Author Question: After noticing an older man's extremities are cool and the cardiac monitor is showing a heart rate ... (Read 55 times)

mspears3 · **on:** Jul 11, 2018

After noticing an older man's extremities are cool and the cardiac monitor is showing a heart rate of 120 bpm, the nurse determines that these findings warrant further investigation.

Rank the pa-tient' parameters the nurse should examine to assess cardiac output in order of importance, be-ginning with the first assessment the nurse should complete. A. Hypoxemia B. Hypotension C. Irregular rhythm D. Low urine output

Question 2

The nurse notices that an older female nursing home resident is not eating and that her heart rate is faster than as usual. Which should the nurse do to eliminate pneumonia as a potential cause of the change in her status?

a. Obtain a specimen for aerobic blood cultures.
b. Send the resident for a chest x-ray exam promptly.
c. Analyze sputum for color, texture, and volume.
d. Compare tympanic temperature to the baseline.

stanleka1 · **Reply #1 on:** Jul 11, 2018

Answer to Question 1

A, C, B, D
The nurse assesses the SaO2 because airway and breathing are the two most basic human needs on Maslow's Hierarchy of Human Needs. Assessing the SaO2 is also the first step for this indi-vidual because hypoxemia can explain the cool extremities and tachycardia with an adequate cardiac output. The nurse then examines the heart's rhythm; with adequate oxygenation, the cool extremities and increased heart rate can be explained by a low cardiac output as a result of dys-rhythmia; the heart becomes an ineffective pump when it beats too quickly, too slowly, or in an irregular pattern. Next, the nurse examines the blood pressure; hypotension as a result of low cardiac output and with adequate oxygen and a regular heart rhythm can explain the cool extrem-ities and tachycardia as the body tries to compensate by shunting blood to the vital organs and increasing the heart rate. Finally, the nurse examines the urine output to assess renal perfusion. With adequate oxygenation and a regular heart rhythm, urine output will drop with a low cardiac output because it decreases renal perfusion. The kidneys need a minimum systolic blood pressure of 80 mm Hg to produce urine.

Answer to Question 2

C

Feedback
A Incorrect. Sputum cultures are indicated to assess a resident for pneumonia; blood cultures are likely to show no growth unless the resident has severe sepsis.
B Incorrect. A chest x-ray study is a nonsensitive, nonspecific diagnostic tool for determining the presence of pneumonia in an older adult.
C Correct. Sputum is a sensitive and specific clinical indicator of pneumonia for older adults in nursing homes. If pneumonia is causing this resident's anorexia and tachycardia, the sputum should be cloudy, colored, and thick, especially if the resident is dehydrated, indicating an infection.
D Incorrect. Fever can be a late indicator of infection for an older adult.