Question 1

A timed urine collection can be used for which of the following? (Select all that apply.)

Accepted Answer

Timed urine collections are used to measure substances like glucose and adrenocorticosteroids over a specific period to assess their excretion rates.

Question 2

What should the nurse do after obtaining a sample for an arterial blood gas (ABG)?

Accepted Answer

After obtaining an ABG sample, the nurse should maintain pressure over the site for 3 to 5 minutes to prevent bleeding and hematoma formation.

Question 3

_______________ organisms grow in superficial wounds exposed to the air.

Accepted Answer

Aerobic organisms require oxygen to grow and thrive, making them suitable for superficial wounds exposed to the air.

Question 4

When blood specimens are drawn,which of the following statements is true?

Accepted Answer

Some specimens have special collection requirements before or after specimen collection,for example,for lactic acid levels,do not use a tourniquet.For cryoglobulin levels,use pre-warmed test tubes.For ammonia and ionized calcium levels,place the tube in ice for delivery to the laboratory.For vitamin levels,avoid exposure of the test tube to light.

Question 5

The nurse is preparing to perform a venipuncture on a patient.Which of the following is an appropriate action for the nurse to take?

Accepted Answer

Do not keep a tourniquet on the patient longer than 1 minute.Prolonged tourniquet application causes stasis,localized acidemia,and hemoconcentration.Palpate the distal pulse (e.g. ,brachial)below the tourniquet.If the pulse is not palpable,reapply the tourniquet more loosely.Ask the patient to open and close the fist several times,finally leaving the fist clenched.Instruct the patient to avoid vigorous opening and closing of the fist.Palpate for a firm vein that rebounds;a patent,healthy vein is elastic and rebounds on palpation.

Question 6

Hemoccult testing helps reveal blood that is visually undetectable.This test is a useful diagnostic tool for which of the following conditions? (Select all that apply.)

Accepted Answer

The answer of Hemoccult testing helps reveal blood that is...

Question 7

When performing a venipuncture,the nurse should

Accepted Answer

Placing the thumb below the site and pulling the skin taut helps stabilize the vein and makes needle insertion easier and more accurate.

Question 8

An appropriate technique for the nurse to implement when preparing for a venipuncture is to

Accepted Answer

The tourniquet should be tied in a way that it can be easily removed to ensure quick release after the venipuncture is completed.

Question 9

An appropriate technique for the nurse to use when culturing wound drainage that is suspected to contain anaerobic bacteria is to

Accepted Answer

Anaerobic bacteria prefer to reside in deep tissues or cavities where there is limited oxygen. Aspirating 5 to 10 mL of exudate from a deep cavity wound is the appropriate technique for culturing wound drainage that is suspected to contain anaerobic bacteria. Using older secretions for the specimen or adding exudate from the skin to the wound specimen may affect the accuracy of the culture. Swabbing in a back-and-forth motion across the wound may introduce more oxygen into the specimen, which could lead to inaccurate results since oxygen exposure influences the growth of anaerobic bacteria.

Question 10

The patient is diagnosed with suspected bacteremia.The physician has prescribed blood cultures from two different sites.The patient is complaining of chills and has an elevated temperature.What action should the nurse take in the presence of these symptoms?

Accepted Answer

Blood cultures should be drawn as ordered to identify the causative organism of the suspected bacteremia, especially when the patient is symptomatic with chills and fever.

Question 11

When collecting specimens,the nurse should (Select all that apply.)

Accepted Answer

Nurses should wear gloves and perform hand hygiene to maintain infection control, handle excretions discreetly to maintain patient dignity, explain procedures to ensure patient understanding and cooperation, and allow patients to collect their own urine specimens when appropriate to promote comfort and privacy.

Question 12

An appropriate technique for the nurse to implement when obtaining an arterial blood gas (ABG)specimen is to

Accepted Answer

The correct technique for obtaining an ABG specimen involves inserting the needle at a 45-degree angle to the skin to access the artery properly.

Question 13

The nurse is drawing blood from a patient to determine the blood alcohol level.Which step is an appropriate action for the nurse to take?

Accepted Answer

If drawing a sample for a blood alcohol level or blood culture,use only an antiseptic swab,not an alcohol swab.Do not keep a tourniquet on the patient longer than 1 minute.

Question 14

Which of the following is the site of choice for obtaining samples for an arterial blood gas (ABG)?

Accepted Answer

The radial artery is the most commonly used site for obtaining samples for an arterial blood gas (ABG) due to its accessibility and low risk of complications. The brachial artery and femoral artery can also be used but may carry a higher risk of complications such as bleeding or infection. The popliteal artery is not commonly used for ABG sampling.

Question 15

The least traumatic method of obtaining a blood specimen is

Accepted Answer

Capillary puncture is the least traumatic method as it involves a small prick on the skin, usually on a fingertip or heel, and is less invasive compared to arterial or venous punctures.

Question 16

A patient is to have a venipuncture to obtain a blood sample to check ammonia levels.What should the nurse do when given this information?

Accepted Answer

Ammonia levels in blood samples can degrade quickly at room temperature, so the sample should be placed on ice immediately after collection to preserve its integrity until it reaches the laboratory.

Question 17

When teaching about the procedure for capillary puncture,the nurse instructs a patient to

Accepted Answer

Clean the site with an antiseptic swab,and allow it to dry completely.Alcohol left on the skin can cause hemolysis of the sample.Hold the finger to be punctured in a dependent position while gently massaging the finger toward the puncture site to increase blood flow to the area before puncture.Select the lateral side of the finger;be sure to avoid the central top of the finger,which has a more dense nerve supply.

Question 18

The nurse is caring for a patient who has had a craniotomy.The patient appears to need endotracheal suctioning.The nurse is aware that this can be of concern because suctioning can cause which of the following? (Select all that apply.)

Accepted Answer

The answer of The nurse is caring for a patient...

Question 19

When obtaining a venipuncture sample for a blood culture,the nurse should

Accepted Answer

Using two different sites to draw samples reduces the risk of contamination and increases the accuracy of the culture results. A is incorrect because needles should not be recapped due to the risk of needlestick injuries. B is incorrect because shaking the culture bottles can cause hemolysis and affect the test results. D is incorrect because both the aerobic and anaerobic culture bottles should be inoculated simultaneously.

Question 20

When obtaining laboratory specimens,the nurse needs to be aware that (Select all that apply.)

Accepted Answer

The nurse should recognize that specimen collection may cause anxiety,embarrassment,and/or discomfort.Cultural considerations are important when collecting specimens and performing diagnostic procedures.Culture and beliefs may affect a patient's response and willingness to participate in specimen collection.Use of a patient's room number is not an acceptable identifier,and the nurse should follow standard precautions when collecting specimens of blood or other body fluids.

Quiz 9: Specimen Collection