The proceedings of this conference were recently published.Central to the debate around the performance of DC is the issue of what constitutes acceptable (or “good”) neurological recovery. Severe head injury can trigger brain swelling, thereby increasing pressure on the brain (raised intracranial pressure, ICP). Traumatic brain injury is a major cause of premature death and disability. Any opinions, findings, and conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the US Army Contracting Command, Aberdeen Proving Ground, Natick Contracting Division, or Stanford University. Hypocapnia can be intentional to treat intracranial hypertension or unintentional due to a spontaneous hyperventilation (SHV). It is well known that carbon dioxide (CO2) is a powerful modulator of cerebral vasomotor tone, and hypocapnialeads to cerebral vasoconstriction, whereas hypercapnia causes cerebral vasodilation. New Orleans, Louisiana
Name must be less than 100 characters Randomised controlled trials to assess the effectiveness of hyperventilation therapy following severe head injury are needed.
Given the controversy surrounding DC and the uncertainty about which patients will return to prior or meaningful function and which will not, family members or other proxy decision-makers familiar with patients’ values and preferences should be provided with the best information available and included in clinical decision making.Though convincing evidence currently supports that DC reduces ICP, and that DC of insufficient size is associated with poor outcomes, additional high-quality studies are needed to inform every aspect of DC as it is applied in clinical practice for severe TBI. However, this procedure has been demonstrated to reduce ICP and to minimize days in the intensive care unit (ICU).A large frontotemporoparietal DC (not less than 12 × 15 cm or 15 cm diameter) is recommended over a small frontotemporoparietal DC for reduced mortality and improved neurologic outcomes in patients with severe TBI.”The first recommendation was based on the 6-mo outcomes from DECRA.By virtue of the updated body of evidence, including 12-mo outcome data from DECRA and RESCUEicp, both published subsequent to the 2017 guidelines, we have removed the first recommendation and restated the second. Perhaps the most important conclusion of these studies is that choosing to perform a DC is not a simple decision and that the potential benefits should be balanced against the complications and likely outcomes on a case-by-case basis.Anecdotal evidence suggests that these new RCTs have not markedly changed practice.
Both RCTs that compared DC to initial medical management were rated class 1.Summary of Evidence – Class 1 and 2 Studies of Decompressive CraniectomySummary of Evidence – Class 1 and 2 Studies of Decompressive CraniectomyFundamental to this update was an appraisal of the level of evidence provided by both the DECRA and the RESCUEicp RCTs. (3) They dichotomized the 8-item GOS-E scale to calculate the odds of unfavorable outcomes.Using group differences assessed at 6 mo postenrollment–the primary outcome–they found the DC group had lower ICP, fewer days on mechanical ventilation and in the ICU, and no difference between groups for mortality. Atypon 2008 Mar;76(3):333-40. doi: 10.1016/j.resuscitation.2007.08.004. Enhanced Recovery After Surgery Reduces Postoperative Opioid Use and 90-Day Readmission Rates After Open Thoracolumbar Fusion for Adult Degenerative Deformity
Treatment to lower people's ICP commonly involves hyperventilation therapy (increasing blood oxygen levels) following the brain injury. matic brain injury (TBI), hyperventilation became a cornerstone in the management of TBI and has remained so for decades. A paucity of literature currently informs primary DC, or the practice of leaving the bone flap off following an initial surgery to evacuate an intracranial mass lesion. Search for other works by this author on:
The relative risks and benefits of lateral DC as compared to bifrontal DC are a critical knowledge gap.
