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1. O'Connor GT, Plume SK, Olmstead EM, Coffin LH, Morton JR, Maloney CT, Nowicki ER, Tryzelaar JF, Hernandez F, Adrian L, Casey KJ, Soule DN, Marrin CAS, Nugent WC, Charlesworth DC, Clough R, Katz S, Leavitt BJ, Wennberg JE. A regional prospective study of in-hospital mortality associated with coronary artery bypass grafting. JAMA 1991;266(6):803-9.

2. Kasper JF, Plume SK, O'Connor GT. A methodology for QI in the coronary artery bypass grafting procedure involving comparative process analysis. QRB Qual Rev Bull 1992;18(4):129-33.

3. O'Connor GT, Plume SK, Olmstead EM, Coffin LH, Morton JR, Maloney CT, Nowicki ER, Levy DG, Tryzelaar JF, Hernandez F, Adrian L, Casey KJ, Bundy D, Soule DN, Marrin CAS, Nugent WC, Charlesworth DC, Clough R, Katz S, Leavitt BJ, Wennberg JE. Multivariate Prediction of in-hospital mortality associated with coronary artery bypass graft surgery. Circulation 1992;85:2110-18.

4. O'Connor GT, Morton JR, Diehl MJ, Olmstead EM, Coffin LH, Levy DG, Maloney CT, Plume SK, Nugent W, Malenka DJ, Hernandez F, Clough R, Birkmeyer J, Marrin CAS, Leavitt BJ. Differences between men and women in hospital mortality associated with coronary artery bypass graft surgery. Circulation 1993;88(5 Pt 1):2104-10.

5. O'Connor GT, Plume SK, Wennberg JE. Regional organization for outcomes research. Ann NY Acad Sci 1993;703:44-51.

6. Disch DL, O'Connor GT, Birkmeyer JD, Olmstead EM, Levy DG, Plume SK. Changes in patients undergoing coronary artery bypass grafting: 1987- 1990. Ann Thorac Surg 1994;57(2):416-23.

7. Birkmeyer JD, O'Connor GT, Quinton HB, Ricci MA, Morton JR, Leavitt BJ, Charlesworth DC, Hernandez F, McDaniel MD. The effect of peripheral vascular disease on in-hospital mortality rates with coronary artery bypass surgery. J Vasc Surg 1995;21(3):445-52.

8. Malenka DJ, O'Connor GT. A regional collaborative effort for CQI in cardiovascular disease. Jt Comm J Qual Improv 1995;21(11):627-33.

9. Birkmeyer JD, Quinton HB, O'Connor NJ, McDaniel MD, Leavitt BJ, Charlesworth DC, Hernandez F, Ricci MA, O'Connor GT. The effect of peripheral vascular disease on long-term mortality after coronary artery bypass surgery. Arch Surg 1996;131(3):316-21.

10. Malenka DJ. Indications, practice, and procedural outcomes of percutaneous transluminal coronary angioplasty in northern New England in the early 1990s. Am J Cardiol 1996;78(3):260-5.

11. Malenka DJ, O'Connor GT, Quinton H, Wennberg D, Robb JF, Shubrooks S, Kellett MA, Jr., Hearne MJ, Bradley WA, VerLee P. Differences in outcomes between women and men associated with percutaneous transluminal coronary angioplasty. A regional prospective study of 13,061 procedures. Circulation 1996;94(9 Suppl):II99-104.

12. O'Connor GT, Plume SK, Olmstead EM, Morton JR, Maloney CT, Nugent WC, Hernandez F, Jr., Clough R, Leavitt BJ, Coffin LH, Marrin CA, Wennberg D, Birkmeyer JD, Charlesworth DC, Malenka DJ, Quinton HB, Kasper JF. A regional intervention to improve the hospital mortality associated with coronary artery bypass graft surgery. JAMA 1996;275(11):841-6.

13. O'Connor NJ, Morton JR, Birkmeyer JD, Olmstead EM, O'Connor GT. Effect of coronary artery diameter in patients undergoing coronary bypass surgery. Circulation 1996;93(4):652-5.

