70 year old pt CHF, ESRD on a vent with dyspnea , b/p 70/30 currently on comfort care only. Dr ordered ativan 4mg/ morphine 4 mg IVP . Due to the difficulty in breathing I gave the morphine dose but was leery of giving the high dose of ativan also. I as afraid of pushing him over the edge with such a low bp. I realize the vent would breath for him but was nervous giving both meds at the same time. Was I wrong in feeling this way? Is this a normal practice with comfort care only pts?