Overuse of preoperative cardiac stress testing in medicare patients undergoing elective noncardiac surgery

Kristin M. Sheffield, Patricia S. McAdams, Jaime Benarroch-Gampel, James Goodwin, Casey A. Boyd, Dong Zhang, Taylor S. Riall

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

OBJECTIVE: To determine the frequency and predictors of cardiac stress testing before elective noncardiac surgery in Medicare patients with no indications for cardiovascular evaluation. BACKGROUND: The American College of Cardiology/American Heart Association guidelines indicate that patients without class I (American Heart Association high risk) or class II cardiac conditions (clinical risk factors) should not undergo cardiac stress testing before elective noncardiac, nonvascular surgery. METHODS: We used 5% Medicare inpatient claims data (1996-2008) to identify patients aged ≥ 66 years who underwent elective general surgical, urological, or orthopedic procedures (N = 211,202). We examined the use of preoperative stress testing in the subset of patients with no diagnoses consistent with cardiac disease (N = 74,785). Bivariate and multivariate analyses were used to identify predictors of preoperative cardiac stress testing. RESULTS: Of the patients with no cardiac indications for preoperative stress testing, 3.75% (N = 2803) received stress testing in the 2 months before surgery. The rate of preoperative stress testing increased from 1.72% in 1996 to 6.44% in 2007 (P < 0.0001). A multivariate analysis adjusting for patient and hospital characteristics showed a significant increase in preoperative stress testing over time. Female sex [odds ratio (OR) 1.11; 95% CI: 1.02-1.21], presence of other comorbidities [OR 1.22; 95% confidence interval (CI): 1.09-1.35], high-risk procedure (OR 2.42; 95% CI: 2.04-2.89), and larger hospital size (OR 1.17; 95% CI: 1.03-1.32) were positive predictors of stress testing. Patients living in regions with greater Medicare expenditures (OR 1.24; 95% CI: 1.05-1.45) were also more likely to receive stress tests. CONCLUSIONS: In a 5% sample of Medicare claims data, 2803 patients underwent preoperative stress testing without any indications. When these results were applied to the entire Medicare population, we estimated that there are over 56,000 patients who underwent unnecessary preoperative stress testing. The rate of testing in patients without cardiac indications has increased significantly over time.

Original languageEnglish (US)
Pages (from-to)73-80
Number of pages8
JournalAnnals of Surgery
Volume257
Issue number1
DOIs
StatePublished - Jan 2013

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Medicare
Odds Ratio
Confidence Intervals
Urologic Surgical Procedures
Multivariate Analysis
Health Facility Size
Orthopedic Procedures
Sex Ratio
Health Expenditures
Exercise Test
Comorbidity
Inpatients
Heart Diseases
Guidelines

Keywords

  • bariatric surgery
  • GLP-1
  • insulin secretion
  • morbid obesity
  • Roux-en-Y Gastric Bypass

ASJC Scopus subject areas

  • Surgery

Cite this

Sheffield, K. M., McAdams, P. S., Benarroch-Gampel, J., Goodwin, J., Boyd, C. A., Zhang, D., & Riall, T. S. (2013). Overuse of preoperative cardiac stress testing in medicare patients undergoing elective noncardiac surgery. Annals of Surgery, 257(1), 73-80. https://doi.org/10.1097/SLA.0b013e31826bc2f4

Overuse of preoperative cardiac stress testing in medicare patients undergoing elective noncardiac surgery. / Sheffield, Kristin M.; McAdams, Patricia S.; Benarroch-Gampel, Jaime; Goodwin, James; Boyd, Casey A.; Zhang, Dong; Riall, Taylor S.

In: Annals of Surgery, Vol. 257, No. 1, 01.2013, p. 73-80.

Research output: Contribution to journalArticle

Sheffield, KM, McAdams, PS, Benarroch-Gampel, J, Goodwin, J, Boyd, CA, Zhang, D & Riall, TS 2013, 'Overuse of preoperative cardiac stress testing in medicare patients undergoing elective noncardiac surgery', Annals of Surgery, vol. 257, no. 1, pp. 73-80. https://doi.org/10.1097/SLA.0b013e31826bc2f4
Sheffield, Kristin M. ; McAdams, Patricia S. ; Benarroch-Gampel, Jaime ; Goodwin, James ; Boyd, Casey A. ; Zhang, Dong ; Riall, Taylor S. / Overuse of preoperative cardiac stress testing in medicare patients undergoing elective noncardiac surgery. In: Annals of Surgery. 2013 ; Vol. 257, No. 1. pp. 73-80.
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abstract = "OBJECTIVE: To determine the frequency and predictors of cardiac stress testing before elective noncardiac surgery in Medicare patients with no indications for cardiovascular evaluation. BACKGROUND: The American College of Cardiology/American Heart Association guidelines indicate that patients without class I (American Heart Association high risk) or class II cardiac conditions (clinical risk factors) should not undergo cardiac stress testing before elective noncardiac, nonvascular surgery. METHODS: We used 5{\%} Medicare inpatient claims data (1996-2008) to identify patients aged {\^a}‰¥ 66 years who underwent elective general surgical, urological, or orthopedic procedures (N = 211,202). We examined the use of preoperative stress testing in the subset of patients with no diagnoses consistent with cardiac disease (N = 74,785). Bivariate and multivariate analyses were used to identify predictors of preoperative cardiac stress testing. RESULTS: Of the patients with no cardiac indications for preoperative stress testing, 3.75{\%} (N = 2803) received stress testing in the 2 months before surgery. The rate of preoperative stress testing increased from 1.72{\%} in 1996 to 6.44{\%} in 2007 (P < 0.0001). A multivariate analysis adjusting for patient and hospital characteristics showed a significant increase in preoperative stress testing over time. Female sex [odds ratio (OR) 1.11; 95{\%} CI: 1.02-1.21], presence of other comorbidities [OR 1.22; 95{\%} confidence interval (CI): 1.09-1.35], high-risk procedure (OR 2.42; 95{\%} CI: 2.04-2.89), and larger hospital size (OR 1.17; 95{\%} CI: 1.03-1.32) were positive predictors of stress testing. Patients living in regions with greater Medicare expenditures (OR 1.24; 95{\%} CI: 1.05-1.45) were also more likely to receive stress tests. CONCLUSIONS: In a 5{\%} sample of Medicare claims data, 2803 patients underwent preoperative stress testing without any indications. When these results were applied to the entire Medicare population, we estimated that there are over 56,000 patients who underwent unnecessary preoperative stress testing. The rate of testing in patients without cardiac indications has increased significantly over time.",
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AU - Goodwin, James

