Morphine may be used to manage acute coronary syndrome because it

Morphine may be used to manage acute coronary syndrome because it

• A. Produces central nervous system analgesia
• B. Produces venodilation
• C. Alleviates dyspnea
• D. Decreases systemic vascular resistance

Answer: (A)

The main idea being tested is how pain relief from morphine helps during acute coronary syndrome. When chest pain is severe, the body reacts with a surge of sympathetic activity—the heart rate and blood pressure rise, increasing myocardial oxygen demand and worsening ischemia. Morphine works in the central nervous system to lessen pain and anxiety, which dampens that sympathetic drive. With less sympathetic stimulation, the heart doesn’t have to work as hard, reducing oxygen demand and helping relieve the ischemic strain. This analgesic and anxiolytic effect directly addresses the triggers that worsen chest pain in ACS, making it the best reason to use morphine in this setting. While morphine can also cause venodilation (reducing preload) and may help with dyspnea in some patients, those are secondary effects. The crucial, primary benefit in the ACS context is the CNS-mediated analgesia that lowers pain and the accompanying stress response.

The main idea being tested is how pain relief from morphine helps during acute coronary syndrome. When chest pain is severe, the body reacts with a surge of sympathetic activity—the heart rate and blood pressure rise, increasing myocardial oxygen demand and worsening ischemia. Morphine works in the central nervous system to lessen pain and anxiety, which dampens that sympathetic drive. With less sympathetic stimulation, the heart doesn’t have to work as hard, reducing oxygen demand and helping relieve the ischemic strain. This analgesic and anxiolytic effect directly addresses the triggers that worsen chest pain in ACS, making it the best reason to use morphine in this setting.

While morphine can also cause venodilation (reducing preload) and may help with dyspnea in some patients, those are secondary effects. The crucial, primary benefit in the ACS context is the CNS-mediated analgesia that lowers pain and the accompanying stress response.