Question 64

Take a deep breath and then expectorate.

Instructing a patient to take a deep breath and then expectorate is crucial for obtaining a proper sputum specimen. This method ensures that the sample comes from deep within the lungs, which is essential for accurate diagnostic testing.

A) Collect the stool directly into a sterile container.

This option is incorrect as it pertains to stool collection, not sputum. Sputum specimens are required to be collected from the respiratory tract and not from the gastrointestinal system, making this option irrelevant to the question.

B) Discard the first urine of the day and collect for 24 hr.

This option is also incorrect because it describes a procedure for urine collection rather than sputum. Sputum collection requires different techniques focused on respiratory secretions, thus rendering this option irrelevant.

C) Aggressively swab the inside of the cheek.

This choice is incorrect as it suggests a method for oral sampling rather than for sputum. Collecting sputum requires the patient to expectorate mucus from the lungs, not to swab the cheeks, which does not yield a sputum sample.

D) Take a deep breath and then expectorate.

This option is correct, as it instructs the patient to take a deep breath and then expectorate, which helps to produce a sample from the lungs. This technique is essential for ensuring the sputum is representative of the respiratory tract.

Conclusion

The correct instruction for collecting a sputum specimen is to take a deep breath and then expectorate, as this method produces a sample that is rich in relevant respiratory secretions. All other options fail to address the correct procedure for obtaining a sputum sample, focusing instead on irrelevant collection methods for stool or urine. This highlights the importance of understanding the specific requirements for different types of biological specimens.