COMEDK 2007 MCQ Answer 135

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The correct answer is B

Blood pressure decreases during maintenance anaesthesia in relation to the depth
of anaesthesia. That is, blood pressure is inversely related to the ISOFLURANE
concentration. Provided there are no other complicating factors this is probably
due to peripheral vasodilation.

ISOFLURANE is a powerful systemic and coronary arterial dilator. The effect on
systemic arterial pressure is easily controlled in the normal healthy patient
and has been used specifically as a means of inducing hypotension. However, the
phenomenon of "coronary steal" means that ISOFLURANE should be used with caution in patients with coronary artery disease.

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