Sleep Reform for Physicians: Part 3

When I was in training, I wish I’d had a resource outlining the harms of sleep deprivation. Here is a detailed summary, formatted as a letter, that can be presented to program leadership.

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Dear Dr. [Program Director’s Name],

Caring for patients around the clock is one of the hardest and most important responsibilities of residency programs, and we recognize how much thoughtful effort goes into balancing education, service, staffing coverage, budgets, and safety within real-world constraints. This letter is offered in a spirit of partnership with the shared goal of protecting patients and supporting the physicians who care for them.

Emerging data show that sleep deprivation is a measurable form of cognitive impairment. In healthcare, sleep loss increases the risk of medical errors, occupational injuries, and motor vehicle crashes after call. It has also been shown to worsen burnout and physicians’ mental and physical health. We hope the following data can serve as a practical, evidence-informed starting place for collaborative discussion about the harms of sleep loss and potential efforts to foster a safer, more sustainable training environment.

1) Patient safety & cognitive impairment

• Sleep deprivation has been shown to reduce attention, working memory, and reaction time, increasing the risk of cognitive errors.¹
• Fatigue can impair performance similarly to alcohol intoxication. In controlled testing, 24 hours of sustained wakefulness produced performance decrements comparable to a blood alcohol concentration (BAC) of 0.10%, higher than the legal limit for driving.²
• In residents, extended shifts (>24 hours) increase the risk for serious medical errors. In one study, residents made 36% more serious medical errors and 5 times more diagnostic errors on a schedule with extended shifts compared with an intervention schedule that eliminated extended shifts.³

2) Occupational hazards: Needlestick injuries

• Percutaneous injuries are more common during extended shifts. In a national prospective study of interns, percutaneous injuries were more frequent during extended work than during non-extended work (OR 1.61) and occurred after a mean of 29 consecutive hours of work.⁴
• Needlestick injuries carry significant exposure risks, cause substantial anxiety, frequently require prophylaxis, and often result in physical and psychological harm.⁵

3) Post-call driving risk and car accidents 

• Data shows that the risk of car accidents increases sharply with sleep loss, with drivers who slept less than 4 hours having an 11.5-fold higher crash rate.⁶
• The National Sleep Foundation concludes that individuals who have slept 2 hours or less in a 24-hour period are not fit to operate a vehicle.⁷
• Extended shifts among doctors have been shown to increase the risk of car crashes. In one study, residents reported higher odds of a motor vehicle crash after an extended shift (OR 2.3) and much higher odds of a near-miss (OR 5.9) compared with non-extended shifts.⁸

4) Mental and physical health consequences 

• Insufficient sleep is associated with increased risk of several chronic conditions, including obesity, diabetes, hypertension, cancer, heart disease, and stroke.⁹ Sleep deprivation is an independent risk factor for anxiety, depression, and suicidal thoughts.¹⁰
• Severe sleep deprivation can precipitate perceptual distortions and hallucinations, with a progression toward psychosis-like symptoms as time awake increases.¹¹
• A NEJM review noted that insufficient sleep is one of the strongest factors associated with depression in resident doctors.¹²

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Our goal in sharing this data is to explore evidence-driven, practical solutions that fit the realities of clinical care. We believe that when programs and residents work together using evidence, workflow data, and continuous improvement methods, fatigue mitigation can become a shared quality and safety initiative that strengthens both patient care and training. Here are several evidence-based solutions: 

1. Identify the highest-risk fatigue situations, including specific rotations, call structures, and scenarios where sleep deprivation is most severe, to prioritize targeted improvements. 
2. Reduce nighttime cognitive load when possible, including shifting non-urgent work to daytime teams and standardizing protocols for routine overnight issues.
3. Protect post-call recovery by excusing residents from lectures or routine clinical tasks after sign-out.
4. Provide post-call ride options to reduce residents’ risk of car crashes. Accessible call rooms for rest after a shift can also reduce the harm of fatigued driving. 
5. Replace 24-28-hour shifts with 12-16-hour shifts when possible, and increase the strength of handoffs to ensure a high level of continuity of care. 
6. Reduce extreme consecutive hours where feasible (especially on high-acuity rotations) and create cross-coverage to enable protected overnight rest windows.

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Thank you for taking the time to read this summary. We are grateful for your commitment to education and resident well-being, and we look forward to working together to promote learning and reduce preventable harm to patients and physicians. 

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Sincerely,

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[Your Name]

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