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Difficulty: MediumPhysiological Adaptation

A nurse is monitoring an adult client who is receiving intravenous antibiotics for acute pyelonephritis. Which assessment finding provides the earliest clinical indication that the client is developing septic shock?

  1. Warm, flushed skin and a widening pulse pressureAnswer
  2. B
    Cool, clammy extremities and a narrowing pulse pressure
  3. C
    A sustained decrease in mean arterial pressure (MAP) to 55 mm Hg
  4. D
    Arterial blood gas (ABG) results indicating primary respiratory acidosis

Answer

Warm, flushed skin and a widening pulse pressure
Septic shock initially presents in a hyperdynamic ('warm') phase characterized by massive peripheral vasodilation induced by systemic inflammation. This physiological adaptation attempts to maintain cardiac output, resulting in warm, flushed skin and a widening pulse pressure. Recognizing this early phase is critical for immediate intervention before the client progresses to decompensated 'cold' shock.

Step-by-Step Solution

1
Identify the primary clinical risk for a client with severe pyelonephritis.
The client is at high risk for gram-negative sepsis and subsequent septic shock.
Severe bacterial infections can trigger a systemic inflammatory response.
2
Differentiate the pathophysiology of early septic shock from other forms of shock.
Unlike hypovolemic or cardiogenic shock (which cause immediate vasoconstriction), early septic shock is distributive and causes massive peripheral vasodilation.
Endotoxins trigger the release of vasoactive mediators, compromising vascular tone.
3
Determine the corresponding clinical signs of this early vasodilatory phase.
The vasodilation creates a hyperdynamic state, manifesting clinically as warm, flushed skin, bounding pulses, and a widening pulse pressure.
These are the earliest indicators before cardiovascular failure leads to profound hypotension and cold extremities.

Key Concept

Early indicators of distributive (septic) shock
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Topics

Physiological Adaptation

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