5 Common Medical Errors – And How to Beat Them (aka: MACK-B)

From MyHSN: Learn. Improve. Repeat

Let’s face it – medical errors happen. They are frustating, sometimes heartbreaking, but they are also a powerful learning tool. We call them MACK-B errors:

  • Memory
  • Applying rules
  • Communication(x3)
  • Knowledge/skills
  • Bias

Good news? You can actively reduce all of them. Let’s break it down.

1. Memory Fails

  • “I forgot to write the max dose …”
  • “Wait, what did i do in the last case again?”

These aren’t rare. They are human. But they can be dangerous.

How to fix it:

  • Create a quick -acess note system: your phone, a simple blog, or pocket reference.
  • Use checklists or templates for common scenarios.
  • When in doubt? Look it up. It’s faster than guessing wrong.

2. Misapplied Rules

  • Using a bad rule (e.g. outdated guideline).
  • Misusing a good rule (e.g. blindly sticking to it without considering the patient).

How to fix it:

  • Know your local and national guidelines.
  • Remeber: they are guidelines, not commandments.
  • If you go off-piste – have a good reason, and document it.
  • Share that plan with the patient. Communication matters.

3. Communication (Communication, Communication!)

This is the #1 cause of medical error. Always has been. Probably always will be.

  • Poor handovers.
  • Unclear documentation.
  • Missed (poorly organised) follow-ups.
  • Junior doctors unsure how to communicate in the local setup.
  • Admin errors, often due to unclear instructions.

How to fix it:

  • Shadow great communicators. Copy their language style, even their silences. Email consultants to improve follow-up.
  • Get trained. Volunteer for communication skill courses.
  • Never blame the system – its your job to overcome it.
  • Handle complaints well. Most of them are due to communication gaps. Own it. Say sorry. Learn. Get better.

4. Knowledge and Skills Gaps

  • Wrong drug. Wrong dose. Missed allergy.
  • Sent a patient home too soon.
  • Missed red flags.
  • Poor technique in procedures or investigations.

How to fix it:

  • Read widely. Stay curious. Never stop learning.
  • Go to courses. Attend conferences.
  • Watch the best. Ask Questions. No matter how trivial.
  • Prescribing? Always double-check doses, interactions, allergies. Use resources. No shame in being safe.

5. Bias

  • Overconfidence from past experience.
  • Anchoring on a single diagnosis.
  • Being afraid to challenge seniors.
  • Not asking for help (especially when unsure).

How to fix it:

  • Stay humble.
  • Always ask: “Could I be wrong?” Remember, seniors were juniors once. They want to help you.
  • Try to disprove your theory, not just prove it.
  • Encourage second opinions. A fresh set of eyes can catch what yours has missed.

MyHSN Mantras

Mantra 1: You need to make mistakes

  • No mistakes? You havent seen enough patients. or taken enough (calculated) risks. This is part of the journey.
  • Yes, some errors will haunt you – and that’s okay. Carry the lesson, not the shame.

Mantra 2: Work hard. Be kind. Show you care.

  • Say sorry when you need to.
  • Protect your juniors. Their mistakes? Often your supervision gap.
  • Keep showing up. Go to work the day after a mistake. And keep improving.