SPECIMEN COLLECTION ACTUAL QUESTIONS AND ANSWERS 2025 WITH COMPLETE EXPLANATIONS.

SPECIMEN COLLECTION ACTUAL QUESTIONS AND ANSWERS 2025 WITH COMPLETE EXPLANATIONS. After bacteria are cultured from a midstream urine specimen, what is accomplished by sensitivity testing? THE ANSWER: - Determines which antibiotic agent is most effective in killing the bacteria EXPLANATION: Sensitivity testing of a bacterial culture determines which antibiotic the bacteria are most vulnerable (sensitive) to and therefore which agent is likely to be the most effective in killing them. What can the nurse do to help ensure an accurate result when collecting a midstream urine sample for a patient who is menstruating? THE ANSWER: - Make a note on the lab slip that the patient is menstruating. EXPLANATION: The nurse would make a note on the lab slip that the patient is menstruating, to alert the lab to the possible source of any blood detected in the specimen. Which statement might the nurse make to nursing assistive personnel (NAP) assigned to collect a midstream urine specimen from a patient with signs of a urinary tract infection? THE ANSWER: - "Be sure to maintain aseptic technique." EXPLANATION: The nurse would show the NAP how to keep the container sterile. Which statement might the nurse make to nursing assistive personnel (NAP) in order to help ensure reliable results of culture and sensitivity testing of a midstream urine specimen? THE ANSWER: - "Please get the specimen to the lab within 20 minutes." EXPLANATION: The nurse is likely to give this instruction to the NAP, because the specimen must be delivered to the lab within 20 minutes of collection. Doing so ensures that the reliability of the specimen is not compromised. What is the most important action the nurse can take to ensure that a midstream urine specimen does not become contaminated? THE ANSWER: - Ensure that the patient's perineum has been cleansed before the specimen is obtained. EXPLANATION: Cleansing the perineum before obtaining the midstream urine specimen helps ensure that the specimen does not become contaminated during collection. What is the initial step in preparing a fecal occult blood test? THE ANSWER: - Determine the patient's ability to help obtain a sample. EXPLANATION: Completing this action will determine the extent of the nurse's involvement in collecting the required sample. The nurse has delegated to nursing assistive personnel (NAP) the task of performing fecal occult blood tests on the stool of a patient with a history of positive results. Which instruction is most relevant to performing this test in this particular patient? THE ANSWER: - "Save the stool sample so that I can retest it if it is positive." EXPLANATION: The nurse is likely to give NAP this instruction, because any sample from which NAP obtains a positive result must be retested. Which instruction to nursing assistive personnel (NAP) is most relevant to the proper performance of a fecal occult blood test using a Hem occult slide? THE ANSWER: - "Remember to take samples from two different areas of the specimen." EXPLANATION: This is the most relevant instruction, because stool samples must be taken from two different areas and placed on the slide. Which statement indicates proper interpretation of the results of a positive fecal occult blood test THE ANSWER: - "Because it was positive, the patient must be asked when he or she last ate red meat." EXPLANATION: This statement indicates the nurse's awareness that a positive result does not necessarily indicate gastrointestinal bleeding. Which of the following nursing actions addresses the risk for infection related to fecal occult blood testing? THE ANSWER: - Wearing clean gloves while testing EXPLANATION: Wearing clean gloves is the most effective way to minimize the risk for infection. What is the initial step in preparing to perform a gastric occult blood test for a patient with recurrent vomiting? THE ANSWER: - Review the medications the patient is currently taking. EXPLANATION: Reviewing possible causes of the patient's recurrent vomiting is the most appropriate first step. Anticoagulants increase the risk of gastrointestinal (GI) tract bleeding, even from minor mucosal trauma, and long-term use of steroids, nonsteroidal anti-inflammatory drugs (NSAIDs), and acetylsalicylic acid (aspirin) can irritate the mucosa Why might the nurse delegate to nursing assistive personnel (NAP) the skill of performing a gastric occult blood test for a patient who has vomited? THE ANSWER: - This skill may be delegated if performed on vomited stomach contents. EXPLANATION: The skill of performing a Gastro cult test may be delegated to NAP only if the specimen is taken from stomach contents the patient has vomited. For example, NAP may obtain a specimen from the contents of the patient's emesis basin . Which statement best illustrates the nurse's understanding of the role of nursing assistive personnel (NAP) in carrying out a gastric occult blood test for a patient with a low hemoglobin and hematocrit? THE ANSWER: - "The next time the patient vomits, please test it for occult blood." EXPLANATION: This statement reflects the nurse's understanding that NAP may perform the test only on emesis Which statement best illustrates correct interpretation of a positive gastric occult blood test? THE ANSWER: - "If the test sample turns blue, it is positive for blood." EXPLANATION: This statement indicates an understanding that the sample is positive for blood if any traces of blue appear after 60 seconds. Which nursing action addresses the risk for infection related to gastric occult blood testing? THE ANSWER: - Ensuring appropriate hand hygiene before and after testing EXPLANATION: Ensuring appropriate hand hygiene is the most effective way of minimizing the risk for infection. Why might the collection of a sputum specimen be delayed up to 2 hours? THE ANSWER: - The patient has just finished eating lunch. EXPLANATION: Specimen collection must be postponed for 1 to 2 hours after eating or the administration of a tube feeding, so the procedure would have to be delayed if the patient has just finished having lunch Which criterion makes it appropriate for the nurse to delegate to nursing assistive personnel (NAP) the skill of collecting a sputum specimen? THE ANSWER: - The patient can produce the specimen by coughing. EXPLANATION: The skill of collecting a sputum specimen may be delegated only if the specimen is produced by the noninvasive means of expectoration (the patient's coughing). What is the role of nursing assistive personnel (NAP) when a sputum specimen is collected by means of nasotracheal suctioning? THE ANSWER: - Transporting the specimen to the lab EXPLANATION: The nurse may delegate to NAP the task of transporting the sputum specimen to the lab. Which action would help to ensure that the results of a suctioned sputum specimen culture are reliable? THE ANSWER: - Refrigerating the specimen until it can be taken to the lab EXPLANATION: Refrigerating the specimen until it can be transported to the lab will help to ensure reliable results. Which action by the nurse would most effectively reduce the patient's risk for injury when collecting a sputum specimen by means of nasotracheal suctioning? THE ANSWER: - Lubricating the catheter with sterile water