PTCA catheters become less costly.
D015906:Angioplasty, Balloon, Coronary / Q000191:economics / Q000295:instrumentation*; D017721:Hospital Costs / Q000706:statistics & numerical data / Q000639:trends*; D008421:Materials Management, Hospital / Q000191:economics / Q000458:organization & administration; D017008:Negotiating; D013525:Surgical Instruments / Q000191:economics*; D014481:United States