Journal of General Internal Medicine

, Volume 21, Issue 9, pp 937–941

Discontinuity of chronic medications in patients discharged from the intensive care unit

  • Chaim M. Bell
  • Parisa Rahimi-Darabad
  • Avi I. Orner
Original Articles

DOI: 10.1007/BF02743141

Cite this article as:
Bell, C.M., Rahimi-Darabad, P. & Orner, A.I. J GEN INTERN MED (2006) 21: 937. doi:10.1007/BF02743141


BACKGROUND: Intensive care unit (ICU) admission may connote an elevated risk of unintentional chronic medication discontinuation because of its focus on acute illnesses and the multiple care transitions.

OBJECTIVE: To determine the proportion of patients discharged from the ICU whose previously prescribed chronic medications were unintentionally discontinued during their hospitalization.

DESIGN AND PARTICIPANTS: Hospital records of consecutive ICU discharges at 1 academic and 2 community hospitals in Toronto. Canada, throughout 2002 were reviewed. Eligible patients were prescribed at least 1 of 6 medication groups before hospitalization: (1) HMG co-A reductase inhibitors (statins); (2) antiplatelets/ anticoagulants (aspirin, clopidogrel, ticlopidine, warfarin); (3)l-thyroxine; (4) non-prn inhalers (anticholinergic, β-agonist, or steroid); (5) acid-suppressing drugs (H2 antagonists and proton pump inhibitors); and (6) allopurinol.

MEASUREMENTS: Use of explicit criteria to assess the proportion of patients whose previously prescribed chronic medications were unintentionally discontinued at hospital discharge.

RESULTS: A total of 1,402 charts were eligible for the study and 834 had prescriptions for at least 1 of the medication groups. Thirty-three percent (251/834) of patients had 1 or more of their chronic medications omitted at hospital discharge. Multivariable logistic regression analysis found that patients from the academic hospital (adjusted odds ratio [OR]=0.70, 95% confidence interval [CI] 0.49 to 1.0) and those with medical diagnoses (adjusted OR=0.48, 95% CI 0.31 to 0.75) had a decreased risk for chronic medication discontinuation.

CONCLUSIONS: Patients discharged from the ICU often leave the hospital without note of their previously prescribed chronic medications. Careful review of medication lists at ICU discharge could avoid potential adverse outcomes related to unintentional discontinuation of chronic medications at hospital discharge.

Key Words

drug discontinuation continuity of care chronic medications patient safety intensive care unit 

Copyright information

© Society of General Internal Medicine 2006

Authors and Affiliations

  • Chaim M. Bell
    • 1
    • 2
    • 3
    • 4
    • 5
  • Parisa Rahimi-Darabad
    • 1
    • 2
  • Avi I. Orner
    • 1
  1. 1.Foculty of MedicineUniversity of TorontoTorontoCanada
  2. 2.Department of MedicineUniversity of TorontoTorontoCanada
  3. 3.Department of Health Policy Management and EvaluationUniversity of TorontoTorontoCanada
  4. 4.The Institute for Clinical Evaluative SciencesUniversity of TorontoTorontoCanada
  5. 5.Department of MedicineSt. Michael’s HospitalTorontoCanada

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