Basal Cisternostomy in Head Injury: More Questions than Answers

Cisternostomy has recently been reintroduced in the setting of severe TBI as an adjuvant surgical technique for decreasing brain edema and refractory intracranial hypertension. However, there is not much clarity regarding its role in head injury.

Study the effect of cisternostomy on intracranial pressure, morbidity, and mortality in head-injured patients.

We conducted a single-center quasi-experimental study between November 2018 and November 2020. All candidates for decompressive hemicraniectomy (DHC) were divided into two groups: DHC-BC (undergoing basal cisternostomy with DHC) and DHC (undergoing DHC alone). We compared the impact of surgery on decreasing ICP and clinical outcomes in both groups.

During the study duration, we admitted 659 head-injury patients. Forty patients were included in the study (9 in the DHC-BC group and 31 in the DHC group). Both the groups were comparable in terms of baseline clinical characteristics such as age, gender, preoperative GCS, head injury severity, radiological features, and opening ICP. Patients in both groups had a decline in ICP following surgery. The mean closing pressure in the DHC-BC group (11.3 ± 5.9) was significantly higher than that in the DHC group (5.3 ± 3.5) (P = 0.003). The mean drop in ICP in the DHC-BC group was 14.4 ± 11.5 while that in the DHC group was 18.9 ± 12.4 (P = 0.359). The average total number of hours of ICP >20 mm Hg and intracranial hypertension index were higher for the DHC-BC group. The average number of days of stay in the ICU and hospital were lower for the DHC-BC group (7.0 ± 6.1 and 15.0 ± 20.2, respectively) compared to the DHC group (10.6 ± 9.3 and 19.3 ± 13.9, respectively). The 30-day mortality rate was higher for the DHC-BC group (66.6%) than the DHC group (32.2%). The mean GCS at discharge was better in the DHC-BC group (11.7 ± 2.9) compared to 10.5 ± 3.7 in the DHC group, while 11.1% of patients in the DHC-BC group had a favorable outcome (1-month GOS-E) compared to 9.7% patients in the DHC group.

Our preliminary single-center study failed to show a clear benefit of adding basal cisternostomy to decompressive hemicraniectomy in patients with head injuries.