A nurse is assessing a client who is in skeletal traction for a fractured left tibia. The nurse should identify that which of the following findings indicates altered tissue perfusion of the affected extremity?

- Capillary refill time is a test that measures how quickly the blood returns to the tissues after pressure is applied and released on a nailbed or a fingertip. It is an indicator of peripheral circulation and tissue perfusion.
- To perform the capillary refill test, the examiner should press firmly on the nailbed or fingertip for a few seconds, then release the pressure and observe how long it takes for the normal color to return. The normal capillary refill time is less than 2 seconds .
- In the photo, the practical nurse (PN) applies and then releases pressure to a client's fingernail. Normal nail color returns in 2 seconds, which indicates a normal capillary refill time and adequate peripheral circulation. This is a normal and expected finding that does not require any further action, except for documentation.
- Therefore, option D is the correct answer, as it reflects the appropriate and standard nursing practice of documenting any assessment findings in the client's chart. Option D also implies that the PN does not need to report, observe, or repeat anything else related to the capillary refill test, as it was done correctly and yielded normal results.

- Options A, B, and C are incorrect answers, as they do not reflect the appropriate or necessary actions for the PN to take after performing a normal capillary refill test.
Option A is incorrect because there are no abnormal findings to report to the charge nurse, as the capillary refill time was normal.
Option B is incorrect because blanching of the nailbed is what happens when pressure is applied, not when
it is released, and it is not an abnormal finding.
Option C is incorrect because repeating the process with a different nailbed is not necessary, as the capillary refill time was normal on the first nailbed.

An antibiotic that can cause nephrotoxicity is an antibiotic that can damage the kidneys, which are the organs that filter the blood and remove waste products and excess fluid from the body. Some examples of nephrotoxic antibiotics are aminoglycosides, vancomycin, amphotericin B, and sulfonamides.

Serum creatinine is a laboratory value that measures the amount of creatinine in the blood. Creatinine is a waste product that is produced by the breakdown of muscle tissue and is normally excreted by the kidneys. A high serum creatinine level indicates that the kidneys are not functioning properly and are unable to filter out the creatinine from the blood.

Before administering an antibiotic that can cause nephrotoxicity, it is important for the practical nurse (PN) to review the serum creatinine level of the client, as it reflects the kidney function and the risk of nephrotoxicity. A normal serum creatinine level ranges from 0.6 to 1.2 mg/dL for men and 0.5 to 1.1 mg/dL for women. If the serum creatinine level is elevated, it may indicate that the client has impaired kidney function or is developing nephrotoxicity from the antibiotic. In this case, the PN should notify the primary healthcare provider and monitor the client for signs and symptoms of nephrotoxicity, such as decreased urine output, edema, hypertension, or electrolyte imbalances .