To the Editor:—
Since the report (203, Jan 22, 1968, adv p 23) of our paper on our coronary unit we have received several requests about the details of its relatively low cost. The equipment we used was provided by the Sanborn Division of the Hewlett Packard Company. For the period which our study covered, we operated with the minimum of equipment. Each of three beds had an oscilloscope costing $501.50 and heart rate meter with light alarm costing $701.50 making a total cost for the three beds of 3 × $1,203= $3,609. The crash cart equipment consisted of the car itself ($199), a synchronized direct current defibrillator ($1,307), an oscilloscope ($501.50), an internal-external pacemaker ($279), and an electrocardiograph machine $695 making a total of $2,981. We also needed a cable ($42) and an extension cord ($11.55). A battery operated fixed rate pacemaker, a catheter, and a few small items