Safety, Risk, and Quality Management
Core concepts
Risk content rewards systematic thinking. Know prospective tools - FMEA (failure mode and effects analysis) and hazard vulnerability analysis - versus retrospective tools - root cause analysis and the incident reporting system that feeds it. Risk scoring commonly multiplies severity × probability, with detectability added in FMEA. The hierarchy of controls (elimination, substitution, engineering controls, administrative controls, PPE) explains why an engineering fix outranks a training module. Quality improvement runs on PDSA cycles and indicators with clearly defined numerators and denominators.
Core safety program elements include electrical safety testing and leakage current limits, medical gas verification, alarm management, radiation and laser safety, and a just culture that encourages reporting without punishing honest error.
Traps
- Running an FMEA after an event. That is an RCA.
- Blaming an individual when the system permitted the error.
- Treating alarm fatigue as a training problem. It is a design problem: default limits, delays, and escalation paths.
- Applying one leakage current limit across all equipment classes.
Rule of thumb
For patient-care equipment, chassis leakage current limits are commonly cited around 500 microamps, with different limits for non-patient-care equipment and for patient leads. If a numeric limit is uncertain, reason from equipment class and risk rather than guessing.
Worked example
Infusion pump alarms fire constantly on a unit. Instead of retraining staff, form a team, observe alarm burden, review default settings, adjust limits within policy, and measure alarms per bed per day before and after. Report the indicator with defined numerator and denominator.