All are true about thiopentone except: (A) Na2CO3 is a preservative, (B) contraindicated in porphyria, (C) Agent of choice in shock, (D) Has cerebroprotective action
Answer is C. In situations where the baroreceptor response will be blunted or absent (eg, hypovolemia, congestive hea failure, b-adrenergic blockade), cardiac output and aerial blood pressure may fall dramatically due to uncompensated peripheral pooling of blood and direct myocardial depression. So, sodium thiopental is contraindicated in shock. Ref: Morgan & Mikhail's clinical anesthesiology 6e