NHA PRACTICE EXAM| Updated 2025 Questions and Answers| Verified

NHA PRACTICE EXAM| Updated 2025 Questions and Answers| Verified Describe the appropriate site for an intramuscular injection in a child under the age of 2. The vastus lateralis muscle is the preferred site for intramuscular injections in children under 2 because it is well-developed and avoids major nerves and blood vessels. Explain the correct order of draw for a routine venipuncture and why it is important. The correct order of draw is Light Blue, Red, Lavender. This prevents contamination of additives between tubes, which can interfere with test results. What is the primary function of the precordial leads in an EKG? The precordial leads (V1-V6) provide a view of the heart's electrical activity in the horizontal plane, helping to identify abnormalities such as ischemia or infarction in the heart’s anterior, lateral, or septal walls. How do you calculate the heart rate on an EKG strip using the 1500 method? To calculate the heart rate using the 1500 method, count the number of small squares between two R-waves and divide 1500 by this number. This gives the heart rate in beats per minute. What is the correct angle of insertion for a subcutaneous injection, and why is this important? 2 The correct angle for a subcutaneous injection is 45 degrees (90 degrees if using a shorter needle), ensuring the medication is delivered into the fatty tissue for proper absorption. Describe the process of performing a capillary puncture on an infant. A capillary puncture on an infant is typically performed on the heel. The lateral or medial plantar surface is used to avoid damaging nerves or bone. The site is warmed, cleaned, and punctured with a lancet. Explain the purpose of centrifuging blood samples and what might happen if this step is skipped. Centrifuging separates the components of the blood (plasma/serum, red blood cells, and platelets). Skipping centrifugation could result in inaccurate test results, especially for tests requiring serum or plasma. What steps should be taken if a patient experiences syncope during venipuncture? If a patient faints, immediately remove the needle, lower the patient to a supine position, and ensure they have an open airway. Monitor their condition and provide any necessary follow-up care. Define the term "universal precautions" and give an example of how they are applied in a healthcare setting. Universal precautions are infection control measures used to prevent the transmission of bloodborne pathogens. An example is wearing gloves when handling any bodily fluids or performing procedures like venipuncture. 3 What is the difference between aseptic and sterile techniques, and when is each used? Aseptic technique involves practices to reduce the risk of infection (e.g., handwashing, disinfecting surfaces) and is used in everyday patient care. Sterile technique involves completely eliminating microorganisms and is used during invasive procedures such as surgeries. Describe the steps involved in verifying the accuracy of medical coding for insurance claims. To verify medical coding accuracy, review the patient’s medical records, cross-check the diagnosis and procedure codes with current coding manuals (ICD-10, CPT), and ensure all services are properly documented and justified. Explain the purpose of informed consent in the healthcare setting. Informed consent ensures that a patient understands the risks, benefits, and alternatives of a procedure or treatment before agreeing to it. It is a legal requirement to protect patient