Final answer:
To prevent urinary tract infections, one should empty the bladder when feeling the urge to urinate to avoid pooling of urine, which can lead to bacterial growth.
Step-by-step explanation:
The principle emphasized in the teaching plan for the prevention of urinary tract infections should be: Empty the bladder at the first sensation of fullness. This practice helps to prevent urine from pooling in the bladder, which can create an environment conducive to bacterial growth. Increasing fluid intake to produce 2 to 2.5 liters of urine per day is also recommended to help flush out bacteria. It is also advised to maintain proper hygiene and a diet low in protein, nitrogen, and sodium intake to reduce the excretory load on the kidneys.