14. Leavitt BJ, Olmstead EM, Plume SK, Charlesworth DC, Maislen EL, James TW, Baribeau YR, Quinn R, O'Connor GT. Use of the internal mammary artery graft in Northern New England. Circulation 1997;96(9 Suppl):II-32-6; discussion II-7.

15. O'Rourke DJ, Malenka DJ, Robb JF, Bradley WA, Kellett MA, Shubrooks S, Hearne M, Verlee P, Wennberg D, Vaitkus PT, O'Meara J, Ryan TJ, Jr., Hettleman B, Miller M, Quinton H, Sengupta A, O'Connor GT. Results of directional coronary atherectomy in Northern New England. Am J Cardiol 1997;79(11):1465-70.

16. Beggs VL, Willis SB, Maislen EL, Stokes TM, White D, Sanford M, Becker A, Barber S, Pawlow PC, Downs C. Patient education for discharge after coronary bypass surgery in the 1990s: are patients adequately prepared? J of Cardiovasc Nursing 1998;12(4):72-86.

17. Birkmeyer NJ, Charlesworth DC, Hernandez F, Leavitt BJ, Marrin CA, Morton JR, Olmstead EM, O'Connor GT. Obesity and risk of adverse outcomes associated with coronary artery bypass surgery. Circulation 1998;97(17):1689-94.

18. Dacey LJ, Munoz JJ, Baribeau YR, Johnson ER, Lahey SJ, Leavitt BJ, Quinn RD, Nugent WC, Birkmeyer JD, O'Connor GT. Reexploration for hemorrhage following coronary artery bypass grafting: incidence and risk factors. Arch of Surg 1998;133(4):442-7.

19. Malenka DJ, O'Connor GT. The Northern New England Cardiovascular Disease Study Group: a regional collaborative effort for continuous quality improvement in cardiovascular disease. Jt Comm J Qual Improv 1998;24(10):594-600.

20. McGrath PD, Wennberg DE, Malenka DJ, Kellett MA, Jr., Ryan TJ, Jr., O'Meara JR, Bradley WA, Hearne MJ, Hettleman B, Robb JF, Shubrooks S, VerLee P, Watkins MW, Lucas FL, O'Connor GT. Operator volume and outcomes in 12,998 percutaneous coronary interventions. J Am Coll Cardiol 1998;31(3):570-6.

21. O'Connor GT, Birkmeyer JD, Dacey LJ, Quinton HB, Marrin CA, Birkmeyer NJ, Morton JR, Leavitt BJ, Maloney CT, Hernandez F, Clough RA, Nugent WC, Olmstead EM, Charlesworth DC, Plume SK. Results of a regional study of modes of death associated with coronary artery bypass grafting. Ann Thorac Surg 1998;66(4):1323-8.

22. O'Connor GT, Malenka DJ. Learning from clinical practice. In: Yusuf S, ed. Evidence Based Cardiology. London: BMJ Books; 1998:133-44.

23. Ross C, O'Connor G, Kasper J. Improving outcomes of cardiac surgery: A Benchmarking Study by the Northern New England Cardiovascular Disease Study Group. In: Camp RC, ed. Global Cases in Benchmarking: Best Practices from Organizations Around the World. Milwaukee: ASQ Quality Press; 1998:341-56.

24. Wennberg D, Dickens J, Soule D, Kellett Jr M, Malenka D, Robb J, Ryan Jr T, Bradley W, Vaitkus P, Hearne M, O'Connor G, Hillman R. The relationship between the supply of cardiac catheterization laboratories, cardiologists and the use of invasive cardiac procedures in northern New England. J Health Svc Res Policy 1997;2(2)75-80.

26. Malenka DJ, McGrath PD, Wennberg DE, Ryan TJ, Jr., Kellett MA, Jr., Shubrooks SJ, Jr., Bradley WA, Hettlemen BD, Robb JF, Hearne MJ, Silver TM, Watkins MW, O'Meara JR, VerLee PN, O'Rourke DJ. The relationship between operator volume and outcomes after percutaneous coronary interventions in high volume hospitals in 1994-1996: the northern New England experience. J Am Coll Cardiol 1999;34(5):1471-80.

