The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
Influence of Hospital Procedural Volume on Care Process and Mortality for Patients Undergoing Elective Surgery for Mitral Regurgitation
Open accessAbstract
Background— Few studies have examined the procedural volume–outcome relationship for heart valve surgery. None have examined process of care factors that may be mediators of this association. Methods and Results— This was a retrospective review of outcomes for 13 614 patients having elective surgery for mitral regurgitation between 2000 and 2003 in 575 North American centers participating in the Society of Thoracic Surgeons National Cardiac Database. Hospital annual mitral valve volume varied widely from 22 cases per year in the lowest-volume quartile to 394 in the highest. Unadjusted mortality rates decreased from 3.08% in the lowest-volume category to 1.11% in the highest-volume category. The risk-adjusted odds ratio for mortality in the highest-volume category compared with the lowest was 0.48 (95% confidence interval 0.28 to 0.82). The rates of mitral valve repair increased from 47.7% in the lowest-volume quartile to 77.4% in high-volume hospitals ( P <0.0001). Similarly, the rates of bioprosthetic valve use for patients aged >65 years rose from 59% in the lowest-volume quartile to 75% in the highest-volume quartile ( P =0.0002). The association between volume and mortality was still significant but attenuated when the risk adjustment was modified to adjust for mitral valve repair versus replacement. Conclusions— Hospital procedural volume was associated with higher frequency of valve repair, higher frequency of prosthetic valve usage in elderly patients, and lower adjusted operative mortality. Differences in care process may contribute to improved outcomes in higher-volume centers.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Bonow, R. O., Carabello, B. A., Chatterjee, K., de Leon, A. C., Faxon, D. P., Freed, M. D., Gaasch, W. H., Lytle, B. W., Nishimura, R. A., O’Gara, P. T., et al. (2006) · Circulation · doi:10.1161/circulationaha.106.176857 · Cited by 8,495
Hospital Volume and Surgical Mortality in the United States
Birkmeyer, J. D., Siewers, A. E., Finlayson, E. V. A., Stukel, T. A., Lucas, F. L., Batista, I., Welch, H. G., & Wennberg, D. E. (2002) · New England Journal of Medicine · doi:10.1056/nejmsa012337 · Cited by 4,999
Surgeon Volume and Operative Mortality in the United States
Birkmeyer, J. D., Stukel, T. A., Siewers, A. E., Goodney, P. P., Wennberg, D. E., & Lucas, F. L. (2003) · New England Journal of Medicine · doi:10.1056/nejmsa035205 · Cited by 3,106
Halm, E. A., Lee, C., & Chassin, M. R. (2002) · Annals of Internal Medicine · doi:10.7326/0003-4819-137-6-200209170-00012 · Cited by 1,704
Surgeon volume and operative mortality in the United States
Birkmeyer, J. D., Stukel, T. A., Siewers, A. E., Goodney, P. P., Wennberg, D. E., & Lucas, F. L. (2004) · ACC Current Journal Review · doi:10.1016/j.accreview.2003.12.065 · Cited by 1,113
Bonow, R. O., Carabello, B., de Leon, A. C., Edmunds, L. H., Fedderly, B. J., Freed, M. D., Gaasch, W. H., McKay, C. R., Nishimura, R. A., O’Gara, P. T., et al. (1998) · Circulation · doi:10.1161/01.cir.98.18.1949 · Cited by 1,034
Prediction of operative mortality after valve replacement surgery
Edwards, F. H., Peterson, E. D., Coombs, L. P., DeLong, E. R., Jamieson, W. R. E., Shroyer, A. L. W., & Grover, F. L. (2001) · Journal of the American College of Cardiology · doi:10.1016/s0735-1097(00)01202-x · Cited by 420
Self-citationThe STS National Database: current changes and challenges for the new millennium
Ferguson, T. B., Dziuban, S. W., Edwards, F. H., Eiken, M. C., Shroyer, A. L. W., Pairolero, P. C., Anderson, R. P., & Grover, F. L. (2000) · The Annals of Thoracic Surgery · doi:10.1016/s0003-4975(99)01538-6 · Cited by 243
Self-citationLong-Term (29 Years) Results of Reconstructive Surgery in Rheumatic Mitral Valve Insufficiency
Chauvaud, S., Fuzellier, J., Berrebi, A., Deloche, A., Fabiani, J., & Carpentier, A. (2001) · Circulation · doi:10.1161/hc37t1.094707 · Cited by 232
The volume-outcome relationship: from Luft to Leapfrog
Shahian, D. M., & Normand, S. T. (2003) · The Annals of Thoracic Surgery · doi:10.1016/s0003-4975(02)04308-4 · Cited by 228
Cited by
Otto, C. M., Nishimura, R. A., Bonow, R. O., Carabello, B. A., Erwin, J. P., Gentile, F., Jneid, H., Krieger, E. V., Mack, M., McLeod, C., et al. (2021) · Circulation · doi:10.1161/cir.0000000000000923 · Cited by 3,686
Guidelines on the management of valvular heart disease (version 2012)
Authors/Task Force Members, Vahanian, A., Alfieri, O., Andreotti, F., Antunes, M. J., Barón-Esquivias, G., Baumgartner, H., Borger, M. A., Carrel, T. P., De Bonis, M., et al. (2012) · European Heart Journal · doi:10.1093/eurheartj/ehs109 · Cited by 3,559
2014 AHA/ACC Guideline for the Management of Patients With Valvular Heart Disease
Nishimura, R. A., Otto, C. M., Bonow, R. O., Carabello, B. A., Erwin, J. P., Guyton, R. A., O’Gara, P. T., Ruiz, C. E., Skubas, N. J., Sorajja, P., et al. (2014) · Journal of the American College of Cardiology · doi:10.1016/j.jacc.2014.02.536 · Cited by 3,523
Otto, C. M., Nishimura, R. A., Bonow, R. O., Carabello, B. A., Erwin, J. P., Gentile, F., Jneid, H., Krieger, E. V., Mack, M., McLeod, C., et al. (2021) · Circulation · doi:10.1161/cir.0000000000000932 · Cited by 2,449
Suri, R. M., Vanoverschelde, J.-L., Grigioni, F., Schaff, H. V., Tribouilloy, C., Avierinos, J.-F., Barbieri, A., Pasquet, A., Huebner, M., Rusinaru, D., et al. (2013) · JAMA · doi:10.1001/jama.2013.8643 · Cited by 399
Metadata
- Authors
- Gammie, J. S., O’Brien, S. M., Griffith, B. P., Ferguson, T. B., & Peterson, E. D.
- Venue
- Circulation
- Published
- 2007-02-20
- Volume
- 115
- Issue
- 7
- Pages
- 881-887
- ISSN
- 0009-7322 (ISSN-L)
- 1524-4539
- OpenAlex
- W1965497413
- Cited by
- 296
- References
- 15
- FWCI
- 12.10
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Influence of Hospital Procedural Volume on Care Process and Mortality for Patients Undergoing Elective Surgery for Mitral Regurgitation. https://app.cochat.ai/papers/10.1161/circulationaha.106.634436
- The paper
- Gammie, J. S., O’Brien, S. M., Griffith, B. P., Ferguson, T. B., & Peterson, E. D. (2007). Influence of Hospital Procedural Volume on Care Process and Mortality for Patients Undergoing Elective Surgery for Mitral Regurgitation. Circulation. https://doi.org/10.1161/circulationaha.106.634436
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
