A nurse assesses a client who experienced a spinal cord injury at the T5 level 20 minutes ago. Which assessment finding would the nurse correlate with neurogenic shock?
Explanation & Rationale
Neurogenic shock is a distributive form of shock that occurs after spinal cord injury, especially above the T6 level, due to loss of sympathetic nervous system tone. This leads to unopposed parasympathetic activity, resulting in bradycardia, hypotension, and warm, dry skin due to vasodilation. Early recognition is critical because it can rapidly progress to cardiovascular instability. Assessment focuses on identifying hallmark signs of autonomic dysfunction following spinal trauma. A. A blood pressure of 90/56 may be seen in shock states, but it is not specific to neurogenic shock alone. Spinal cord injury can cause hypotension; however, hypotension without bradycardia could also indicate hypovolemic or other types of shock. Neurogenic shock is characterized by both hypotension and bradycardia due to loss of sympathetic tone. B. A blood pressure of 175/96 indicates hypertension, which is not consistent with neurogenic shock. Instead, this finding suggests intact or excessive sympathetic stimulation, which is opposite of what occurs in spinal cord injury–related autonomic failure. In early post–Spinal cord injury neurogenic shock, vasodilation leads to low blood pressure, not elevated pressure. C. A heart rate of 34 is a hallmark finding of neurogenic shock due to unopposed parasympathetic (vagal) stimulation following loss of sympathetic input. In high-level spinal cord injury such as T5, disruption of sympathetic pathways leads to severe bradycardia along with hypotension. This is a classic indicator of neurogenic shock and requires immediate intervention. D. A heart rate of 112 indicates tachycardia, which is more commonly associated with hypovolemic or septic shock rather than neurogenic shock. In neurogenic shock related to Spinal cord injury, sympathetic loss prevents tachycardia from occurring, making bradycardia the expected finding. This does not match the pathophysiology of neurogenic shock.