The hidden arithmetic of clinical time: what happens when guidelines outpace the hours in a day.
Guidelines are written by specialists in a single condition. Clinicians apply them to patients with several. The maths of this has never been honestly confronted.
There is an arithmetic problem at the heart of modern general practice that nobody in authority wants to name directly. If a GP followed all clinically relevant guidelines for their average patient list, the time required would exceed the available hours in a working week.
The system has responded to this not by acknowledging the constraint, but by adding more guidelines.
The map is not the territory
Guidelines are maps. They represent the best available evidence for a condition in an idealised patient, typically the patient from the randomised controlled trial: relatively young, with one condition, no significant comorbidities, good health literacy. The average patient in a busy general practice is none of these things.
When we apply multiple guidelines simultaneously, as we must with most patients over sixty, they begin to conflict. The clinician must synthesise, prioritise, and document a justification for what they chose to follow and why. That process takes time that does not exist in the ten-minute consultation.
Opportunity cost and the invisible constraint
Every minute spent on administrative guideline compliance is a minute not spent on the patient in the room. This is the opportunity cost that health policy rarely accounts for. When a tired clinician chooses which guideline to follow today, they are not making a suboptimal clinical decision but they are making a rational resource allocation decision under impossible constraints.
The danger of mischaracterising this as individual failure, as deviation from standard of care, is that it displaces accountability from the system that created the constraint onto the clinician managing it. This is both unfair and strategically counterproductive. You cannot fix a capacity problem by blaming the people operating inside it.
What an honest answer looks like
Guidelines should state how long they take to implement. Not aspirationally, but honestly, including the time for reading updates, the documentation required when a clinician decides not to follow a recommendation, and the cognitive load of holding multiple conflicting protocols simultaneously.
More importantly, those responsible for commissioning guidelines should accept a constraint that clinicians have silently accepted for years: any new recommendation requires time, and time is finite. Adding a guideline without removing, streamlining, or properly resourcing existing ones is not a public health improvement. It is an unfunded mandate.
Time is the most valuable commodity in clinical medicine. We have become sophisticated at measuring almost every other resource. Our failure to account honestly for time in guideline design is a choice, and one that exhausted, burning-out clinicians are paying for on behalf of a system that has not yet found the courage to acknowledge the arithmetic.
Developed from a rapid response published in The BMJ, 21 January 2023, in response to: Guidelines should consider clinicians' time needed to treat. BMJ. 2022.View original rapid response →
