RESPIRATORY ARREST OUTSIDE HOSPITAL

Of 954 attempted resuscitations outside hospital performed by ambulanc e personnel, 48 patients (5%) had primary respiratory arrest. Comparin g this group with those manifesting cardiorespiratory arrest, patients with primary respiratory arrest were significantly more likely to be female (25 of 48 vs 269 of 906-P < 0.005), were more likely to have a non-cardiac cause (67% vs. 22%-P < 0.00001) and more likely to have a witnessed arrest, Of all arrests witnessed by ambulance crew, 35% were respiratory arrests. Basic and advanced life-support was delivered so oner. Outcome was significantly better, with 19 patients (40%) being d ischarged compared to only 49 patients (5.1%) discharged in cases of c ardiorespiratory arrest (p < 0.00001), Considering that many respirato ry arrests were witnessed by ambulance crew, the type of crew (EMT or paramedic) made no difference to outcome, Our findings suggest that pa tients manifesting respiratory arrest outside hospital are a heterogen eous group who have a relatively good prognosis regardless of the type of ambulance crew that attends.