Nokea
The nurse is providing pre-procedure teaching about an ultrasound. The nurse informs the patient that in preparation for an ultrasound of the lower urinary tract the patient will require what?
- A. Increased fluid intake to produce a full bladder
- B. IV administration of radiopaque contrast agent
- C. Sedation and intubation
- D. Injection of a radioisotope
Correct Answer: A
Rationale: Ultrasonography requires a full bladder; therefore, fluid intake should be encouraged before the procedures. The administration of a radiopaque contrast agent is required to perform IV urography studies, such as an IV pyelogram. Ultrasonography is a quick and painless diagnostic test and does not require sedation or intubation. The injection of a radioisotope is required for nuclear scan and ultrasonography is not in this category of diagnostic studies.
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A patient with a diagnosis of respiratory acidosis is experiencing renal compensation. What function does the kidney perform to assist in restoring acidbase balance?
- A. Sequestering free hydrogen ions in the nephrons
- B. Returning bicarbonate to the bodys circulation
- C. Returning acid to the bodys circulation
- D. Excreting bicarbonate in the urine
Correct Answer: B
Rationale: The kidney performs two major functions to assist in acidbase balance. The first is to reabsorb and return to the bodys circulation any bicarbonate from the urinary filtrate; the second is to excrete acid in the urine. Retaining bicarbonate will counteract an acidotic state. The nephrons do not sequester free hydrogen ions.
A nurse is caring for a 73-year-old patient with a urethral obstruction related to prostatic enlargement. When planning this patients care, the nurse should be aware of the consequent risk of what complication?
- A. Urinary tract infection
- B. Enuresis
- C. Polyuria
- D. Proteinuria
Correct Answer: A
Rationale: An obstruction of the bladder outlet, such as in advanced benign prostatic hyperplasia, results in abnormally high voiding pressure with a slow, prolonged flow of urine. The urine may remain in the bladder, which increases the potential of a urinary tract infection. Older male patients are at risk for prostatic enlargement, which causes urethral obstruction and can result in hydronephrosis, renal failure, and urinary tract infections.
A patient with elevated BUN and creatinine values has been referred by her primary physician for further evaluation. The nurse should anticipate the use of what initial diagnostic test?
- A. Ultrasound
- B. X-ray
- C. Computed tomography (CT)
- D. Nuclear scan
Correct Answer: A
Rationale: Ultrasonography is a noninvasive procedure that passes sound waves into the body through a transducer to detect abnormalities of internal tissues and organs. Structures of the urinary system create characteristic ultrasonographic images. Because of its sensitivity, ultrasonography has replaced many other diagnostic tests as the initial diagnostic procedure.
A nurse knows that specific areas in the ureters have a propensity for obstruction. Prompt management of renal calculi is most important when the stone is located where?
- A. In the ureteropelvic junction
- B. In the ureteral segment near the sacroiliac junction
- C. In the ureterovesical junction
- D. In the urethra
Correct Answer: A
Rationale: The three narrowed areas of each ureter are the ureteropelvic junction, the ureteral segment near the sacroiliac junction, and the ureterovescial junction. These three areas of the ureters have a propensity for obstruction by renal calculi or stricture. Obstruction of the ureteropelvic junction is most serious because of its close proximity to the kidney and the risk of associated kidney dysfunction. The urethra is not part of the ureter.
A patient with a history of incontinence will undergo urodynamic testing in the physicians office. Because voiding in the presence of others can cause situational anxiety, the nurse should perform what action?
- A. Administer diuretics as ordered.
- B. Push fluids for several hours prior to the test.
- C. Discuss possible test results as the patient voids.
- D. Help the patient to relax before and during the test.
Correct Answer: D
Rationale: Voiding in the bladder is frequently due can cause a guarding reflex that inhibits voiding due to situational anxiety. Because the patient should ensure that the outcomes of these studies determine frighten the bladder, the nurse must help you relax the bladder by providing as much privacy as possible. Diuret and fluid intake would be not sufficient to induce anxiety. It would be inappropriate to discuss test the bladder during a test.