27. Malenka DJ, O'Rourke D, Miller MA, Hearne MJ, Shubrooks S, Kellett MA, Jr., Robb JF, O'Meara JR, VerLee P, Bradley WA, Wennberg D, Ryan T, Jr., Vaitkus PT, Hettleman B, Watkins MW, McGrath PD, O'Connor GT. Cause of in-hospital death in 12,232 consecutive patients undergoing percutaneous transluminal coronary angioplasty. Amer Heart J 1999;137(4 Pt 1):632-8.

28. McGrath PD, Malenka DJ, Wennberg DE, Shubrooks SJ, Jr., Bradley WA, Robb JF, Kellett MA, Jr., Ryan TJ, Jr., Hearne MJ, Hettleman B, O'Meara JR, VerLee P, Watkins MW, Piper WD, O'Connor GT. Changing outcomes in percutaneous coronary interventions: a study of 34,752 procedures in northern New England, 1990 to 1997. J Am Coll Cardiol 1999;34(3):674-80.

30. Munoz JJ, Birkmeyer NJ, Dacey LJ, Birkmeyer JD, Charlesworth DC, Johnson ER, Lahey SJ, Norotsky M, Quinn RD, Westbrook BM, O'Connor GT. Trends in rates of reexploration for hemorrhage after coronary artery bypass surgery. Ann Thorac Surg 1999;68(4):1321-5.

31. O'Connor GT, Malenka DJ, Quinton H, Robb JF, Kellett MA, Jr., Shubrooks S, Bradley WA, Hearne MJ, Watkins MW, Wennberg DE, Hettleman B, O'Rourke DJ, McGrath PD, Ryan T, Jr., VerLee P. Multivariate prediction of in-hospital mortality after percutaneous coronary interventions in 1994-1996. J Am Coll Cardiol 1999;34(3):681-91.

32. Wennberg DE, Malenka DJ, Sengupta A, Lucas FL, Vaitkus PT, Quinton H, O'Rourke D, Robb JF, Kellett MA, Jr., Shubrooks SJ, Jr., Bradley WA, Hearne MJ, Lee PV, O'Connor GT. Percutaneous transluminal coronary angioplasty in the elderly: epidemiology, clinical risk factors, and in-hospital outcomes. Amer Heart J 1999;137(4 Pt 1):639-45.

33. Birkmeyer NJ, Marrin CA, Morton JR, Leavitt BJ, Lahey SJ, Charlesworth DC, Hernandez F, Olmstead EM, O'Connor GT. Decreasing mortality for aortic and mitral valve surgery in Northern New England. Ann Thorac Surg 2000;70(2):432-7.

34. Braxton JH, Marrin CA, McGrath PD, Ross CS, Morton JR, Norotsky M, Charlesworth DC, Lahey SJ, Clough RA, O'Connor GT. Mediastinitis and long-term survival after coronary artery bypass graft surgery. Ann Thorac Surg 2000;70(6):2004-7.

35. Dacey LJ, Munoz JJ, Johnson ER, Leavitt BJ, Maloney CT, Morton JR, Olmstead EM, Birkmeyer JD, O'Connor GT. Effect of preoperative aspirin use on mortality in coronary artery bypass grafting patients. Ann Thorac Surg 2000;70(6):1986-90.

Liu JY, Birkmeyer NJ, Sanders JH, Morton JR, Henriques HF, Lahey SJ, Dow RW, Maloney C, DiScipio AW, Clough R, Leavitt BJ, O'Connor GT. Risks of morbidity and mortality in dialysis patients undergoing coronary artery bypass surgery. Circulation 2000; 102: 2973-2977.

36. Shubrooks SJ, Malenka DJ, Piper WD, Bradley WA, Watkins MW, Ryan TJ, Hettleman BD, VerLee PN, O'Meara JR, Robb JF, Kellett MA, Hearne MA, McGrath PD, Wennberg DE, O'Rourke DJ, Silver TM. Safety and efficacy of percutaneous coronary interventions performed immediately after diagnostic catheterization in northern New England and comparison with similar procedures performed later. Am J Cardiol 2000;86(1):41-5.

