Patients after myocard infarction who undergo homely rehab post stationary are divided into two groups of 10 patients each. The patients of group A undergo home monitoring for 4 weeks with the MeDiNa Homebox and afterwards 4 weeks without home monitoring. Group B starts vice versa, without home monitoring first and then undergoes home monitoring for 4 weeks (cross over,controlled intra-individually). During home monitoring with the MeDiNa Homebox patients measure vital parameters (weight, blood pressure, ECG (by chest strap including micro sensors), pulse and activity (also by chest strap including accelerometer) several times a day. The pseudonomized data which are transferred via the MeDiNa Homebox- Tablet PC to the MeDiNa eHealth Internet Portal (UMTS, HSDPA) to which the responsible authorized medicines will have access will be evaluated descriptively.