AU - Boyd, Casey A.

AU - Zhang, Dong

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N2 - OBJECTIVE: To determine the frequency and predictors of cardiac stress testing before elective noncardiac surgery in Medicare patients with no indications for cardiovascular evaluation. BACKGROUND: The American College of Cardiology/American Heart Association guidelines indicate that patients without class I (American Heart Association high risk) or class II cardiac conditions (clinical risk factors) should not undergo cardiac stress testing before elective noncardiac, nonvascular surgery. METHODS: We used 5% Medicare inpatient claims data (1996-2008) to identify patients aged ≥ 66 years who underwent elective general surgical, urological, or orthopedic procedures (N = 211,202). We examined the use of preoperative stress testing in the subset of patients with no diagnoses consistent with cardiac disease (N = 74,785). Bivariate and multivariate analyses were used to identify predictors of preoperative cardiac stress testing. RESULTS: Of the patients with no cardiac indications for preoperative stress testing, 3.75% (N = 2803) received stress testing in the 2 months before surgery. The rate of preoperative stress testing increased from 1.72% in 1996 to 6.44% in 2007 (P < 0.0001). A multivariate analysis adjusting for patient and hospital characteristics showed a significant increase in preoperative stress testing over time. Female sex [odds ratio (OR) 1.11; 95% CI: 1.02-1.21], presence of other comorbidities [OR 1.22; 95% confidence interval (CI): 1.09-1.35], high-risk procedure (OR 2.42; 95% CI: 2.04-2.89), and larger hospital size (OR 1.17; 95% CI: 1.03-1.32) were positive predictors of stress testing. Patients living in regions with greater Medicare expenditures (OR 1.24; 95% CI: 1.05-1.45) were also more likely to receive stress tests. CONCLUSIONS: In a 5% sample of Medicare claims data, 2803 patients underwent preoperative stress testing without any indications. When these results were applied to the entire Medicare population, we estimated that there are over 56,000 patients who underwent unnecessary preoperative stress testing. The rate of testing in patients without cardiac indications has increased significantly over time.

AB - OBJECTIVE: To determine the frequency and predictors of cardiac stress testing before elective noncardiac surgery in Medicare patients with no indications for cardiovascular evaluation. BACKGROUND: The American College of Cardiology/American Heart Association guidelines indicate that patients without class I (American Heart Association high risk) or class II cardiac conditions (clinical risk factors) should not undergo cardiac stress testing before elective noncardiac, nonvascular surgery. METHODS: We used 5% Medicare inpatient claims data (1996-2008) to identify patients aged ≥ 66 years who underwent elective general surgical, urological, or orthopedic procedures (N = 211,202). We examined the use of preoperative stress testing in the subset of patients with no diagnoses consistent with cardiac disease (N = 74,785). Bivariate and multivariate analyses were used to identify predictors of preoperative cardiac stress testing. RESULTS: Of the patients with no cardiac indications for preoperative stress testing, 3.75% (N = 2803) received stress testing in the 2 months before surgery. The rate of preoperative stress testing increased from 1.72% in 1996 to 6.44% in 2007 (P < 0.0001). A multivariate analysis adjusting for patient and hospital characteristics showed a significant increase in preoperative stress testing over time. Female sex [odds ratio (OR) 1.11; 95% CI: 1.02-1.21], presence of other comorbidities [OR 1.22; 95% confidence interval (CI): 1.09-1.35], high-risk procedure (OR 2.42; 95% CI: 2.04-2.89), and larger hospital size (OR 1.17; 95% CI: 1.03-1.32) were positive predictors of stress testing. Patients living in regions with greater Medicare expenditures (OR 1.24; 95% CI: 1.05-1.45) were also more likely to receive stress tests. CONCLUSIONS: In a 5% sample of Medicare claims data, 2803 patients underwent preoperative stress testing without any indications. When these results were applied to the entire Medicare population, we estimated that there are over 56,000 patients who underwent unnecessary preoperative stress testing. The rate of testing in patients without cardiac indications has increased significantly over time.

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