which of the following statements best describes substance p

NCLEX-RN

NCLEX RN Exam Prep

1. Which of the following statements best describes substance P?

A. Substance P decreases a client's sensitivity to pain
B. Substance P levels are drawn before administration of narcotic analgesics
C. Substance P is found in the brain and is responsible for pain control and management of depression
D. Substance P is found in the dorsal horn of the spinal column

Correct answer: D

Rationale: Substance P is a neurotransmitter found in the brain and the dorsal horn of the spinal column, not just in the brain. It is associated with pain transmission and modulation. Substance P is known to cause inflammation, edema, and pain. While it plays a role in pain perception, it does not decrease a client's sensitivity to pain (Choice A), nor are its levels typically drawn before administering narcotic analgesics (Choice B). Although substance P is involved in pain control, it is not responsible for managing depression (Choice C). Therefore, the correct statement is that substance P is found in the dorsal horn of the spinal column.

2. A client's intake and output are being calculated by a nurse. During the last shift, the client consumed � cup of gelatin, a skinless chicken breast, 1 cup of green beans, and 300 cc of water. The client also urinated 250 cc and had 2 bowel movements. What is this client's intake and output for this shift?

A. 420 cc intake, 250 cc output
B. 300 cc intake, 250 cc output
C. 550 cc intake, 550 cc output
D. 300 cc intake, 550 cc output

Correct answer: A

Rationale: The correct answer is 420 cc intake and 250 cc output for this shift. To calculate the intake, � cup of gelatin (approximately 120 cc) and 300 cc of water should be added together, resulting in 420 cc. Food intake like the chicken breast and green beans is not converted to cc's but may be documented for hospital protocol. Output includes urine (250 cc in this case) and other forms like vomit, diarrhea, or gastric suction. Bowel movements are not converted to cc's, but the nurse may need to document the number of stools passed. Choices B, C, and D are incorrect because they do not accurately reflect the intake and output calculations based on the information provided.

3. After receiving change-of-shift report, which patient should the nurse assess first?

A. A patient with pneumonia who has crackles in the right lung base
B. A patient with possible lung cancer who has just returned after bronchoscopy
C. A patient with hemoptysis and a 16-mm induration with tuberculin skin testing
D. A patient with chronic obstructive pulmonary disease (COPD) and pulmonary function testing (PFT) that indicates low forced vital capacity

Correct answer: B

Rationale: The correct answer is the patient with possible lung cancer who has just returned after bronchoscopy. After bronchoscopy, the patient may have decreased cough and gag reflexes, necessitating immediate assessment for airway patency to prevent potential complications. The other patients do not exhibit urgent clinical manifestations or have undergone recent procedures that require immediate attention. Therefore, they can be assessed after ensuring the safety and stability of the patient who has just returned after bronchoscopy.

4. The nurse is assessing the vital signs of a 3-year-old patient who appears to have an irregular respiratory pattern. How would the nurse assess this child's respirations?

A. Respirations should be counted for 1 full minute.
B. Child's pulse and respirations should be simultaneously checked for 30 seconds and then multiplied by 2.
C. Child's respirations should be checked for a minimum of 5 minutes to identify any variations in his or her respiratory pattern.
D. Patient's respirations should be counted for 15 seconds and then multiplied by 4.

Correct answer: A

Rationale: To accurately assess a child's respiratory pattern, the nurse should count respirations for a full minute. This duration provides a comprehensive view of the child's breathing pattern, ensuring abnormalities are not missed. Counting for only 30 seconds may not capture irregularities effectively. Checking respirations for 5 minutes is excessive and unnecessary for a routine assessment. Counting for 15 seconds and multiplying by 4 is not as precise as a full-minute count. Pulse and respirations should not be checked simultaneously; instead, the nurse should count respirations unobtrusively while appearing to take the child's pulse. Therefore, the correct approach is to count the child's respirations for 1 full minute to obtain an accurate assessment.

5. What is the first aid for frostbite?

A. Running cold water over the affected area. Warm or hot water will shock the area and cause more tissue damage.
B. Run warm water over the area to rapidly rewarm the affected area.
C. Run hot water over the area to warm the area as quickly as possible.
D. Cover the area with a blanket, using a heating pad if the blanket isn't warm enough.

Correct answer: A

Rationale: First aid for frostbite involves running cold water over the affected area. It is important to avoid warm or hot water as it can shock the area and cause further tissue damage. Warm water should not be used to rapidly rewarm the affected area. Similarly, hot water should also be avoided as it can warm the area too quickly and potentially cause harm. Covering the area with a blanket and using a heating pad may not be effective and can even lead to more damage. Seeking medical assistance is crucial if the tissue appears necrotic to prevent further complications.