The nurse is caring for a client who has hemorrhaged postoperatively and is in an early stage of shock. Which cardiopulmonary symptoms are most indicative of progressive hypovolemic shock?
Narrowed pulse pressure, presence of 3+ femoral pulses, apneic episodes.
Widening pulse pressure, muffled heart sounds, presence of atrial gallop.
Increased heart rate, lowered systolic reading, peripheral extremity mottling.
Irregular heart rate, elevated diastolic reading, increased respiratory rate.
The Correct Answer is C
A. Narrowed pulse pressure, presence of 3+ femoral pulses, apneic episodes. Narrowed pulse pressure is consistent with hypovolemic shock, but 3+ femoral pulses are not expected, as shock leads to weak, thready pulses due to reduced perfusion. Apneic episodes typically occur in the late stages of shock, not in the early or progressive stages.
B. Widening pulse pressure, muffled heart sounds, presence of atrial gallop. A widening pulse pressure and muffled heart sounds are more indicative of cardiac tamponade, not hypovolemic shock. Hypovolemic shock is characterized by a narrowing pulse pressure due to a drop in systolic blood pressure while diastolic pressure remains relatively stable.
C. Increased heart rate, lowered systolic reading, peripheral extremity mottling. Tachycardia is an early compensatory response to hypovolemia as the body attempts to maintain cardiac output. As shock progresses, systolic blood pressure drops due to inadequate circulating volume. Peripheral extremity mottling occurs as the body shunts blood to vital organs, reducing perfusion to the skin. These signs are characteristic of progressive hypovolemic shock.
D. Irregular heart rate, elevated diastolic reading, increased respiratory rate. An irregular heart rate is not a primary indicator of hypovolemic shock. While respiratory rate increases in response to decreased oxygen delivery, an elevated diastolic reading is uncommon, as diastolic pressure tends to stay stable or decrease slightly with ongoing hypovolemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Explanation
Answer:
Potential Condition:
Acute Adrenal Crisis
- The client has a history of Addison’s disease (chronic steroid use) and recent illness with vomiting, leading to decreased oral intake and medication noncompliance.
- Symptoms such as hypotension (80/50 mmHg), tachycardia (115 bpm), confusion, nausea, vomiting, and abdominal pain are classic signs of acute adrenal insufficiency.
Actions to Take:
Bolus Intravenous Fluids
- Fluid resuscitation with 0.9% normal saline is critical to restore intravascular volume and correct hypotension due to adrenal insufficiency.
Check Blood Glucose
- Hypoglycemia is a common complication of adrenal crisis due to cortisol deficiency, requiring close monitoring and possible glucose administration.
Parameters to Monitor:
Blood Pressure
- Hypotension is a hallmark of adrenal crisis and must be monitored closely to assess response to fluid resuscitation and steroid therapy.
Electrolytes
- Clients with adrenal crisis often have hyponatremia and hyperkalemia due to aldosterone deficiency, requiring frequent electrolyte monitoring.
Incorrect Choices:
Potential Conditions:
- Ketoacidosis: More common in diabetes, presents with high blood glucose and ketonuria.
- Diabetes Insipidus: Causes polyuria and dehydration but lacks hypotension and hyperkalemia.
- Myxedema: Linked to hypothyroidism, causing bradycardia and hypothermia, not hypotension and hyperkalemia.
Actions to Take:
- Hold hydrocortisone dose: Steroid replacement is necessary, not withholding it.
- Collect urine for a urinalysis: Not a priority; adrenal crisis is diagnosed via history, symptoms, and labs.
- Change intravenous fluids to 0.45%: Hypotension requires 0.9% normal saline, not hypotonic fluids.
Parameters to Monitor:
- Urine output: Useful but less critical than blood pressure and electrolytes in adrenal crisis.
- Thyroid stimulating hormone: Relevant for hypothyroidism, not adrenal insufficiency.
- Heart rate: Tachycardia is expected but is not the most critical indicator of improvement.
Correct Answer is C
Explanation
A. Temperature. While temperature monitoring is important in septic shock to assess infection control, it is not an indicator of dopamine's effectiveness. Dopamine primarily affects renal perfusion and blood pressure, not body temperature regulation.
B. Heart sounds. Dopamine is a vasopressor and inotropic agent, but it does not directly impact heart sounds. While it can increase myocardial contractility, assessing blood pressure and perfusion parameters is more relevant in evaluating its therapeutic effects.
C. Urinary output. Low-dose dopamine (1-5 mcg/kg/min) primarily acts as a dopaminergic agonist, increasing renal blood flow and urine output by dilating renal arteries. In septic shock, maintaining adequate kidney perfusion is critical to prevent acute kidney injury (AKI). A therapeutic response to dopamine would be seen as improved urinary output (≥ 30 mL/hr), indicating effective renal perfusion.
D. Pupil response. Dopamine does not directly affect pupil size or reactivity. Pupil assessment is more relevant in neurological evaluations, not in monitoring the effects of dopamine in septic shock.
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