37. DeFoe GR, Ross CS, Olmstead EM, Surgenor SD, Fillinger MP, Groom RC, Forest RJ, Pieroni JW, Warren CS, Bogosian ME, Krumholz CF, Clark C, Clough RA, Weldner PW, Lahey SJ, Leavitt BJ, Marrin CA, Charlesworth DC, Marshall P, O'Connor GT. Lowest hematocrit on bypass and adverse outcomes associated with coronary artery bypass grafting. Ann Thorac Surg 2001;71(3):769-76.

38. Hernandez F, Cohn WE, Baribeau YR, Tryzelaar JF, Charlesworth DC, Clough RA, Klemperer JD, Morton JR, Westbrook BM, Olmstead EM, O'Connor GT. In-hospital outcomes of off-pump versus on-pump coronary artery bypass procedures: a multicenter experience. Ann Thorac Surg 2001;72(5):1528-33; discussion 33-4.

39. Leavitt BJ, O'Connor GT, Olmstead EM, Morton JR, Maloney CT, Dacey LJ, Hernandez F, Lahey SJ. Use of the internal mammary artery graft and in-hospital mortality and other adverse outcomes associated with coronary artery bypass surgery. Circulation 2001;103(4):507-12.

40. Niles NW, McGrath PD, Malenka D, Quinton H, Wennberg D, Shubrooks SJ, Tryzelaar JF, Clough R, Hearne MJ, Hernandez F, Jr., Watkins MW, O'Connor GT. Survival of patients with diabetes and multivessel coronary artery disease after surgical or percutaneous coronary revascularization: results of a large regional prospective study. J Am Coll Cardiol 2001;37(4):1008-15.

41. O'Rourke DJ, Malenka DJ, Olmstead EM, Quinton HB, Sanders JH, Jr., Lahey SJ, Norotsky M, Quinn RD, Baribeau YR, Hernandez F, Jr., Fillinger MP, O'Connor GT. Improved in-hospital mortality in women undergoing coronary artery bypass grafting. Ann Thorac Surg 2001;71(2):507-11.

42. Plume SK, O'Connor GT, Olmstead E. As originally published in 1994: Changes in patients undergoing coronary artery bypass grafting: 1987-1990. Updated in 2000. Ann Thorac Surg 2001;72(1):314-5.

43. Surgenor SD, O'Connor GT, Lahey SJ, Quinn R, Charlesworth DC, Dacey LJ, Clough RA, Leavitt BJ, Defoe GR, Fillinger M, Nugent WC. Predicting the risk of death from heart failure after coronary artery bypass graft surgery. Anesth Analg 2001;92(3):596-601.

44. Clough RA, Leavitt BJ, Morton JR, Plume SK, Hernandez F, Nugent W, Lahey SJ, Ross CS, O'Connor GT. The effect of comorbid illness on mortality outcomes in cardiac surgery. Arch Surg 2002;137(4):428-32; discussion 32-3.

45. Dacey LJ, Liu JY, Braxton JH, Weintraub RM, DeSimone J, Charlesworth DC, Lahey SJ, Ross CS, Hernandez F, Jr., Leavitt BJ, O'Connor GT. Long-term survival of dialysis patients after coronary bypass grafting. Ann Thorac Surg 2002;74(2):458-62; discussion 62-3.

46. DeFoe GR, O'Connor GT. Reply to the Editor Safety of Low Hematocrits During Cardiopulmonary Bypass. Ann Thorac Surg 2002;74(1):297.

47. Fillinger MP, Surgenor SD, Hartman GS, Clark C, Dodds TM, Rassias AJ, Paganelli WC, Marshall P, Johnson D, Kelly D, Galatis D, Olmstead EM, Ross CS, O'Connor GT. The association between heart rate and in-hospital mortality after coronary artery bypass graft surgery. Anesth Analg 2002;95(6):1483-8.

48. Malenka DJ, Wennberg DE, Quinton HA, O'Rourke DJ, McGrath PD, Shubrooks SJ, O'Connor GT, Ryan TJ, Robb JF, Kellett MA, Bradley WA, Hearne MA, VerLee PN, Watkins MW, Hettleman BD, Piper WD. Gender-related changes in the practice and outcomes of percutaneous coronary interventions in northern New England from 1994 to 1999. J Am Coll Cardiol 2002;40(12):2092-101.

