EMT Block 3 Signs and Symptoms Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

EMT Block 3 Signs and Symptoms Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What causes the skin to become pale during shock? Blood is shunted away from the skin to vital organs Why does a patient in hypovolemic shock become tachycardic? The body increases heart rate to maintain blood pressure and perfusion What pathophysiological process leads to altered mental status during shock? Decreased oxygen and glucose delivery to the brain Why does breathing become rapid in early shock? To compensate for metabolic acidosis and low oxygen levels What causes cool, clammy skin in most forms of shock? Peripheral vasoconstriction triggered by the sympathetic nervous system 2 What causes wheezing in an asthma attack? Narrowing and inflammation of the lower airways What leads to fluid accumulation in the lungs during left-sided heart failure? Blood backs up into the pulmonary circulation Why do patients with anaphylaxis develop widespread swelling and low blood pressure? Histamine release causes vasodilation and increased capillary permeability What causes stridor in upper airway obstruction? Turbulent airflow through a narrowed upper airway Why is blood pressure often normal in compensated shock? The body activates compensatory mechanisms like vasoconstriction and increased heart rate What causes jugular vein distension in tension pneumothorax? Increased pressure in the chest impairs venous return to the heart 3 Why does a patient with sepsis often have a fever? The immune system releases chemicals that raise the body’s temperature What causes abdominal distension in internal bleeding? Blood collects in the peritoneal cavity, expanding the abdomen Why does cyanosis appear in late hypoxia? There is inadequate oxygen in the blood reaching tissues What pathophysiology causes altered breathing patterns after a head injury? Pressure on the brainstem affects respiratory centers What causes paradoxical chest movement in a flail chest? The broken section of the rib cage moves independently from the rest of the chest Why does pericardial tamponade reduce cardiac output? Fluid buildup in the pericardial sac compresses the heart, preventing filling 4 What causes a narrowing pulse pressure in cardiac tamponade? Reduced stroke volume lowers systolic pressure while diastolic remains stable Why do pupils become unequal with a brain injury? Pressure on the cranial nerves affects pupil