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.
No lifting the affected arm over your head on the side the pacemaker was put in for 2 weeks. No lifting or pushing more than 10 pounds for 6 weeks. No driving for 72 hours. Keep area dry for 48 hours, then you may shower but do not scrub the area. No submerging or swimming until a scar is formed.