Features of neurogenic shock are –
Correct Answer: |Peripheral resistence | cardiac output
Description: NEUROGENIC SHOCK -,* Interruption of sympathetic vasomotor input after a high cervical spinal cord injury, *inadveent cephalad migration of spinal anesthesia, or * devastating head injury may result in neurogenic shock. In addition to aeriolar dilation, venodilation causes pooling in the venous system, which DECREASES VENOUS RETURN AND CARDIAC OUTPUT.. The extremities are often warm, in contrast to the usual sympathetic vasoconstriction-induced coolness in hypovolemic or cardiogenic shock. Treatment involves a simultaneous approach to the relative hypovolemia and to the loss of vasomotor tone. Excessive volumes of fluid may be required to restore normal hemodynamics if given alone. Once hemorrhage has been ruled out, norepinephrine or a pure a-adrenergic agent (phenylephrine) may be necessary to AUGMENT VASCULAR RESISTANCE. and maintain an adequate mean aerial pressure. ref:harrison&;s principles of internal medicine,ed 18,pg no 2639
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