Introduction: Elective temporary clipping (ETC) is increasingly used in surgery for aneurysms. This study was to assess whether the impact of ETC on intraoperative aneurismal rupture (IAR) translates into neurological outcome.
Methods: Patients who underwent surgery for ruptured anterior circulation aneurysms were prospectively studied for various factors related to ETC, IAR and neurological outcome at 3 months. Univariate and multivariate analyses were performed using SPSS20.
Results: Of the total 273 ruptured aneurysm surgeries studied, IAR was observed in only six out of 132 aneurysms (4.5 %) who had ETC, compared with 78 out of 141 (55.3 %) without ETC (p<0.001). Aneurysms complicated by IAR had significantly longer clipping time (8.3 min) compared with those without IAR (1.9 min) (p<0.001). IAR had significant association with unfavorable outcome (38 % vs. 24 %) (p00.02). Patients with ETC had significantly shorter clipping time (2.9 min) compared with those without ETC (4.8 min) (p00.02). Unfavorable outcome was noted in 30 out of 132 with ETC (23 %), compared with 48 out of 141 without ETC (34 %) (p00.04). This beneficial effect was nonsignificantly greater in younger and good
clinical grade patients. While episodes of ETC within clipping time of 20 min did not show significant difference in outcome, repeated rescue clipping (45 % unfavorable outcome, p00.048) and total clipping time of at least 20 min (75 % unfavorable outcome, p00.008) had significant impact on outcome. In multivariate analysis, the use of ETC (p00.027) and total temporary clipping less than 20 min (p00.049) were noted to result in significantly better outcome, independent of other factors.
Conclusions: The use of ETC decreased the occurrence of IAR and the total clipping time, thereby leading to significantly better outcome, independent of other factors. While repeated elective clipping within total clipping time of 20 min did not influence outcome, repeated rescue clipping and total clipping time of at least 20 min had significant impact on outcome
Patient Care: One should not hesitate in elective temporary clipping to decrease occurrence of intraoperative aneurysm rupture, as it reduces total clipping time and leading to significantly better outcome
Learning Objectives: By the conclusion of this session , participants should know that The use of elective temporary clipping decreased the occurrence of Intra operative aneurysm rupture and the total clipping time, thereby leading to significantly better outcome