49. Piper WD, Malenka DJ, Ryan TJ Jr, Shubrooks SJ Jr, O'Connor GT, Robb JF, Farrell KL, Corliss MS, Hearne MJ, Kellett MA Jr, Watkins MW, Bradley WA, Hettleman BD, Silver TM, McGrath PD, O'Meara JR, Wennberg DE. Predicting vascular complications in percutaneous coronary interventions. Am Heart J 2003;145(6):1022-9.

50. Dauerman HL, Ryan TJ Jr, Piper WD, Kellett MA, Shubrooks SJ, Robb JF, Hearne MJ, Watkins MW, Hettleman BD, Silver MT, Niles NW, Malenk DJ. Outcomes of percutaneous coronary intervention among elderly patients in cardiogenic shock: a multicenter, decade-long experience. J Invasive Cardiol 2003;15(7):380-4.

51. Baskett RJ, O'Connor GT, Hirsch GM, Ghali WA, Sabadosa K, Morton JR, Ross CS, Hernandez F, Nugent WC, Lahey SJ, Sisto DA, Dacey LJ, Klemperer JD, Helm RE, Maitland A. A multicenter comparison of intraaortic balloon pump utilization in isolated coronary artery bypass graft surgery. Ann Thorac Surg 2003;76(6):1988-92.

52. Charlesworth DC, Likosky DS, Marrin CA, Maloney CT, Quinton H, Morton JR, Leavitt BJ, Clough R, O'Connor GT. Development and Validation of a Prediction Model for Strokes Following Coronary Artery Bypass Grafting. Ann Thorac Surg 2003;76:436-43.

53. Dacey LJ, DeSimone J, Braxton JH, Leavitt BJ, Lahey SJ, Klemperer JD, Westbrook BM, Olmstead EM, O'Connor GT. Preoperative white blood cell count and mortality and morbidity after coronary artery bypass grafting. Ann Thorac Surg 2003;76(3):760-4.

54. DeFoe GR, Krumholz CF, DioDato CP, Ross CS, Olmstead EM, Groom RC, Pieroni JW, Forest RJ, O'Connor BR, Bogosian ME, Warren CS, O'Connor GT. Lowest core body temperature and adverse outcomes associated with coronary artery bypass surgery. Perfusion 2003;18(2):127-33.

55. Likosky DS, Leavitt BJ, Marrin CA, Malenka DJ, Reeves AG, Weintraub RM, Caplan LR, Baribeau YR, Charlesworth DC, Ross CS, Braxton JH, Hernandez F, Jr., O'Connor GT. Intra- and postoperative predictors of stroke after coronary artery bypass grafting. Ann Thorac Surg 2003;76(2):428-34; discussion 35.

56. Likosky DS, Marrin CA, Caplan LR, Baribeau YR, Morton JR, Weintraub RM, Hartman GS, Hernandez F, Jr., Braff SP, Charlesworth DC, Malenka DJ, Ross CS, O'Connor GT. Determination of etiologic mechanisms of strokes secondary to coronary artery bypass graft surgery. Stroke 2003;34(12):2830-4.

57. Nowicki ER, Weintraub RW, Birkmeyer NJ, Sanders JH, Dacey LJ, Lahey SJ, Leavitt B, Clough RA, Quinn RD, O'Connor G T. Mitral valve repair and replacement in northern New England. Am Heart J 2003;145(6):1058-62.

58. Groom RC, Likosky DJ, Forrest RJ, O'Connor G T, Morton JR, Ross CS, Clark C, Kramer R. A model for cardiopulmonary bypass redesign. Perfusion 2004;19(4):257-6.

59. Groom RC, Rassias AJ, Cormack JE, DeFoe GR, DioDato C, Krumholz CK, Forest RJ, Pieroni JW, O'Connor B, Warren CS, Olmstead EM, Ross CS, O'Connor GT. Highest core temperature during cardiopulmonary bypass and rate of mediastinitis. Perfusion 2004;19(2):119-25.

60. Likosky DS, Caplan LR, Weintraub RM, Hartman GS, Malenka DJ, Ross CS, Landis ES, Applebaum B, Braff SP, O'Connor G T. Intraoperative and Postoperative Variables Associated with Strokes Following Cardiac Surgery. Heart Surgery Forum 2004;7(4):205-10.

