Paramedic Papers Daily — 13 October 2026

Three papers today. Paper one — lactate turns out to be the main engine of the prehospital mSOFA score's prediction of death. Paper two — fewer than eight in a hundred low-acuity emergency patients arrive by ambulance, and the ones calling most are those with the fewest alternatives. Paper three — a review maps seven competency domains behind the ambulance-driving role.

Paper one — QJM. A prospective, multicentre observational study from Spain, twelve thousand two hundred and twelve adults transferred to emergency departments at high priority. The researchers took the five components of the prehospital mSOFA score — lactate, oxygenation, GCS, blood pressure and creatinine — and ran a decision tree to see which one actually drives its prediction of death within two days. The answer was lactate. The tree's first split was a lactate of three point eight millimoles per litre — above that, oxygenation, GCS and creatinine followed; below it, GCS and creatinine led. Cohort mortality was five percent. That's the number that jumps out — one variable doing most of the work. The caveats: it predicts two-day in-hospital mortality only, and the tree hasn't been validated outside Spain. Point-of-care lactate sits with advanced crews in a handful of Australian services — most don't carry it. So for most listeners this is about how triage scores think rather than a change to tomorrow's shift. Where a lactate is on the truck, it's a prompt that the number is carrying more weight than the score suggests.

Paper two — Prehospital Emergency Care. A retrospective study of forty-one thousand seven hundred and sixty-one low-acuity emergency department visits across twenty-one hospitals in the southeastern United States. Only seven point seven percent arrived by ambulance. The odds were highest for people who were retired or disabled — nearly fourfold — and for those who were unemployed. Night-time presentations and mental health diagnoses also raised the odds, while having an established GP roughly halved them. That's the pattern worth noticing: the people calling an ambulance are the ones without other options. Low-acuity demand and alternative referral pathways are live issues for Australian services too, so the shape of this travels even if the setting doesn't. The caveat — it's a US system with insurance-driven care, and the study only captured visits ending in discharge, so the sickest low-acuity transports aren't represented.

Paper three — Paramedicine. A scoping review of nineteen studies published between two thousand and seven and twenty twenty-six, mapping how the ambulance-driving role and its competencies are conceptualised across emergency medical services. Seven domains came out: technical driving, safety and risk management, decision-making, communication and teamwork, stress and emotional management, professional attributes, and fitness for work. Australian ambulances don't have dedicated driver roles — driving is part of every paramedic's scope — so the value here is the framing: it unpacks a bundle of skills that usually goes unexamined because it's folded into everything else. The caveat — workforce models vary so widely between countries that the domains don't map cleanly onto any single system.

Quick recap. One — lactate is the central axis of the prehospital mSOFA, with three point eight the key threshold. Two — under eight percent of low-acuity arrivals came by ambulance, and the odds were highest for those without a regular GP. Three — a review frames ambulance driving as seven competency domains, from technical driving to fitness for work.

That's the roundup for Tuesday the thirteenth of October. Papers on the dashboard. Back tomorrow.