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Four-quadrant osteoplastic decompressive craniotomy: A novel technique for refractory intracranial hypertension - A
Anil Kumar Peethambaran1, Vinu V Gopal, Jiji Valsalamony
1Department of Neurosurgery, Government Medical College, Trivandrum, Kerala, India.
Insights
Four-quadrant osteoplastic decompressive craniotomy (FoQOsD) offers a novel approach to managing refractory intracranial hypertension, showing comparable efficacy to conventional decompressive craniectomy (DC). This technique may reduce the need for subsequent bone flap replacement surgery.
Area of Science:
- Neurosurgery
- Critical Care Medicine
Background:
- Decompressive craniectomy (DC) with duroplasty is standard for refractory intracranial hypertension, but associated morbidities, particularly bony defects, are significant.
- Replacement of the bone flap after DC can reverse many associated morbidities.
Purpose of the Study:
- To introduce and evaluate a novel technique, four-quadrant osteoplastic decompressive craniotomy (FoQOsD), for controlling refractory intracranial pressure (ICP).
- To assess the safety and efficacy of FoQOsD in comparison to conventional DC.
Main Methods:
- A prospective, comparative, observational pilot study was conducted.
- FoQOsD was compared with conventional DC in 20 patients (10 per group).
- Outcomes analyzed included operating time, ICU stay, survival, midline shift (MLS) change, and brain expansion.
Main Results:
- Both groups demonstrated comparable surgical duration, ICU stay, and survival rates.
- FoQOsD showed significant brain expansion and MLS reversal, comparable to conventional DC.
- Patient demographics were similar between the FoQOsD and DC groups.
Conclusions:
- FoQOsD appears to be as effective as conventional DC for managing intracranial hypertension.
- The FoQOsD procedure may eliminate the need for revision cranioplasty.
- Further investigation via a large-scale prospective randomized controlled trial is recommended.
Background:
Decompressive craniectomy (DC) with duroplasty is the gold standard for refractory intracranial hypertension despite paucity of randomized controlled trials. There are several morbidities associated with DC of which the persistence of bony defect is of paramount importance. Studies have shown that many of the morbidities associated with DC get reversed following replacement of the bone flap.
Aim:
To design a novel technique for control of refractory intracranial pressure (ICP), as well as to study its safety and efficacy compared to the conventional DC technique.
Material And Methods:
We conducted a prospective, comparative, observational pilot study comparing four-quadrant osteoplastic decompressive craniotomy (FoQOsD) with conventional DC. The demographic features, postoperative variables such as operating time, number of days of intensive care unit (ICU) stay and survival, as well as radiographic variables such as change in the midline shift (MLS) and expansion of the compressed brain were analyzed using relevant statistical tests.
Results:
Twenty patients were selected and grouped into two groups of 10 patients each. The male: female ratio in the two groups were 8:2 and 7:3, respectively, and the mean age at presentation was 42.7 ± 1.45 years in the FoQOsD group and 43.6 ± 1.32 years in the DC group. Both the groups were comparable in relation to the duration of surgery, duration of ICU stay, and survival (P > 0.05). There was significant brain expansion and reversal of MLS (P < 0.001) in the FoQOsD group, factors which were comparable to that in the DC group.
Conclusions:
FoQOsD may be as effective as conventional DC in managing intracranial hypertension. This procedure mainly avoids a revision cranioplasty. A prospective randomized controlled trial with a large sample size may be initiated for obtaining more accurate data.
