Traditionally, the only problems involved with medical and surgical procedures have been those more or less directly related to medicine. With the recent development of rather complex procedures such as organ transplants, another type of problem has arisen, namely, the planning and management of the procedure. We believe that the planning and management problem will increase and become a limiting factor in the development of more complex procedures.
Computerized planning and management techniques are available to assist in the problem. Among these techniques is a procedure known originally as the critical path method (CPM).1 Another, similar technique was later devised which is somewhat more elaborate known as the program evaluation and review technique (PERT).2 The authors have attempted to evaluate these programs to see if they would be useful in the planning and managing of new and complex surgical procedures. In order to do this, we have applied