Evaluación de una unidad de tratamiento del ataque cerebral en un hospital universitario / Evaluation of a stroke unit at a university hospital in Chile

ABSTRACT

Background: Stroke is the second specific cause of death in Chile, with a mortality rate of 48.6 per 100.000 inhabitans. It accounts for 6 percent of all hospitalizations among adults. Aim: To study the type of patients hospitalized at a Stroke Unit in a general hospital and the costs and benefits of such unit. Material and methods: A descriptive and retrospective study using a patient registry, developed in Access® that included separate sections for ischemic and hemorrhagic stroke. Established diagnostic criteria were used. The mean costs per patient and complications were also calculated. Results: During 2003, 425 stroke patients were admitted to our hospital and 105 (age range 30-89 years, 58 percent female) were hospitalized at the Stroke Unit. Eighty three percent had ischemic and 16 percent had hemorrhagic stroke. The most common etiologies were thrombosis in 41 percent, embolism in 36 percent, lacunar in 13 percent, arterial dissection in 5 percent and transient ischemic attack in 3 percent. Fifty eight percent of patients had partial anterior ischemic stroke (PACI), 73 percent had hypertension and 29.5 percent diabetes. Only 18 percent arrived to the Stroke Unit with less of 6 hours of evolution, 7 percent of patients were admitted within the 3 hours after the onset of symptoms and 18 percent, from 3 to 6 hours. The mean lenght of stay in the Stroke Unit was 6.6 days and at the hospital 9.9 days (p <0.01). The mean costs per patient at the Stroke Unit and at the hospital were US$ 5.550 and US$ 4.815, respectively (p =ns). Conclusions: The Stroke Unit decreases hospital stay days without raising costs importantly. The inclusion criteria for stroke patients admitted to the Unit were adequate and the stroke registry allowed a good assessment of the Unit operation.