The side lengths of a right triangle form a so-called Pythagorean triple. A triangle that is not a right triangle is sometimes called an oblique triangle. Special cases of the right triangle include the isosceles right triangle (middle figure) and 30-60-90 triangle (right figure).
The first pacemaker was implanted on 8th October 1958 in a 43 year old man called Arne Larsson with complete heart block and Stokes-Adams attacks. Technological innovations between 1973 and 1980 rendered obsolete the reliable pacemaker of 1970.
Follow activity restrictions and recommendations from your healthcare professional. Allow about eight weeks for your pacemaker to settle firmly in place. During this time, avoid sudden, jerky or violent actions that will cause your arm to pull away from your body. Car, train or airplane trips should pose no danger. Be physically active every day.