]> 2026-07-31T09:41:44+00:00 WBR0092 0 en Serotonin reuptake inhibitor Norepinephrine reuptake inhibitor Serotonin receptor agonist Alpha-2 receptor antagonist GABA positive allosteric modulators Pharmacology A 35-year-old man presents to the emergency department (ED) for a persistent and painful erection for the past 5 hours. Upon further questioning, he reports he is a single man with no recent sexual activity or trauma to the genitals. The patient also denies any personal or family history of coagulation or hemoglobin disorders. His medical history is only significant for insomnia and major depression for the past 4 months, for which he was prescribed an antidepressant medication whose name he cannot recall. In the ED, the patient's blood pressure is 176/110 mmHg, temperature is 37 °C (98.6 °F), heart rate is 98/minute, and respiratory rate is 20/minute. On physical examination, the patient appears in pain. His penis is fully erect and tender, with no color changes or other signs of necrosis. The physician in the ED suspects the patient's symptoms may be drug-induced. Which of the following is the mechanism of action of the drug responsible for the patient's symptoms? A Genitourinary no-display Explanation 2020-10-27T23:19:30Z 2459150.471875 WBR0092