In determining the glomerular filtration rate (GFR) or creatinine clearance, a 24-hour urine is obtained. If a reliable 24-hour urine collection is not possible,
a. it is not possible to determine the GFR.
b. the BUN may be used to determine renal function.
c. an elevated BUN/creatinine ratio can be used.
d. a standardized formula may be used to calculate GFR.
D
Historically, timed 24-hour urine collections have been used to evaluate GFR or creatinine clearance. If a reliable 24-hour urine collection is not possible, the Cockcroft and Gault formula may be used to determine the creatinine clearance from a serum creatinine value. The BUN level is not a reliable indicator of kidney function because the rate of protein metabolism is not constant. An increased BUN/creatinine ratio is typically noted with prerenal conditions, but does not provide an estimate of GFR.
You might also like to view...
A group of patients, colleagues from the same office, arrive at the ICU with symptoms of nausea, vomiting, and diarrhea
It is determined that they are suffering from radiation exposure as a result of an inconspicuous device placed in the office that leaked radiation over a period of days. The nurse suspects that which of the following was used in this terrorist attack? A) Radiological dispersal device B) Improvised nuclear device C) Nuclear weapon D) Simple radiological device
A nurse is planning the nursing care of an elderly client who presented to the emergency department in respiratory distress and has been admitted to an inpatient unit. Which of the following nursing diagnoses is correctly worded?
A) Excess fluid volume related to congestive heart failure as manifested by peripheral and pulmonary edema B) Exacerbation of congestive heart failure related to peripheral edema, excess fluid volume, and pulmonary edema C) Excess fluid volume and impaired gas exchanged related to congestive heart failure D) Congestive heart failure resulting ineffective airway clearance related to pulmonary edema
A patient diagnosed with a myopathy is at risk for aspiration. Which intervention should be included in the plan of care for this patient?
1. Instruct the patient to avoid thick liquids. 2. Instruct the patient to eat small bites of food and chew thoroughly before swallowing. 3. Instruct the patient to avoid solid foods. 4. Instruct the patient to consume thin, watery liquids with meals.
A nursing student tells a peer, "I'm having trouble understanding the rationale for not restraining confused patients." The best advice for the peer to offer would be
a. "Ask the smartest student in the class." b. "Ask a patient for their view about it." c. "Ask the instructor to explain it again." d. "Do an Internet search."