The most common mistakes new nurses make (and how to avoid them)

The first year of nursing is hard for almost everyone. New nurses make more errors than experienced ones, but the reason is not a lack of skill or care. The reason is the jump from school to real shifts, plus a kind of clinical judgment that is still growing. This article explains the most common mistakes and, more importantly, what actually reduces them.

What mistakes do new nurses make most?

The most common are medication errors, missed signs that a patient is getting worse, and trouble deciding which task to do first. A review in the Journal of Nursing Management found that up to 75% of novice nurses commit medication errors during their first years of practice (Saintsing, Gibson & Pennington, 2011).

These numbers can feel scary, but they describe a stage, not a permanent trait. Every nurse you admire passed through the same stage. The goal is to understand the pattern so you and your unit can build guards against it.

Why is the first year so hard?

The job asks for more than school had time to build. Nurses call this transition shock: the gap between what you learned in class and what a real shift demands. Heavy workloads make it worse. In NCSBN’s large national workforce study, 62% of nurses reported their workload increased during the pandemic (Journal of Nursing Regulation, 2023). Less time per patient means cues get missed before anyone has a chance to act on them.

Naming this gap matters. When you know the pressure is built into the system, you stop blaming yourself and start asking for the support that closes the gap.

Why do new nurses miss a patient getting worse?

The skill of spotting small changes early grows with experience. In a classic ICU study, expert nurses collected almost twice as many clinical cues as novices and were better at linking those cues to anticipate problems (Hoffman, Aitken & Duffield, 2009). The expert is not smarter. The expert has seen the pattern many times and recognizes it fast.

You can speed this up. Each shift, pick one patient and ask what their normal looks like and what the first sign of trouble would be. Saying it out loud, or writing it down, trains the same pattern recognition that experience builds slowly. The Next Generation NCLEX explainer breaks clinical judgment into six clear steps you can practice one at a time.

Are these mistakes the nurse’s fault?

No. Most first-year errors come from systems and timing, not from bad nurses. Short staffing, little time to assess, a new electronic record, and few chances for guided practice all push error rates up. A tired nurse in a thin-staffed unit will miss more, no matter how much they care.

This framing is not an excuse. It points to the real fix. When a unit changes the system around new nurses, the errors drop. That is where the strong evidence sits.

What reduces these mistakes the most?

Structured onboarding helps most. Hospitals using the Vizient/AACN Nurse Residency Program report 87.2% first-year retention, versus a 67.2% national average (program-reported outcomes). These programs give new nurses a trained preceptor, protected time to practice, and a clear path to build core skills before the full load lands.

Two more supports have clear evidence behind them. A Nurse Education Today study found that ICU nurses’ clinical decision-making scores improved significantly after a structured reflection program (Razieh et al., 2018) — practicing a decision, then talking through how you reasoned. And structured peer-support programs such as Johns Hopkins’ RISE reduce anxiety and traumatic-stress symptoms after adverse events; 80% of participants rated the program personally helpful (Connors et al., 2020). That support matters because of second-victim syndrome: the lasting guilt and anxiety a nurse can carry after a serious mistake.

What can a new nurse do on their own?

You cannot fix staffing alone, but you can build daily habits that lower your risk. Slow down for the five rights before every medication. Ask a coworker to double-check high-alert drugs. Say your concern out loud early instead of waiting to be sure, because waiting is when missed cues turn into harm.

Short, focused practice between shifts also helps. Working through one realistic case a day trains the deciding step, which is the step new nurses miss most. If you also need continuing education, our continuing education courses give you a certificate of completion you can download.

How long until it gets easier?

Most new nurses feel the hardest pressure in the first 3 to 6 months, then steady improvement after that. The speed depends a lot on your support. A trained preceptor, protected practice time, and a unit where questions are welcome shorten the climb. Few new nurses describe a single day when it suddenly clicks. They describe a slow, steady rise in confidence.

Practice clinical judgment a few minutes a day

The fastest, simplest thing one new nurse can control is daily judgment practice. Nursio gives you short clinical cases, about 10 minutes each, that score how you reason through a patient and send you to your weakest step first. That is the exact skill that separates the cue a novice misses from the cue an expert catches early.

This article was written by Amed Pacho, RN, BSN, MBA.

Download Nursio and start building clinical judgment one short case at a time: get the app.

References

• Connors, C. A., Dukhanin, V., March, A. L., Parks, J. A., Norvell, M., & Wu, A. W. (2020). Peer support for nurses as second victims: Resilience, burnout, and job satisfaction. Journal of Patient Safety and Risk Management, 25(1), 22–28. https://doi.org/10.1177/2516043519882517
• Hoffman, K. A., Aitken, L. M., & Duffield, C. (2009). A comparison of novice and expert nurses’ cue collection during clinical decision-making: Verbal protocol analysis. International Journal of Nursing Studies, 46(10), 1335–1344. https://doi.org/10.1016/j.ijnurstu.2009.04.001
• Martin, B., Kaminski-Ozturk, N., O’Hara, C., & Smiley, R. (2023). Examining the impact of the COVID-19 pandemic on burnout and stress among U.S. nurses. Journal of Nursing Regulation, 14(1), 4–12. https://doi.org/10.1016/S2155-8256(23)00063-7
• Razieh, S., Somayeh, G., & Fariba, H. (2018). Effects of reflection on clinical decision-making of intensive care unit nurses. Nurse Education Today, 66, 10–14. https://doi.org/10.1016/j.nedt.2018.03.009
• Saintsing, D., Gibson, L. M., & Pennington, A. W. (2011). The novice nurse and clinical decision-making: How to avoid errors. Journal of Nursing Management, 19(3), 354–359. https://doi.org/10.1111/j.1365-2834.2011.01248.x
• Vizient. (2026). Vizient/AACN Nurse Residency Program. https://www.vizient.com/what-we-do/operations-and-quality/vizient-aacn-nurse-residency-program