Why do we care what current anti-HTN meds they are on during the pre-anesthesia eval?
Continuing Beta blockade = good thing, d/c beta blockade get rebound HTN, not a good thing. But if the patient is on some of these meds, be mindful of degree of beta blocker, can’t compensate for acute blood loss, can’t increase HR.
Meds alpha 2 agonist may also produce sedation which is additive to anesthesia. (clonidine)
Diuretics, unless K+ sparing, may be hypokalemic and if on something that regulates RAAS may be hyperkalemia.
Combo of beta blocker and ACE-I or ARB are more likely to be labile intra-op. sometimes ACE-I & ARB are held day of surgery, but need heightened awareness and be ready to treat.