Oxygenation & Circulation ATI Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

Oxygenation & Circulation ATI Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What vital sign is most directly affected by poor oxygenation? Oxygen saturation (SpO2) What does cyanosis of the lips and fingertips indicate? Severe hypoxia Which part of the heart pumps oxygenated blood to the body? Left ventricle What symptom commonly appears first in a client with inadequate circulation? Fatigue What should the nurse do if a client suddenly develops shortness of breath while lying flat? Raise the head of the bed 2 How does low hemoglobin affect oxygenation? It decreases the blood’s ability to carry oxygen What assessment finding would suggest poor perfusion to the extremities? Cool, pale skin What immediate action should a nurse take if a client's pulse oximetry reading drops to 85%? Apply supplemental oxygen What heart sound is associated with fluid overload and heart failure? S3 heart sound What finding suggests a client is experiencing impaired circulation? Weak peripheral pulses What does clubbing of the fingernails usually indicate? Chronic hypoxia 3 What assessment finding suggests adequate circulation? Capillary refill less than 2 seconds Which client is most at risk for altered tissue perfusion? A client with congestive heart failure What breathing technique improves oxygenation in a client with emphysema? Pursed-lip breathing What nursing action supports better oxygenation for a client with pneumonia? Encouraging deep breathing and coughing Which laboratory test measures oxygen-carrying capacity? Hemoglobin level How does tachycardia affect oxygen delivery? It can decrease ventricular filling time, reducing oxygen delivery 4 What device measures both heart rate and oxygen saturation? Pulse oximeter What clinical sign suggests early circulatory shock? Tachycardia