My 57 year old sister went into cardiac arrest on June 21; 2018.she was on full life support for 6 days. She was released on July 5 and tomorrow is her first visit with the cardiologist since her release. Of course she is on a lot of medication. We are taking her blood pressure at 9:00 A.M. and 6:00 p.m. her blood pressure for the last two days has been 117/63 116/67 and 112/64 with a heart rate between 67- 79. Is this to low?