scholarly journals Trends, Predictors and Outcomes After Utilization of Targeted Temperature Management in Cardiac Arrest Patients With Anoxic Brain Injury

2020 ◽  
Vol 360 (4) ◽  
pp. 363-371
Author(s):  
Muhammad Zia Khan ◽  
Muhammad U. Khan ◽  
Kinjan Patel ◽  
Safi U. Khan ◽  
Shahul Valavoor ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Brain Injury ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Anoxic Brain Injury

scholarly journals Cerebral autoregulation in anoxic brain injury patients treated with targeted temperature management

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Ilaria Alice Crippa ◽  
Jean-Louis Vincent ◽  
Federica Zama Cavicchi ◽  
Selene Pozzebon ◽  
Filippo Annoni ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Brain Injury ◽  
Body Temperature ◽  
Hospital Discharge ◽  
Core Body Temperature ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Anoxic Brain Injury ◽  
Shockable Rhythm ◽  
Core Body

Abstract Background Little is known about the prevalence of altered CAR in anoxic brain injury and the association with patients’ outcome. We aimed at investigating CAR in cardiac arrest survivors treated by targeted temperature management and its association to outcome. Methods Retrospective analysis of prospectively collected data. Inclusion criteria: adult cardiac arrest survivors treated by targeted temperature management (TTM). Exclusion criteria: trauma; sepsis, intoxication; acute intra-cranial disease; history of supra-aortic vascular disease; severe hemodynamic instability; cardiac output mechanical support; arterial carbon dioxide partial pressure (PaCO2) > 60 mmHg; arrhythmias; lack of acoustic window. Middle cerebral artery flow velocitiy (FV) was assessed by transcranial Doppler (TCD) once during hypothermia (HT) and once during normothermia (NT). FV and blood pressure (BP) were recorded simultaneously and Mxa calculated (MATLAB). Mxa is the Pearson correlation coefficient between FV and BP. Mxa > 0.3 defined altered CAR. Survival was assessed at hospital discharge. Cerebral Performance Category (CPC) 3–5 assessed 3 months after CA defined unfavorable neurological outcome (UO). Results We included 50 patients (Jan 2015–Dec 2018). All patients had out-of-hospital cardiac arrest, 24 (48%) had initial shockable rhythm. Time to return of spontaneous circulation was 20 [10–35] min. HT (core body temperature 33.7 [33.2–34] °C) lasted for 24 [23–28] h, followed by rewarming and NT (core body temperature: 36.9 [36.6–37.4] °C). Thirty-one (62%) patients did not survive at hospital discharge and 36 (72%) had UO. Mxa was lower during HT than during NT (0.33 [0.11–0.58] vs. 0.58 [0.30–0.83]; p = 0.03). During HT, Mxa did not differ between outcome groups. During NT, Mxa was higher in patients with UO than others (0.63 [0.43–0.83] vs. 0.31 [− 0.01–0.67]; p = 0.03). Mxa differed among CPC values at NT (p = 0.03). Specifically, CPC 2 group had lower Mxa than CPC 3 and 5 groups. At multivariate analysis, initial non-shockable rhythm, high Mxa during NT and highly malignant electroencephalography pattern (HMp) were associated with in-hospital mortality; high Mxa during NT and HMp were associated with UO. Conclusions CAR is frequently altered in cardiac arrest survivors treated by TTM. Altered CAR during normothermia was independently associated with poor outcome.

Effects of Targeted Temperature Management on Drugs

2019 ◽  
pp. 963-966
Author(s):  
Lauren K. Ng Tucker
Keyword(s):  
Traumatic Brain Injury ◽  
Cardiac Arrest ◽  
Ischemic Stroke ◽  
Brain Injury ◽  
Intracranial Pressure ◽  
Bacterial Meningitis ◽  
Cerebral Hemorrhage ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
The Past

Hypothermia therapy, better known as targeted temperature management (TTM), has increased in popularity in the past several years and has only proven benefits in the setting of cardiac arrest. It has been unsuccessful or not sufficiently proven in traumatic brain injury,bacterial meningitis, cerebral hemorrhage and ischemic stroke. TTM has been shown to decrease intracranial pressure and is used in the management of refractory intracranial pressure despite recent evidence suggesting harm.

scholarly journals Arterial blood pressure during targeted temperature management after out-of-hospital cardiac arrest and association with brain injury and long-term cognitive function

2019 ◽  
Vol 9 (4_suppl) ◽  
pp. S122-S130 ◽  
Author(s):  
Johannes Grand ◽  
Gisela Lilja ◽  
Jesper Kjaergaard ◽  
John Bro-Jeppesen ◽  
Hans Friberg ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Brain Injury ◽  
Cognitive Function ◽  
Mean Arterial Pressure ◽  
Arterial Pressure ◽  
Neuron Specific Enolase ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Impaired Cognitive Function ◽  
Hospital Cardiac Arrest

