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Neurogenic shock is a haemodynamic phenomenon that can occur with lesions above T6 and is characterised by hypotension, bradycardia and vasodilation. This is caused by loss of sympathetic outflow below the level of the SCI and can last up to 6 weeks post-injury.
Neurogenic shock is a critical condition that results from the dysregulation of the autonomic nervous system following spinal cord injury, especially in the cervical and upper thoracic vertebrae above the T6 level, as a result of traumatic events.
With spinal shock, your muscles are limp and you don’t have your reflexes after a spinal cord injury. Neurogenic shock vs. hypovolemic shock. If you have neurogenic shock, you have a slow heart rhythm. If you have hypovolemic shock, you have a fast heart rhythm.
Neurogenic shock is a component of spinal shock that refers to the hemodynamic instability commonly seen in these patients. Neurogenic shock is characterized by hypotension, bradycardia, and hypothermia secondary to sympathetic-parasympathetic dysfunction or imbalance.
The patient’s vital signs are consistent with neurogenic shock. Spinal shock is not a true form of shock. It refers to the flaccid areflexia that may occur after spinal cord injury, and may last hours to weeks. It may be thought of as ‘concussion’ of the spinal cord and resolves as soft tissue swelling improves. Priapism may be present.
what is spinal shock? Spinal shock refers to reversible impairment in spinal cord function occurring within hours of injury. This shouldn't be confused with neurogenic shock (which is a distinct entity, as discussed further below ).
Spinal shock occurs in phases (I–IV) that are temporally distributed over a period of weeks to months, whereas neurogenic shock tends to have sudden onset that requires more urgent management. Table 3 outlines the key differences between spinal and neurogenic shock.
Spinal shock refers to the spinal cord impairment below the level of injury, including paralysis, loss of reflexes, anal sphincter tone, bowel and bladder control, as well as persistent penile erection (priapism) that can occur following a spinal cord trauma.
The term “spinal shock” applies to all phenomena surrounding physiologic or anatomic transection of the spinal cord that results in temporary loss or depression of all or most spinal reflex activity below the level of the injury.
Key Points. Definition: Neurogenic shock arises from the disruption of sympathetic control due to spinal cord injury, particularly at the cervical and upper thoracic levels. Recognition and...