The nurse is caring for a client with acute decompensated heart failure.
The client's hemodynamic monitoring shows a mean arterial pressure (MAP) of 55 mm Hg. What is the priority nursing intervention?
Administer a fluid bolus as ordered.
Prepare the client for intubation.
Position the client in high Fowler's position.
Start a norepinephrine infusion as ordered.
The Correct Answer is D
Managing acute decompensated heart failure requires understanding perfusion pressure and cardiovascular hemodynamics. Knowledge of mean arterial pressure and vasopressor pharmacology is necessary. The priority is maintaining vital organ perfusion when the MAP falls below critical thresholds required for cellular oxygenation.
Choice A rationale
Fluid boluses can exacerbate pulmonary edema in acute decompensated heart failure. While MAP is low, adding volume increases preload, which a failing left ventricle cannot pump, leading to further respiratory distress and worsening of the cardiac crisis.
Choice B rationale
Intubation addresses respiratory failure and oxygenation but does not directly correct the primary hemodynamic issue of low perfusion pressure. While it may become necessary, the immediate priority is restoring MAP to ensure coronary and renal perfusion.
Choice C rationale
High Fowler's position assists with oxygenation by reducing venous return and decreasing pulmonary congestion. However, in the presence of a dangerously low MAP of 55 mm Hg, this position may further decrease cerebral and systemic perfusion.
Choice D rationale
A MAP below 60 to 65 mm Hg indicates inadequate organ perfusion. Norepinephrine provides potent vasoconstriction and minimal inotropy, raising systemic vascular resistance to increase the MAP quickly, thereby protecting the brain, heart, and kidneys from ischemia..
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Determining priority assessments in hospice care requires applying Maslow's hierarchy and the nursing process. Understanding the medical diagnosis is foundational for anticipating physical needs, managing symptoms, and ensuring safety, which precedes addressing psychosocial, spiritual, or financial concerns during the initial admission phase.
Choice A rationale
Identifying the medical diagnosis is essential for clinical decision making and symptom management. It allows the nurse to anticipate complications, understand prognosis, and provide appropriate pharmacological interventions to ensure comfort, which is the primary goal of hospice.
Choice B rationale
While financial stability affects long term care planning, it is not the immediate clinical priority upon admission. Basic physiological needs and medical stability must be addressed before the nurse evaluates the client's insurance coverage or socioeconomic status.
Choice C rationale
Spiritual assessment is a core component of holistic hospice care, yet it follows physical stabilization. The nurse must first ensure the client is not in acute physical distress before exploring religious beliefs or existential concerns.
Choice D rationale
Assessing the support system is vital for planning home care and caregiver respite. However, without understanding the medical condition first, the nurse cannot accurately determine the level of support or specific skills the family needs.
Correct Answer is ["A","C","D","G"]
Explanation
Splenic rupture involves internal hemorrhage and peritoneal irritation. Assessing this requires understanding Kehr sign and signs of hypovolemic shock. Knowledge of hemodynamic parameters and abdominal symptoms is essential to identify occult bleeding and impending cardiovascular collapse following trauma.
Choice A rationale
Splenic injury causes blood to accumulate in the peritoneal cavity, leading to abdominal pain and distension. This irritation of the peritoneum is a hallmark sign of internal organ damage following blunt force trauma to the left side.
Choice B rationale
Headaches are not typically associated with splenic injury unless there is concurrent head trauma. While shock can cause lightheadedness, a primary headache is not a specific or supportive clinical indicator for an isolated splenic laceration or rupture.
Choice C rationale
Hypotension occurs as a result of significant internal bleeding and decreased circulating blood volume. Blood pressure falls below the normal systolic range of 90 to 120 mmHg as the body fails to compensate for acute blood loss.
Choice D rationale
Tachycardia is a compensatory mechanism where the heart rate increases above 100 beats per minute to maintain cardiac output during hemorrhage. It is often one of the earliest signs of volume depletion and internal splenic bleeding.
Choice E rationale
Polyuria, or excessive urination, is not a sign of splenic injury or hypovolemia. In fact, blood loss usually leads to oliguria, where urine output drops below 30 mL per hour as the kidneys conserve fluid and sodium.
Choice F rationale
Wide pulse pressure is often seen in conditions like aortic regurgitation or increased intracranial pressure. Splenic rupture causes hypovolemia, which typically results in a narrow pulse pressure as the systolic pressure falls and diastolic pressure stays.
Choice G rationale
Nausea is a common symptom of peritoneal irritation and the systemic response to acute internal bleeding. The presence of blood in the abdominal cavity can stimulate the vagus nerve and gastrointestinal distress, leading to vomiting or nausea.
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