Abstract
Variability in length of stay (LOS) and its determinants were studied in 60 patients without complications after acute myocardial infarction (AMI) at three teaching hospitals. The patients at the three hospitals had similar clinical presentations and in-hospital courses. However, 81% of patients admitted to the intensive care unit (ICU) at one hospital were transferred to lower levels of care within 48 hours, compared with 40% and 56% at the other two hospitals (p<0.05). Patients who underwent pre-discharge exercise tests (ETT) had a longer total LOS than patients who did not (11.9±4.3 vs 9.2±2.9 days; p<0.01). Similarly, patients who underwent 24-hour ambulatory monitoring (AMB-MON) had a longer total LOS than patlents who did not (12.3±4.3 vs 9.1±2.8 days; p<0.001). No differences in clinical characteristics or in survival at six months were detected between patients who did and did not undergo ETT or AMB-MON. Total LOS correlated with whether patients underwent 0, 1, or both of these tests (p<0.001); each test was associated with a 2.3-day increase in the duration of hospitalization. The authors conclude that such tests may prolong total LOS of patients without complications after AMI.
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References
Goldman L, Cook EF. The decline in ischemic heart disease mortality rates. Ann Intern Med 1984;101:825–36
Harrison DC, ed. A symposium: cost containment issues in cardiology. Am J Cardiol 1985;56:1C–75C
Mulley AG, Thibault GE, Hughes RA, Barnett GO, Reder VA, Sherman BL. The course of patients with suspected myocardial infarction. The identification of low-risk patients for early transfer from intensive care. N Engl J Med 1980;302:943–8
Thibault GE, Mulley AG, Barnett GO, et al. Medical intensive care: indications, interventions, and outcomes. N Engl J Med 1980;302:938–42
Goldman L, Weinberg M, Weisberg M, et al. A computer-derived protocol to aid in the diagnosis of emergency room patients with acute chest pain. N Engl J Med 1982;307:588–96
Pozen MW, D’Agostino RB, Selker HP, Sytkowski PA, Hood WB. A predictive instrument to improve coronary-care-unit admission practices in acute ischemic heart disease. A prospective multicenter clinical trial. N Engl J Med 1984;310:1273–8
Singer DE, Mulley AG, Thibault GE, Barnett GO. Unexpected readmissions to the coronary care unit during recovery from acute myocardial infarction. N Engl J Med 1981;304:625–9
Detsky AS, Stricker SC, Mulley AG, Thibault GE. Prognosis, survival and the expenditure of hospital resources for patients in an intensive care unit. N Engl J Med 1981;305:667–72
Madsen EB, Gilpin E, Henning H. Short-term prognosis in acute myocardial infarction: evaluation of different prediction methods. Am Heart J 1984;107:1241–51
Brush JE, Brand DA, Acampora D, Chalmer B, Wackers FJ. Use of the initial electrocardiogram to predict in-hospital complications of acute myocardial infarction. N Engl J Med 1985;312:1137–41
Rhodes RS, Krasniak CL, Jones PK. Factors affecting length of stay for femoropopliteal bypass. N Engl J Med 1986;314:153–7
Chassin MR, Brook RH, Park RE, et al. Variations in the use of medical and surgical services by the Medicare population. N Engl J Med 1986;314:285–90
Office of Technology Assessment. Technology case study 24: Variations in hospital length of stay. Their relationships to health outcomes. 1983;OTAHCA-23
Waters D, Bosch X, Bouchard A, et al. Comparison of clinical variables and variables derived from a limited predischarge exercise test as predictors of early and late mortality after myocardial infarction. J Am Coll Cardiol 1985;5:1–8
Pozen MW, Stechmiller JK, Voigt GC. Prognostic efficacy of early clinical categorization of myocardial infarction patients. Circulation 1977;56:816–9
DeBusk RF, Kraemer HC, Nash E. Stepwise risk stratification soon after acute myocardial infarction. Am J Cardiol 1983;52:1161–6
Norris RM, Caughey DE, Mercer CJ, Scott PJ. Prognosis soon after myocardial infarction. Six-year follow-up. Br Heart J 1974;36:786–90
Chaturvedi NC, Walsh MJ, Evans A, Munro D, Boyle McC, Barber JM, Selection of patients for early discharge after acute myocardial infarction. Br Heart J 1974;36:533–5
McNeer JF, Wallace AG, Wagner GS, Starmer CF, Rosati RA. The course of acute myocardial infarction. Circulation 1975;51:410–3
The Coronary Drug Project Research Group. The prognostic importance of the electrocardiogram after myocardial infarction. Ann Intern Med 1972;77:677–89
Mahony C, Hindman MC, Aronin N, Wagner GS. Prognostic differences in subgroups of patients with electrocardiographic evidence of subendocardial or transmural myocardial infarction. Am J Med 1980;69:183–6
The Multicenter Postinfarction Research Group. Risk stratification and survival after myocardial infarction. N Engl J Med 1983;309:331–6
Mather HG, Morgan DC, Pearson NG, et al. Myocardial infarction: a comparison between home and hospital care for patients. Br Med J 1976;1:925–9
Hill JD, Hampton JR, Mitchell JRA. A randomized trial of homeversus-hospital management for patients with suspected myocardial infarction. Lancet 1978;1:837–41
Goldman L. Coronary care units: a perspective on their epidemiologic impact. Int J Cardiol 1982;2:284–7
Theroux P, Waters DD, Halphen C, Debaisieux JC, Mizgala HF. Prognostic value of exercise testing soon after myocardial infarction. N Engl J Med 1979;301:341–5
Starling MR, Crawford MH, Kennedy GT, O’Rourke RA. Treadmill exercise tests predischarge and six weeks post-myocardial infarction to detect abnormalities of known prognostic value. Ann Intern Med 1981;94:721–7
DeBusk RF, Dennis CA. “Submaximal” predischarge exercise testing after acute myocardial infarction: who needs it? Am J Cardiol 1985;55:499–500
Bigger JT, Weld FM, Rolnitsky LM. Prevalence, characteristics and significance of ventricular tachycardia (three or more complexes) detected with ambulatory electrocardiographic recording in the late hospital phase of acute myocardial infarction. Am J Cardiol 1981;48:815–23
Madsen EB, Gilpin E, Henning H, et al. Prediction of late mortality after myocardial infarction from variables measured at different times during hospitalization. Am J Cardiol 1984;53:47–54
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Received from the Center for Cost-Effective Care and the Department of Medicine at the Brigham and Women’s Hospital and the Department of Medicine at the Massachusetts General Hospital, Harvard Medical School; and the Division of Clinical Decision Making, Department of Medicine, New England Medical Center, Tufts University School of Medicine, Boston, Massachusetts.
Supported by grants from the Hartford Foundation to the Brigham and Women’s Hospital and the New England Medical Center and from the Blue Cross/Massachusetts Hospital Fund for Cooperative Innovation to all three hospitals. Dr. Lee is the recipient of a Public Health Service Clinical Investigator Award (HL0 1594-01) from the National Heart, Lung, and Blood Institute. Dr. Mulley is a Henry J. Kaiser Family Foundation Faculty Scholar in General Internal Medicine.
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Lee, T.H., Gottlieb, L.K., Weitzman, L.J. et al. Lengths of stay of patients with uncomplicated acute myocardial infarction at three Boston hospitals. J Gen Intern Med 3, 239–244 (1988). https://doi.org/10.1007/BF02596338
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DOI: https://doi.org/10.1007/BF02596338