4.2 Article

Troponin T monitoring to detect myocardial injury after noncardiac surgery: a cost-consequence analysis

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CANADIAN JOURNAL OF SURGERY
卷 61, 期 3, 页码 185-194

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CMA-CANADIAN MEDICAL ASSOC
DOI: 10.1503/cjs.010217

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资金

  1. Canadian Institutes of Health Research (Ottawa, Ontario, Canada)
  2. Heart and Stroke Foundation of Ontario (Toronto, Ontario, Canada)
  3. Academic Health Science Centre Alternative Funding Plan Innovation Fund grant (Toronto, Ontario, Canada)
  4. Population Health Research Institute grant (Hamilton, Ontario, Canada)
  5. Clarity Research Group grant
  6. Surgical Associates Research Grant, Department of Surgery, McMaster University (Hamilton, Ontario, Canada)
  7. Hamilton Health Sciences New Investigator Fund grant (Hamilton, Ontario, Canada)
  8. Hamilton Health Sciences grant (Hamilton, Ontario, Canada)
  9. Ontario Ministry of Resource and Innovation grant (Toronto, Ontario, Canada)
  10. Stryker Canada (Waterdown, Ontario, Canada)
  11. Department of Anesthesia, McMaster University (Hamilton, Ontario, Canada)
  12. Department of Medicine, Saint Joseph's Healthcare (Hamilton, Ontario, Canada)
  13. Father Sean O'Sullivan Research Centre (Hamilton, Ontario, Canada)
  14. Department of Medicine, McMaster University (Hamilton, Ontario, Canada)
  15. Roche Diagnostics Global Office (Basel, Switzerland)
  16. Hamilton Health Sciences Summer Studentships (Hamilton, Ontario, Canada)
  17. Department of Health Research Methods, Evidence, and Impact grant, McMaster University (Hamilton, Ontario, Canada)
  18. Division of Cardiology grant, McMaster University (Hamilton, Ontario, Canada)
  19. Canadian Network and Centre for Trials Internationally grant (Hamilton, Ontario, Canada)
  20. Winnipeg Health Sciences Foundation Operating Grant (Winnipeg, Manitoba, Canada)
  21. Department of Surgery Research Grant, University of Manitoba (Winnipeg, Manitoba, Canada) [2]
  22. Diagnostic Services of Manitoba Research Grant (Winnipeg, Manitoba, Canada)
  23. Manitoba Medical Services Foundation grant (Winnipeg, Manitoba, Canada)
  24. Manitoba Health Research Council grant (Winnipeg, Manitoba, Canada)
  25. Faculty of Dentistry Operational Fund grant, University of Manitoba (Winnipeg, Manitoba, Canada)
  26. (Department of Anesthesia and Perioperative Medicine) grant, University of Manitoba (Winnipeg, Manitoba, Canada)
  27. University Medical Group Start-up Fund, Department of Surgery, University of Manitoba (Winnipeg, Manitoba, Canada)
  28. Fellowship for prospective researchers, Swiss National Science Foundation (Bern, Switzerland)
  29. National Institute for Health Research [RP_2014-04-022, CS/08/08/17] Funding Source: researchfish

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Background Myocardial injury after noncardiac surgery (MINS) is a mostly asymptomatic condition that is strongly associated with 30-day mortality; however, it remains mostly undetected without systematic troponin T monitoring. We evaluated the cost and consequences of postoperative troponin T monitoring to detect MINS. Methods We conducted a model-based cost-consequence analysis to compare the impact of routine troponin T monitoring versus standard care (troponin T measurement triggered by ischemic symptoms) on the incidence of MINS detection. Model inputs were based on Canadian patients enrolled in the Vascular Events in Noncardiac Surgery Patients Cohort Evaluation (VISION) study, which enrolled patients aged 45 years or older undergoing inpatient noncardiac surgery. We conducted probability analyses with 10 000 iterations and extensive sensitivity analyses. Results The data were based on 6021 patients (48% men, mean age 65 [standard deviation 12] yr). The 30-day mortality rate for MINS was 9.6%. We determined the incremental cost to avoid missing a MINS event as $1632 (2015 Canadian dollars). The cost-effectiveness of troponin monitoring was higher in patient subgroups at higher risk for MINS, e.g., those aged 65 years or more, or with a history of atherosclerosis or diabetes ($1309). Conclusion The costs associated with a troponin T monitoring program to detect MINS were moderate. Based on the estimated incremental cost per health gain, implementation of postoperative troponin T monitoring seems appealing, particularly in patients at high risk for MINS. Contexte Les lesions myocardiques apres chirurgie non cardiaque (CNC) sont majoritairement asymptomatiques et fortement associees au risque de mortalite dans les 30 jours; toutefois, dans la plupart des cas, elles ne sont pas detectees en l'absence d'une surveillance systematique de la troponine T. Nous avons evalue les couts et les consequences d'une telle surveillance pour detecter les lesions myocardiques apres CNC. Methodes Nous avons mene une analyse cout-consequence modelisee pour comparer la surveillance systematique de la troponine T aux soins habituels seuls (mesure de la troponine T seulement s'il y a presence de symptomes d'ischemie) sur la frequence de detection de lesions myocardiques apres CNC. Les donnees ayant servi a l'analyse provenaient des patients canadiens ayant participe a l'etude de cohorte VISION, qui visait a evaluer les complications vasculaires chez les patients de 45 ans et plus ayant subi une CNC. Nous avons mene des analyses de probabilite avec 10 000 iterations et des analyses de sensibilite approfondies. Resultats Les donnees portaient sur 6021 patients (48 % du sexe masculin; age moyen de 65 ans [ecart-type de 12 ans]). Le taux de mortalite dans les 30 jours associe a une lesion myocardique apres CNC etait de 9,6 %. Nous avons determine que le cout marginal de la detection de la presence d'une lesion par surveillance de la troponine T etait de 1632 $ (dollars canadiens en 2015). Le rapport cout-efficacite etait plus bas pour les sous-groupes de patients a risque eleve de lesion myocardique apres CNC, comme les patients de 65 ans et plus ou ceux ayant des antecedents d'atherosclerose ou de diabete (1309 $), que pour leurs pairs. Conclusion Les couts associes a un programme de surveillance de la troponine T pour detecter les lesions myocardiques apres CNC etaient moderes. Le cout marginal estime par gain de sante indique que la mise en oeuvre de ce type de programme pourrait etre une option interessante, surtout pour les patients a risque eleve de lesion myocardique apres CNC.

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