Recurring characters in the first season consisted of John Orchard as Captain "Ugly John" Black, Timothy Brown as Captain "Spearchucker" Jones, William Christopher as First Lieutenant 'Father' John Patrick Mulcahy, the company chaplain (played by George Morgan in the pilot), and Jamie Farr as Corporal Maxwell Klinger.Several changes were made in the cast line up during the 11-year run.Ugly John and Spearchucker were dropped after the first season, while Klinger and Father Mulcahy were retained and became permanent cast members in, respectively, the fourth and fifth seasons.Rogers and Stevenson left the series at the end of the third season and were replaced in the fourth by, respectively, Mike Farrell as Captain B. Hunnicutt and Harry Morgan as Colonel Sherman Potter.the process is controlled by a hemodialysis machine that pumps blood, adds anticoagulants, regulates the purification process, and controls the mixing of the dialysis solution and its flow rate through the system.a patient typically receives three treatments per week, lasting from three to six hours each.Various types of Sherwood numbers are defined and studied.
the vascular access must allow sufficient blood flow and access as often as necessary, normally three times a week.
Two recurring characters—Allan Arbus as Major Sidney Freedman, a psychiatrist (called Milton Freedman in his first appearance) and Edward Winter as Colonel Sam Flagg (a Lieutenant Colonel, before the fourth season), CIA—were introduced in the second season.
Although not an immediate success, the popularity of M*A*S*H increased in its second season, when it ranked among the ten most-popular programs on prime time American television.
The regular cast originally consisted of Alan Alda as Captain Benjamin Franklin "Hawkeye" Pierce and Wayne Rogers as Captain "Trapper" John Mc Intyre, two surgeons; Mc Lean Stevenson as Lieutenant Colonel Henry Blake, a surgeon and the base commander; Loretta Swit as Major Margaret J.
"Hot Lips" Houlihan, the head nurse; Larry Linville as Major Frank Burns, another surgeon; and Gary Burghoff as Corporal Walter "Radar" O'Reilly, the company clerk.