A client who recently had rectal surgery reports extreme pai…

A client who recently had rectal surgery reports extreme pain in the supra-pubic area. He also reports a constant urge to urinate but has not been able to release any urine in the last 8 hours, even with intense straining. The nurse palpates a distended bladder and vital signs show tachycardia and hypertension. Based on this information, what is the patient most likely experiencing?