Final answer:
To assess for urinary retention in Mr. Sumo after catheter removal, one would monitor his ability to void, use physical examination to estimate bladder fullness, or employ bladder scanning if necessary. The normal micturition process and potential factors affecting urination such as age and neurological conditions should also be considered.
Step-by-step explanation:
To assess Mr. Sumo for urinary retention after the removal of his urinary catheter, you would monitor his ability to void within a reasonable timeframe post-catheter removal. It is normal to expect a person will feel the urge to urinate when the bladder reaches approximately 150 mL, with an increasing urgency as the bladder fills to 300-400 mL. Physical examination can be used, where you would palpate and percuss the lower abdomen to estimate bladder fullness. A bladder scan, which is a non-invasive ultrasound, can also be used to measure the volume of urine in the bladder if the patient is unable to void or if you suspect urinary retention. Micturition is the process of emptying the bladder, which normally requires coordination between the detrusor muscle and external urethral sphincter. Mr. Sumo's ability to urinate voluntarily indicates the function of his micturition reflex and external sphincter control.
An important consideration is to evaluate for underlying issues that may contribute to urinary retention. This includes assessing any physical challenges, neurological conditions, or factors like age that may affect bladder emptying.