

Ventilation CORRECT ANSWER-movement of air in and out of the lungs Central control (brain stem): primary control CORRECT ANSWER-1. Senses blood pH, a decrease in pH(acidosis) stimulates ventilation 2. Decrease pH = acidosis results in increase rate and/or depth of breathing Peripheral control (PaO2 "sensors in aortic arch): secondary control CORRECT ANSWER-1. Senses PaO2 of blood, decrease in PaO2 (hypoxemia) stimulates ventilation ^ rate/depth of breathing **Chronic PaCO2 retainers rely on MILD HYPOXEMIA for ventilator drive. If hypoxemia is corrected (PaO2), results in decreased drive to breathe (ventilate). Clinical indicator of ventilation? CORRECT ANSWER-PaCO2 Minute ventilation CORRECT ANSWER-Tidal volume (TV) x respiratory rate (RR) Normal minute ventilation CORRECT ANSWER-4L/minute Increase in minute ventilation CORRECT ANSWER-Means an increased work of breathing Primary muscle of ventilation CORRECT ANSWER-Diaphragm