title: Trends in costs of percutaneous transluminal coronary angioplasty.
abstract: OBJECTIVE
  To evaluate recent trends in the cost of percutaneous transluminal coronary angioplasty (PTCA), particularly the impact of newer technology and changing patient profile.
  
  
  METHODS
  Retrospective study with a 6-month follow up.
  
  
  METHODS
  We compared the data on two groups of 100 consecutive patients admitted for elective PTCA at Yale-New Haven Hospital in 1995 and 1996. Hospital records, cineangiograms, and hospital cost accounting system were reviewed, and 6-month clinical outcomes were obtained from telephone interviews and medical chart review.
  
  
  RESULTS
  Demographic and clinical characteristics did not differ between the 1995 and 1996 groups of patients, nor was a difference detected in in-hospital and 6-month clinical outcomes between 1995 and 1996. Angiographic features of treated lesions were different between the two groups, with a significantly higher frequency of type C and totally occluded lesions in 1996 (p = 0.002 and p = 0.04, respectively). The total hospital costs were higher in 1996 compared with 1995 ($11,799 +/- $6189 vs $10,087 +/- $5608; p = 0.04). This difference persisted after adjustment for changes in patient population. The major factor responsible for escalating costs was a 45% increase in catheterization laboratory costs ($8575 +/- $4524 in 1996 vs $5916 +/- $3030 in 1995; P < 0.0001). In contrast, the noncatheterization costs decreased substantially during this period, largely as a result of an approximately 33% decrease in length of stay (3.75 +/- 2.66 days in 1995 vs 2.57 +/- 1.99 days in 1996; P = 0.0005). In a multiple linear regression model, the most important determinants of cost were lesion characteristics, stent use, and radiographic contrast volume.
  
  
  CONCLUSIONS
  Despite cost reduction efforts, the costs of PTCA are rising because of increased consumption of resources in the catheterization laboratory.
authors.affiliation: Yale-New Haven Hospital Center for Outcomes Research and Evaluation, CT, USA.
authors.forename: A
authors.initials: A
authors.lastname: Heiat
authors.forename: J A
authors.initials: JA
authors.lastname: Mattera
authors.forename: G A
authors.initials: GA
authors.lastname: Henry
authors.forename: Y T
authors.initials: YT
authors.lastname: Chen
authors.forename: H M
authors.initials: HM
authors.lastname: Krumholz
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000191:economics* / Q000706:statistics & numerical data; D003237:Connecticut; D003363:Cost Control; D003625:Data Collection; D005260:Female; D017721:Hospital Costs / Q000706:statistics & numerical data* / Q000639:trends; D006785:Hospitals, University / Q000191:economics; D006801:Humans; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000379:methods; D012189:Retrospective Studies; D013673:Technology Assessment, Biomedical / Q000191:economics*; D014600:Utilization Review