The nurse is providing medications to increase a patient's ...

[tfester]

The nurse is providing medications to increase a patient's systemic vascular resistance. At which point will the nurse know that the patient has adequate tissue perfusion?
 
  1. Mean arterial pressure reaches 60.
  2. Mean arterial pressure reaches 90.
  3. Blood pressure reaches 120/80 mmHg.
  4. Urine output is 10 mL per hour.

Question 2

A patient has an estimated blood loss of 2 liters and a mean arterial pressure ranging between 30 and 40 mmHg. If this patient's hemodynamic status is not corrected, what should the nurse realize can occur?
 
  1. failure of sodium-potassium pump
  2. cells shrinking
  3. full and bounding peripheral pulses
  4. metabolic alkalosis

[thall411]

Answer to Question 1

Correct Answer: 1

A mean arterial pressure of 60 mmHg is required to maintain adequate perfusion to the brain, heart, and kidneys. A mean arterial pressure of 90 is considered within normal limits. A blood pressure of 120/80 mmHg is considered normal. A urine output of 10 mL per hour would not indicate adequate renal perfusion.

Answer to Question 2

Correct Answer: 1

With a blood loss of two liters and a mean arterial pressure below 60 mmHg, the body cells switch from aerobic to anaerobic metabolism. The lactic acid formed as a by-product of anaerobic metabolism contributes to an acidotic state at the cellular level. Adenosine triphosphate, the source of cellular energy, is produced inefficiently. Lacking energy, the sodium-potassium pump fails. Potassium moves out of the cells while sodium and water move inward. As this process continues, the cells swell, not shrink. Peripheral pulses may not be palpable. The body develops acidosis, not alkalosis.

[tfester]

Correct answers!

[thall411]

Great! Please up vote