Difficulty: Medium

Average Score: 65%

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 within 4 hours before a Glucose Tolerance Test (GTT) can significantly affect blood glucose levels, potentially leading to inaccurate results. This intake can lead to artificially elevated glucose levels, skewing the test's purpose of assessing the body's ability to manage glucose effectively.

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

While recording results on paper may be less efficient and more prone to human error, it does not directly influence the physiological outcomes of the GTT. The accuracy of the test results primarily hinges on the patient's preparation and adherence to testing protocols rather than the method of documentation.

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

Drawing blood three times during a GTT is standard practice designed to monitor glucose changes over time. This procedure is crucial for obtaining a comprehensive view of the patient's glucose metabolism and does not adversely affect the test outcome; rather, it enhances the reliability of the results.

C (Nurse practitioner completes GTT.) YOUR ANSWER

The involvement of a nurse practitioner in conducting the GTT should not adversely affect the test results, provided they are properly trained. The qualifications of the healthcare provider do not influence the physiological processes being measured; thus, the test's outcome relies on patient preparation rather than who administers it.

Conclusion

The GTT is sensitive to pre-test conditions, with dietary intake being a critical factor. Among the choices presented, only the consumption of soda prior to the test can lead to misleading results by artificially elevating glucose levels. Ensuring accurate adherence to testing protocols is essential for valid GTT outcomes, and factors like documentation methods or the qualifications of the healthcare provider do not have a direct impact on the test's validity.

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