• Preventing Medical Errors

    Prevention is Key

    To prevent medical errors, think defensively. Mistakes can occur anywhere—at the doctor’s office, the pharmacy, or the hospital. Errors may result in a wrong diagnosis, medicine, or surgery, or an infection or serious complication.

    Avoiding Medicine Mistakes

    Medicine errors are one of the most common medical errors. You can help avoid them if you understand the medicines you are supposed to be taking and how you should take them.
    Keep these tips in mind when you are prescribed medicine:
    • If the color, shape, or size of a medicine you have been taking changes, be sure to ask about this before taking the new medicine and be sure you receive an explanation that you trust.
    • Let your doctor know about all prescription and over-the-counter medicines you are taking to see if they are safe to use with your newly-prescribed medication.
    • If you have medicine allergies be sure that anyone giving you a new medicine is aware of that allergy. Ask whether this medicine might be something a person with your allergy should not take. For example, you may have an allergy to sulfa drugs (a kind of antibiotic). This may mean that you are also allergic to some diuretics (“water pills”), as well as some medicines to treat diabetes.
    • Have your doctor or pharmacist explain how to use the medication correctly and if there are other foods, medicines, or activities you should avoid while using it.
    • Ask your doctor or pharmacist about possible side effects to expect and which ones are serious.
    • If your doctor writes a prescription for you, make sure you can read it. If not, your pharmacist might not be able to either.

    Avoiding Diagnostic Mistakes

    Problems with diagnosis are another kind of error that you can help your doctors avoid. Even experienced doctors can forget to think of a diagnosis under some circumstances. If you think you know what might be wrong with you, insist that the doctor clearly explains what evidence he has that makes that diagnosis unlikely.
    One of the most common kind of medical errors is called “premature closure.” This occurs when doctors come to a firm conclusion before they have considered all of the alternatives—even when one of these alternatives is the correct diagnosis.
    Even the best and most experienced doctors are at risk for premature closure, and our experience with human nature tells us that it can be very difficult for someone who has made his mind up firmly to change it easily. If the doctor offers a diagnosis that seems unlikely to you, you can help prevent error by asking the doctor:
    • What other alternative diagnosis were considered
    • What tests or other evidence helped him choose among them
    • Whether further testing should be done
    A uniquely avoidable error is when doctors or nurses misidentify you as another patient and try to give you the treatment intended for that person. Be sure you know what treatments or tests you are expected to receive. If you think something unexpected is being done to you, be sure to confirm that this is what your doctor intended for you.

    Be Prepared

    Decreasing your risk of a hospital error begins before you need care. Learn about your condition so you can make informed decisions. Share your medical information with all providers. Ask questions.
    The Magnet Nursing Services Recognition Program for Excellence in Nursing Services was developed to recognize facilities that provide outstanding nursing care. Ask if the hospital you are considering has this status.
    Despite nurses’ importance, hospitals may be understaffed. Therefore, it is vital to understand nurse staffing levels and overtime policies. A tired nurse is more likely to make a mistake. Does the hospital rely on temporary nurses? Unfamiliarity with the unit or care needed increases error risk.
    Find out how many procedures like yours the hospital does. For certain procedures, such as coronary artery bypass surgery , hospitals with more experience have better results. The US Department of Health and Human Services offers a website where you can compare hospitals all over the country. Consumer Reports also has ratings information on hospitals, but you will need to subscribe to receive this information.

    While in the Hospital

    Enlist a friend or family member as an advocate, prepared to politely inquire if anything seems amiss. Raising questions puts the brakes on possible mistakes and gives the healthcare providers time to think.
    While you are in the hospital, consider asking healthcare workers who will touch you whether they have washed their hands. Handwashing can prevent the spread of infections in hospitals.
    Patients preparing for surgery should also talk with the surgeon, anesthesiologist, and nurse so that everyone agrees on what is going to happen.
    Before you leave the hospital, be sure to ask your doctor to explain the treatment plan you will follow at home. This includes new medicines, follow-up apppointments, and when you can resume normal activities.

    Take an Active Role in Your Healthcare Team

    Medical miracles happen regularly in surgical suites and modern hospitals, but so do mistakes. Investing time and effort in your own care helps ensure positive outcomes. Welcome to the most important team you will ever join.


    Hospital CompareUS Department of Health and Human Services http://www.hospitalcompare.hhs.gov/

    The Joint Commission http://www.jointcommission.org/


    Canadian Patient Safety Institute http://www.patientsafetyinstitute.ca/

    Canadian Institute for Health Information http://www.cihi.ca/


    20 tips to help prevent medical errors. Agency for Healthcare Research and Quality website. Available at: http://www.ahrq.gov/CONSUMER/20tips.htm. Updated September 2011. Accessed September 10, 2012.

    Check your medicines: Tips for using medicines safely. Agency for Healthcare Research and Quality website. Available at: http://www.ahrq.gov/consumer/checkmeds.htm. Updated September 2010. Accessed September 10, 2012.

    Graber M. Diagnostic errors in medicine: a case of neglect. Jt Comm J Qual patient saf . 2005;31(2):106-113.

    Needleman J, Buerhaus P, Mattke S, et al. Nurse-staffing levels and the quality of care in hospitals. N Engl J Med . 2002;346:1715-1722.

    Nurse staffing and postsurgical adverse events: an analysis of administrative data from a sample of US hospitals, 1990-1996. Health Serv Res . June 2002.

    Patient safety & medical errors. Agency for Healthcare Research and Quality website. Available at: http://www.ahrq.gov/qual/patientsafetyix.htm. Accessed September 10, 2012.

    Redelmeier DA. Improving patient care. The cognitive psychology of missed diagnoses. Ann Intern Med . 2005 Jan 18;142(2):115-20.

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