61. Braxton JH, Marrin CA, McGrath PD, Morton JR, Norotsky M, Charlesworth DC, Lahey SJ, Clough R, Ross CS, Olmstead EM, O'Connor G T. 10-year follow-up of patients with and without mediastinitis. Semin Thorac Cardiovasc Surg 2004;16(Spring):70-6.

62. Nowicki ER, Birkmeyer NJ, Weintraub RW, Leavitt BJ, Sanders JH, Dacey LJ, Clough RA, Quinn RD, Charlesworth DC, Sisto DA, Uhlig PN, Olmstead EM, O'Connor GT. Multivariable prediction of in-hospital mortality associated with aortic and mitral valve surgery in Northern New England. Ann Thorac Surg 2004;77(6):1966-77.

63. O'Rourke DJ, Quinton HB, Piper W, Hernandez F, Morton J, Hettleman B, Hearne M, Nugent W, O'Connor GT. Survival in patients with peripheral vascular disease after percutaneous coronary intervention and coronary artery bypass graft surgery. Ann Thoracic Surg 2004;78:466-70.

64. Leavitt BJ, Sheppard L, Maloney C, Clough RA, Braxton JH, Charlesworth DC, Weintraub RM, Hernandez F, Olmstead EM, Nugent WC, O'Connor GT, Ross CS. Effects of diabetes and associated conditions on long-term survival after coronary artery bypass graft surgery. Circulation 2004;110(11 Suppl 1):II41-II44.

65. Dacey LJ, Likosky DS, Leavitt BJ, Lahey SJ, Quinn RD, Hernandez F, Quinton HB, DeSimone JP, Ross CS, O'Connor GT. Perioperative Stroke and Long-term Survival After Coronary Bypass Graft Surgery. Ann Thorac Surg 2005;79:532-7.

66. Likosy DS, Roth RM, Saykin AJ, Eskey CJ, Ross CS, O'Connor GT. Neurologic Injury Associated with CABG Surgery: Outcomes, Mechanisms, and Opportunities for Improvement. Heart Surg Forum 2004;1103:7(6): E650-62.

67. Likosky DS, Groom RC, Clark C, Forest RJ, Kramer RS, Morton JR, Ross CS, Sabadosa KA, O'Connor GT. A Method for Identifying Mechanisms of Neurologic Injury from Cardiac Surgery. Heart Surg Forum 2004;1088:7(6): E348-52.

68. Baskett RJ, O'Connor GT, Hirsch GM, Ghali WA, Sabadosa KA, Morton JR, Ross CS, Hernandez F, Nugent WC, Lahey SJ, Sisto D, Dacey LJ, Klemperer JD, Helm RE, Maitland A. The preoperative intraaortic balloon pump in coronary bypass surgery: a lack of evidence of effectiveness. Am Heart J. 2005;150:E1122-7.

69. Likosky DS, Donegan DJ, Groom RC, Buchanan SA, Morton JR, Ross CS, O'Connor GT. Embolic activity subsequent to injection of the internal mammary artery with papaverine hydrochloride. Heart Surg Forum. 2005;8:E434-6.

70. Malenka DJ, Leavitt BJ, Hearne MJ, Robb JF, Baribeau YR, Ryan TJ Jr, Helm RE, Kellett MA, Dauerman HL, Dacey LJ, Silver MT, VerLee PN, Weldner PW, Hettleman BD, Olmstead EM, Piper WD, O'Connor GT. Comparing long-term survival of patients with multivessel coronary disease after CABG or PCI: analysis of BARI-like patients in northern New England. Circulation. 2005;112:I371-6.

71. Brown JR, Cochran RP, Dacey LJ, Ross CS, Kunzelman KS, Dunton RF, Braxton JH, Charlesworth DC, Clough RA, Helm RE, Leavitt BJ, MacKenzie TA, O'Connor GT. Perioperative increases in serum creatinine are predictive of increased 90-day mortality after coronary artery bypass graft surgery. Circulation. 2006;114:I409-13.

72. Leavitt BJ, Ross CS, Spence B, Surgenor SD, Olmstead EM, Clough RA, Charlesworth DC, Kramer RS, O'Connor GT. Long-term survival of patients with chronic obstructive pulmonary disease undergoing coronary artery bypass surgery. Circulation. 2006;114:I430-4.

