Which description of stool is characteristic of intussusception?

The correct answer is choice A: "Urethral opening along ventral surface of penis."

Choice A rationale:

The statement "Urethral opening along ventral surface of penis" is correct. Hypospadias is a congenital condition where the opening of the urethra is located on the underside of the penis rather than at the tip. This anomaly requires surgical correction.

Choice B rationale:

The statement "Urethral opening along dorsal surface of penis" is incorrect. This statement describes an anatomically incorrect condition. The opening of the urethra is not supposed to be along the dorsal surface of the penis.

Choice C rationale:

The statement "Absence of a urethral opening" is incorrect. This statement describes a more severe condition called "urethral agenesis" where the urethral opening is completely absent. Hypospadias is different and involves a misplaced urethral opening.

Choice D rationale:

The statement "Penis shorter than usual for age" is not related to hypospadias. Hypospadias primarily involves the location of the urethral opening and is unrelated to the length of the penis.

The correct answer is choice D: Low in phosphorus.

Choice A rationale:

Supplemented with vitamins A, E, and K is not the characteristic of the diet for a child with chronic renal failure. While vitamin supplementation might be necessary in some cases, the primary dietary considerations in chronic renal failure are related to managing electrolyte imbalances, fluid retention, and waste buildup due to compromised kidney function.

Choice B rationale:

High in protein is not the recommended characteristic of the diet for a child with chronic renal failure. Kidneys affected by chronic renal failure have a reduced ability to filter and excrete waste products from protein metabolism. Excessive protein intake can lead to the accumulation of nitrogenous waste products, potentially worsening the condition and contributing to uremia.

Choice C rationale:

Low in vitamin D is not the primary characteristic of the diet for a child with chronic renal failure. Vitamin D metabolism can be affected by kidney dysfunction, but the focus of the diet in chronic renal failure is primarily on managing electrolyte levels, particularly phosphorus and potassium, as well as controlling fluid intake.

Choice D rationale:

Low in phosphorus is the correct characteristic of the diet for a child with chronic renal failure. Impaired kidney function in chronic renal failure leads to difficulty in excreting phosphorus, which can result in elevated blood phosphorus levels. High phosphorus levels can contribute to bone and mineral disorders and cardiovascular complications. Therefore, a diet low in phosphorus is crucial to prevent these complications and manage the progression of the disease.