Final answer:
D. Urinary retention Suprapubic distention in Mr. Potter's lower abdomen is most likely a result of urinary retention, a condition that occurs when a person cannot fully empty their bladder.
Step-by-step explanation:
Mary notes suprapubic distention in Mr. Potter's lower abdomen, which is most likely a result of urinary retention. This condition can occur due to various factors, such as obstruction in the urinary tract, nerve problems affecting bladder control, or as a side effect of certain medications. It is described as an inability to fully empty the bladder. Given the available information, while obesity and excess fluid intake could contribute to a distended abdomen, they do not directly cause retention of urine. Gas accumulation in the intestines can result in bloating and distention, but is less likely to be specifically suprapubic. Urinary retention is more directly related to suprapubic distention and is consistent with the pressure and decreased capacity of the bladder described in pregnancy or other conditions affecting the urinary tract.
Suprapubic distention, as observed by palpating the lower abdomen, is most likely a result of urinary retention (choice D). This occurs when there is an inability to fully empty the bladder, leading to accumulation of urine and distention of the bladder. In the case of Mr. Potter, the compression of the bladder by an enlarged uterus during late pregnancy is the likely cause. This can result in increased frequency of urination.