MATERIAL and METHODS: Demographic, symptom-history, neurological examination (application, preoperative, discharge and 1-year follow-up Glasgow Coma Scale (GCS) and Modified Rankin Scale (mRS) score), radiological data, external ventricular drainage, application-neurologic deterioration-surgery intervals, hospitalization duration data of patients with posterior circulation infarct who underwent SDC was collected. Data were analyzed to determine the effect on mortality and long-short term functional outcome. Good outcome was an mRS score of 0-2, bad outcome was mRS 3-6.

RESULTS: Median age was higher (62) in mortal patients than surviving (51) (p=0.04). Median age of good outcome at discharge group was 45, bad outcome was 61 (p=0.004). Median age of good outcome at 1-year follow up group was 46.5, bad outcome was 61 (p=0.01). Median preoperative GCS score of mortality group was 6.5, surviving was 13 (p= 0.04). Preoperative GCS score of good outcome at discharge group was 13, bad outcome was 7.5 (p=0.03). Mortality was associated with hypertension (p=0.007). Neurologic deterioration-surgery time interval was 9.5 hours median at mortality group, 4 hours at survival (p=0.04). 1-year follow up mRS was better than discharge (p=0.026).

CONCLUSION: Prevention and treatment of hypertension reduces mortality. Lower age group is expected to have low mortality with good outcome; should be monitored closely. Surgery should be planned with GCS decrease before a certain low point and soon after neurological deterioration. Long-term outcomes get statistically better with rehabilitation. Anahtar Kelimeler : Suboccipital decompressive craniectomy, Posterior circulation infarct, Malign cerebellar edema, Mortality, Functional outcome