73. Likosky DS, Nugent WC, Clough RA, Weldner PW, Quinton HB, Ross CS, O'Connor GT. Comparison of three measurements of cardiac surgery mortality for the Northern New England Cardiovascular Disease Study Group. Ann Thorac Surg. 2006;81:1393-5.

74. Surgenor SD, DeFoe GR, Fillinger MP, Likosky DS, Groom RC, Clark C, Helm RE, Kramer RS, Leavitt BJ, Klemperer JD, Krumholz CF, Westbrook BM, Galatis DJ, Frumiento C, Ross CS, Olmstead EM, O'Connor GT. Intraoperative red blood cell transfusion during coronary artery bypass graft surgery increases the risk of postoperative low-output heart failure. Circulation. 2006;114:I43-8.

75. Brown JR, Hernandez F, Jr., Klemperer JD, Clough RA, DiPierro FV, Hofmaster PA, Ross CS, O'Connor GT. Cardiac troponin T levels in on- and off-pump coronary artery bypass surgery. Heart Surg Forum. 2007;10:E42-6.

77. Brown JR, Cochran RP, Leavitt BJ, Dacey LJ, Ross CS, MacKenzie TA, Kunzelman KS, Kramer RS, Hernandez F, Jr., Helm RE, Westbrook BM, Dunton RF, Malenka DJ, O'Connor GT. Multivariable prediction of renal insufficiency developing after cardiac surgery. Circulation 2007;116:I139-43.

78. Dacey LJ, Likosky DS, Ryan TJ Jr, Robb JF, Quinn RD, DeVries JT, Hearne MJ, Leavitt BJ, Dunton RF, Clough RA, Sisto D, Ross CS, Olmstead EM, O'Connor GT, Malenka DJ. Long-term survival after surgery versus percutaneous intervention in octogenarians with multivessel coronary disease. Ann Thorac Surg 2007;84:1904-11; discussion 1904-11.

80. Brown JR, Cochran RP, MacKenzie TA, Furnary AP, Kunzelman KS, Ross CS, Langner CW, Charlesworth DC, Leavitt BJ, Dacey LJ, Helm RE, Braxton JH, Clough RA, Dunton RF, O'Connor GT. Long-term survival after cardiac surgery is predicted by estimated glomerular filtration rate. Ann Thorac Surg 2008;86:4-11.

81. Brown JR, DeVries JT, Piper WD, Robb JF, Hearne MJ, Ver Lee PM, Kellet MA, Watkins MW, Ryan TJ Jr, Silver MT, Ross CS, MacKenzie TA, O'Connor GT, Malenka DJ. Serious renal dysfunction after percutaneous coronary interventions can be predicted. Am Heart J 2008;155:260-6.

82. Brown JR, Hernandez F, Klemperer JD, Clough RA, Dipierro FV, Hofmaster PA, Ross CS, O'Connor GT. Long-term Survival and Cardiac Troponin T Elevation in On- and Off-Pump Coronary Artery Bypass Surgery. Heart Surg Forum 2008;11:E163-8.

83. DioDato CP, Likosky DS, DeFoe GR, Groom RC, Shann KG, Krumholz CF, Warren CS, Pieroni JW, Benak A, McCusker K, Olmstead EM, Ross CS, O'Connor GT. Cardiopulmonary bypass recommendations in adults: the northern New England experience. J Extra Corpor Technol 2008;40:16-20.

84. Likosky DS, Dacey LJ, Baribeau YR, Leavitt BJ, Clough R, Cochran RP, Quinn R, Sisto DA, Charlesworth DC, Malenka DJ, MacKenzie TA, Olmstead EM, Ross CS, O'Connor GT. Long-term survival of the very elderly undergoing coronary artery bypass grafting. Ann Thorac Surg 2008;85:1233-7.

85. O'Connor GT, Olmstead EM, Nugent WC, Leavitt BJ, Clough RA, Weldner PW, Charlesworth DC, Chaisson K, Sisto D, Nowicki ER, Cochran RP, Malenka DJ. Appropriateness of coronary artery bypass graft surgery performed in northern New England. J Am Coll Cardiol 2008;51:2323-8.

