Difficulty: Hard

Average Score: 33%

Which of the following can adversely affect the outcome of a GTT?

Rationale

Patient drinks soda within 4 hr prior to testing.

Consuming soda or any sugary beverage before a Glucose Tolerance Test (GTT) can lead to elevated blood glucose levels, potentially skewing the test results and making it difficult to accurately assess the patient's glucose metabolism.

A (Results are recorded on paper, instead of in the electronic health record.) YOUR ANSWER

Recording results on paper rather than electronically does not directly affect the physiological outcomes of the GTT itself. While electronic records may enhance data management and accessibility, the method of recording does not alter the test results or the patient's metabolic response during the test.

B (Blood is drawn three × during GTT.) YOUR ANSWER

Drawing blood multiple times during a GTT is standard practice to monitor the patient's glucose levels at different intervals. This procedure is designed to evaluate how well the body processes glucose and does not negatively impact the results of the test when performed correctly.

C (Nurse practitioner completes GTT.) YOUR ANSWER

The qualifications of the healthcare provider administering the GTT do not inherently affect the physiological outcomes of the test. A nurse practitioner is trained to perform the test accurately and can provide the same level of care and assessment as a physician, ensuring the test's integrity.

D (Patient drinks soda within 4 hr prior to testing.) CORRECT

Drinking soda before a GTT introduces additional sugars into the bloodstream, which can artificially elevate glucose levels and lead to misleading results. This pre-test consumption is a critical factor that can adversely affect the outcome of the GTT, making it vital for patients to fast appropriately before the test.

Conclusion

The integrity of a Glucose Tolerance Test relies heavily on proper preparation, including fasting requirements. Among the choices presented, the consumption of soda prior to testing stands out as a significant factor that can skew results, leading to incorrect assessments of glycemic control. Other options regarding the method of recording or the provider administering the test do not impact the physiological response measured during the GTT.

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