The nurse, caring for a mechanically ventilated patient, suspects the patient is developing a low cardiac output even though the blood pressure is within normal limits
The nurse realizes the discrepancy in assessment findings could be because of 1. compensation with a heart rate of 108 beats per minute.
2. reabsorption of fluid in the renal tubules.
3. reduced glomerulofiltration rate.
4. hemoconcentration.
1
Rationale: A normal blood pressure frequently is maintained in patients receiving positive pressure ventilation through the compensatory mechanisms of increased heart rate and increased systemic vascular resistance. There is no evidence to suggest reabsorption of fluid is occurring in the renal tubules or that there is a reduction in the patient's glomerulofiltration rate since there is no mention of current urine output. There is also not enough information to determine if the patient is experiencing hemoconcentration.
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