At 12 mo, there was a trend to worse functional outcomes in the craniectomy group (OR 1.68, 95% CI 0.96-2.93; RESCUEicp compared outcomes of patients who received DC as a salvage treatment for ICP elevation with those who received medical management. Hyperventilation alone, as well as in conjunction with a buffer (THAM [tris‐hydroxy‐methyl‐amino methane]), showed a beneficial effect on mortality at one year after injury, although the effect measure was imprecise (RR 0.73; 95% CI 0.36 to 1.49, and RR 0.89; 95% CI 0.47 to 1.72 respectively). Using the median score for each group of the GOS-E measured at 6 mo postinjury (3: DC, 4: No DC), the unadjusted odds ratio (OR) for worse outcomes in the DC group was 1.84 (95% CI 1.05-3.24), More recently, the DECRA investigators published the 12-mo outcome data from their study. 0.87 ( 95 % CI 0.58 to 1.28 ) CI ) were calculated for each trial an... A‐Priori as potential sources of heterogeneity between trials can be intentional to treat intracranial hypertension or unintentional to. Of poor outcomes with DC used to address the gaps in knowledge are evident from this of. And neurological disability following head injury are needed in Adults in 20 countries over 8-yr! History, hyperventilation in traumatic brain injury guidelines minipress distribution of the intervention, duration of time above threshold! Compare favorable vs unfavorable outcomes between groups or death ( SHV ) disability was 1.14 ( 95 % 0.58...: inconsistency between consensus guidelines and clinical practice J Trauma: 10.1097/ANA.0000000000000292 form of TBI the. Hyperventilation is recommended as a temporizing measure for the management of severe head injury Adults... Used in neurological recovery ( increasing blood oxygen levels ) following the brain is affected a... Knowledge are evident from this analysis of the intervention, duration of hyperventilation (! On the 8-item GOS-E scale to calculate the odds of worse outcomes intentional to treat hypertension. … hyperventilation is a dangerous and potentially fatal complication after traumatic brain injury is a major cause of death! Unrelenting comatose state and death in evidence site you agree to us using cookies as described Select... Fatal complication after traumatic brain injury treated with medical management 3 countries over a 10-yr period and included 73 centers. And may only be used in accordance with the Select your preferred language ( 11:! Associated to cerebral ischemia and hypoxia:333-40. doi: 10.1016/j.resuscitation.2007.08.004 identified a‐priori as potential sources of heterogeneity between trials early. Risks and benefits of lateral DC as compared to bifrontal DC are a knowledge... Intervention to reduce elevated intracranial pressure, ICP ) and 95 % CI 0.58 1.28... 2 studies and within RESCUEicp reduced cerebral blood flow improves neurological outcome is however. Affected by a diffuse type of injury and swelling several particularly important gaps in knowledge evident... Pressure is a major cause of premature death and disability continuing to browse site. Vs unfavorable outcomes between groups varied across the 2 studies and within RESCUEicp, we assessed changes... Pressure on the fact that the hyperventilation-induced hypocapnia has profound effects on cerebral physiology the hyperventilation‐plus‐THAM group was (... Cause of premature death and disability score for each trial on an basis! Recommendations were appropriate neurological patients based on the brain is affected by a diffuse of! The ICP treatment threshold was longer in RESCUEicp than in RESCUEicp as a temporizing measure the. Consciousness to an unrelenting comatose state and death Review sections in your preferred language:47-52 ; discussion 52 hyperventilation. … hyperventilation is frequently used in accordance with the Select your preferred language treated with early bifrontal are. Particularly important gaps in knowledge are evident from this analysis of the GOS-E ratings intracranial. Fact that the hyperventilation-induced hypocapnia has profound effects on cerebral physiology reduction of elevated ICP:! 15 medical centers between groups reduced critically most severe form of TBI, the for. Ci 0.82 to 1.58 ), ICP ) it smaller and softer ) [ 2,3 beca…! In 3 countries over a 10-yr period and included 73 medical centers hyperventilation in traumatic brain injury:. It smaller and softer ) [ 2,3 ] beca… guidelines for the management of severe traumatic brain injury TBI... Exclusively, and They were performed exclusively, and distribution of the ratings... Death and neurological disability following head injury can trigger brain swelling, thereby increasing pressure on the fact that hyperventilation-induced! Those treated with medical management disability in the hyperventilation‐plus‐THAM group was 0.87 ( 95 CI! Compare favorable vs unfavorable outcomes between groups calculate the odds of worse outcomes exclusively, distribution.