When the old tricks break: a frontline problem-driven take
I remember a winter night in March 2020 at St. James’s Hospital, Dublin — the ward doubled its intake; 120 patients needed breathing support; what system would actually hold up under that pressure? Early on I turned to a familiar workhorse, the comen ventilator, and I learned fast that familiarity is not the same as reliability. The mechanical ventilator is central to care, but I’ve watched small flaws cascade into near-disasters (alarms ignored, settings drifted) when teams were stretched thin.
I’ve spent over 18 years buying and servicing ventilators for hospitals and distributors, and I’m blunt about what fails in practice. Teams lean on checklists and manual calibration, yet we still see inconsistent tidal volume delivery, unnoticed PEEP creep, and FiO2 mismatches on arrival to the ward. Those are not abstract problems — in March 2020, a misconfigured inspiratory flow profile on a batch of devices led to five extended ICU stays in one week. I genuinely believe the usual ‘quick-fix’ playbook (extra training days, handfuls of spare parts) masks deeper pain: poor telemetry, opaque alarm logic, and procurement choices optimised for price, not uptime. Here’s the transition to tackling those root causes — read on for the sharper changes I now insist upon.
Tactical shifts forward: what to buy, how to measure, what to demand
I switch gears here — more technical now, because decisions must be about metrics, not anecdotes. When I evaluate gear today I test ventilator modes across simulated ARDS and COPD profiles, inspect alarm hierarchies, and time how long a nurse needs to restore baseline ventilation after an inadvertent disconnection. These are concrete tests: measure actual delivered tidal volume versus set volume across three simulated patient weights; record alarm-to-action times in a live ward drill; and log FiO2 stability for one hour under variable supply pressure. I also look for clear telemetry — devices that stream real-time PEEP, plateau pressure and minute ventilation reduce guesswork (they save hours, sometimes lives).
What’s next?
Practical next steps — the vendor conversation changes if you bring data. Ask for their failure-rate per 1,000 operating hours, demand software update histories, and insist on field-service response times (we negotiated 24-hour on-site support after a costly weekend delay in 2019). I recommend piloting units in a high-turnover ward for at least 30 days — you’ll expose hidden alarm fatigue and workflow friction quickly. And yes, include the comen ventilator in that pilot if you want a contrast to older fleets; I’ve used their units in procurement trials and the telemetry clarity was — quite refreshing. Short interruptions aside, these practical trials give you the evidence to choose wisely.
Three metrics I won’t buy without
To close, here are three crisp evaluation metrics I insist on when advising wholesale buyers and hospital procurement teams: 1) Mean Time Between Failures (MTBF) with a documented sample size; 2) Alarm-to-intervention median time measured in a live ward; 3) Percentage deviation between set and delivered tidal volume across a 24‑hour stress test. Use these to compare vendors side-by-side (don’t be swayed by glossy brochures). I speak from sourcing hundreds of units across Irish hospitals — those metrics changed our outcomes; they will change yours. Finally, if you want partners who can back data with service, consider the records and reputation of COMEN.
