Many people assume that pacemakers prolong life and keep people's hearts beating after death. Pacemakers generally improve quality of life in people with certain cardiac conditions but are not resuscitative devices(unless it is a pacemaker with a defibrillator). Also, many people are not dependant totally on the pacemaker, so it may not even be functioning most of the time.
The maximum daily dose is 80 mg. For the treatment of obsessive-compulsive disorder in adolescents and higher weight children, 7 years of age and older, the usual recommended Prozac dosage is 20 to 60 mg per day with an initial dosage of 10 mg per day.
I've had depression for 30 years and Prozac 20mg worked for me up until I hit 50. Perhaps it was because I'm pre-menopausal or because I'd taken the same drug, at the same dose for so many years. I went to the doctor and tried several other drugs.