86. MacKenzie TA, Malenka DJ, Olmstead EM, Piper WD, Langner C, Ross CS, O'Connor GT. Prediction of survival after coronary revascularization: modeling short-term, mid-term, and long-term survival. Ann Thorac Surg 2009;87:463-72.

87. Likosky DS, Sorensen MJ, Dacey LJ, Baribeau YR, Leavitt BJ, DiScipio AW, Hernandez F, Jr., Cochran RP, Quinn R, Helm RE, Charlesworth DC, Clough RA, Malenka DJ, Sisto DA, Sardella G, Olmstead EM, Ross CS, O'Connor GT. Long-term survival of the very elderly undergoing aortic valve surgery. Circulation 2009;120:S127-33.

88. Leavitt BJ, Baribeau YR, DiScipio AW, Ross CS, Quinn RD, Olmstead EM, Sisto D, Likosky DS, Cochran RP, Clough RA, Boss RA Jr, Kramer RS, O'Connor GT. Outcomes of patients undergoing concomitant aortic and mitral valve surgery in northern New England. Circulation 2009;120:S155-62.

89. Surgenor SD, Kramer RS, Olmstead EM, Ross CS, Sellke FW, Likosky DS, Marrin CA, Helm RE, Jr., Leavitt BJ, Morton JR, Charlesworth DC, Clough RA, Hernandez F, Frumiento C, Benak A, DioData C, O'Connor GT. The association of perioperative red blood cell transfusions and decreased long-term survival after cardiac surgery. Anesth Analg 2009;108:1741-6.

90. Groom RC, Quinn RD, Lennon P, Donegan DJ, Braxton JH, Kramer RS, Weldner PW, Russo L, Blank SD, Christie AA, Taenzer AH, Forest RJ, Clark C, Welch J, Ross CS, O'Connor GT, Likosky DS. Detection and elimination of microemboli related to cardiopulmonary bypass. Circ Cardiovasc Qual Outcomes 2009;2:191-198.

91. Dacey LJ, Braxton JH, Likosky DS. Endoscopic versus open vein-graft harvesting[letter]. N Engl J Med 2009; 361;19:235-44.

92. Kramer RS, Quinn RD, Groom RC, Braxton JH, Malenka DJ, Kellett MA, Brown JR. Same admission cardiac catheterization and cardiac surgery: Is there and increased incidence of acute kidney injury? Ann Thorac Surg 2010;90:1418-24.

93. Robert AM, Kramer RS, Dacey LJ, Charlesworth DC, Leavitt BJ, Helm RE, Hernandez F, Sardella Gl, Frumiento C, Likosky DS, Brown JR. Cardiac surgery-associated acute kidney injury: A comparison of two consensus criteria. Ann Thorac Surg 2010;90:1939-43.

94. Brown JR, Robb JF, Block CA, Schoolwerth AC, Kaplan AV, O'Connor GT, Solomon RJ, Malenka DJ. Does safe dosing of iodinated contrast prevent contrast-induced acute kidney injury? Circ Cardiovasc Interv 2010;3:346-50.

95. Groom RC, Quinn RD, Lennon P, Welch J, Kramer RS, Ross CS, Beaulieu PA, Brown JR, Malenka DJ, O'Connor GT, Likosky DS. Microemboli from cardiopulmonary bypass are associated with a serum marker of brain injury. The Journal of extra-corporeal technology 2010; 42: 40-44.

95. Dacey LJ, Braxton JH, Kramer RS, Schmoker JD, Charlesworth DC, Helm RE, Frumiento C, Sardella GL, Clough RA, Jones SR, Malenka DJ, Olmstead EM, Ross CS, O'Connor GT, Likosky DS. Long-term outcomes of endoscopic vein harvesting after coronary artery bypass grafting. Circulation 2011;123:147-53.

96. Ahmed B, Dauerman HL, Piper WD, Robb JF, VerLee P, Ryan TJ Jr, Goldberg D, Boss RA JR, Phillips WJ, Fedele F, Dutzel D, Malenka DJ. Recent changes in practice of elective percutaneous coronary intervention for stable angina. Circ Cardiovasc Interv 2011;4:300-5.

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