Objectives: During targeted temperature management after out-of-hospital cardiac arrest infusion of vasoactive drugs is often needed to ensure cerebral perfusion pressure. This study investigated mean arterial pressure after out-of-hospital cardiac arrest and the association with brain injury and long-term cognitive function. Methods: Post-hoc analysis of patients surviving at least 48 hours in the biobank substudy of the targeted temperature management trial with available blood pressure data. Patients were stratified in three groups according to mean arterial pressure during targeted temperature management (4–28 hours after admission; <70 mmHg, 70–80 mmHg, >80 mmHg). A biomarker of brain injury, neuron-specific enolase, was measured and impaired cognitive function was defined as a mini-mental state examination score below 27 in 6-month survivors. Results: Of the 657 patients included in the present analysis, 154 (23%) had mean arterial pressure less than 70 mmHg, 288 (44%) had mean arterial pressure between 70 and 80 mmHg and 215 (33%) had mean arterial pressure greater than 80 mmHg. There were no statistically significant differences in survival ( P=0.35) or neuron-specific enolase levels ( P=0.12) between the groups. The level of target temperature did not statistically significantly interact with mean arterial pressure regarding neuron-specific enolase ( Pinteraction_MAP*TTM=0.58). In the subgroup of survivors with impaired cognitive function ( n=132) (35%) mean arterial pressure during targeted temperature management was significantly higher ( Pgroup=0.03). Conclusions: In a large cohort of comatose out-of-hospital cardiac arrest patients, low mean arterial pressure during targeted temperature management was not associated with higher neuron-specific enolase regardless of the level of target temperature (33°C or 36°C for 24 hours). In survivors with impaired cognitive function, mean arterial pressure during targeted temperature management was significantly higher.

scholarly journals Real-time quantitative monitoring of cerebral blood flow by laser speckle contrast imaging after cardiac arrest with targeted temperature management

2017 ◽  
Vol 39 (6) ◽  
pp. 1161-1171 ◽  
Author(s):  
Junyun He ◽  
Hongyang Lu ◽  
Leanne Young ◽  
Ruoxian Deng ◽  
Daniel Callow ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cardiac Arrest ◽  
Cerebral Blood Flow ◽  
Brain Injury ◽  
Laser Speckle ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Contrast Imaging ◽  
Laser Speckle Contrast Imaging ◽  
Speckle Contrast

Brain injury is the main cause of mortality and morbidity after cardiac arrest (CA). Changes in cerebral blood flow (CBF) after reperfusion are associated with brain injury and recovery. To characterize the relative CBF (rCBF) after CA, 14 rats underwent 7 min asphyxia-CA and were randomly treated with 6 h post-resuscitation normothermic (36.5–37.5℃) or hypothermic- (32–34℃) targeted temperature management (TTM) (N = 7). rCBF was monitored by a laser speckle contrast imaging (LSCI) technique. Brain recovery was evaluated by neurologic deficit score (NDS) and quantitative EEG – information quantity (qEEG-IQ). There were regional differences in rCBF among veins of distinct cerebral areas and heterogeneous responses among the three components of the vascular system. Hypothermia immediately following return of spontaneous circulation led to a longer hyperemia duration (19.7 ± 1.8 vs. 12.7 ± 0.8 min, p < 0.01), a lower rCBF (0.73 ± 0.01 vs. 0.79 ± 0.01; p < 0.001) at the hypoperfusion phase, a better NDS (median [25th–75th], 74 [61–77] vs. 49 [40–77], p < 0.01), and a higher qEEG-IQ (0.94 ± 0.02 vs. 0.77 ± 0.02, p < 0.001) compared with normothermic TTM. High resolution LSCI technique demonstrated hypothermic TTM extends hyperemia duration, delays onset of hypoperfusion phase and lowered rCBF, which is associated with early restoration of electrophysiological recovery and improved functional outcome after CA.

Does Targeted Temperature Management Improve Neurological Outcome in Extracorporeal Cardiopulmonary Resuscitation (ECPR)?

2021 ◽  
pp. 088506662110189
Author(s):  
Merry Huang ◽  
Aaron Shoskes ◽  
Migdady Ibrahim ◽  
Moein Amin ◽  
Leen Hasan ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Cardiopulmonary Resuscitation ◽  
Neurological Outcome ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Survival Outcomes ◽  
Pool Data ◽  
Good Neurological Outcome ◽  
Extracorporeal Cardiopulmonary Resuscitation ◽  
Over Time

Purpose: Targeted temperature management (TTM) is a standard of care in patients after cardiac arrest for neuroprotection. Currently, the effectiveness and efficacy of TTM after extracorporeal cardiopulmonary resuscitation (ECPR) is unknown. We aimed to compare neurological and survival outcomes between TTM vs non-TTM in patients undergoing ECPR for refractory cardiac arrest. Methods: We searched PubMed and 5 other databases for randomized controlled trials and observational studies reporting neurological outcomes or survival in adult patients undergoing ECPR with or without TTM. Good neurological outcome was defined as cerebral performance category <3. Two independent reviewers extracted the data. Random-effects meta-analyses were used to pool data. Results: We included 35 studies (n = 2,643) with the median age of 56 years (interquartile range [IQR]: 52-59). The median time from collapse to ECMO cannulation was 58 minutes (IQR: 49-82) and the median ECMO duration was 3 days (IQR: 2.0-4.1). Of 2,643, 1,329 (50.3%) patients received TTM and 1,314 (49.7%) did not. There was no difference in the frequency of good neurological outcome at any time between TTM (29%, 95% confidence interval [CI]: 23%-36%) vs. without TTM (19%, 95% CI: 9%-31%) in patients with ECPR ( P = 0.09). Similarly, there was no difference in overall survival between patients with TTM (30%, 95% CI: 22%-39%) vs. without TTM (24%, 95% CI: 14%-34%) ( P = 0.31). A cumulative meta-analysis by publication year showed improved neurological and survival outcomes over time. Conclusions: Among ECPR patients, survival and neurological outcome were not different between those with TTM vs. without TTM. Our study suggests that neurological and survival outcome are improving over time as ECPR therapy is more widely used. Our results were limited by the heterogeneity of included studies and further research with granular temperature data is necessary to assess the benefit and risk of TTM in ECPR population.

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