5230Association of cardiac output during targeted temperature management with mortality after out-of-hospital cardiac arrest

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
J Grand ◽  
J Kjaergaard ◽  
J Bro-Jeppesen ◽  
M Wanscher ◽  
C Hassager
Keyword(s):  
Heart Rate ◽  
Cardiac Arrest ◽  
Multivariate Analysis ◽  
Cardiac Output ◽  
Cardiac Index ◽  
Temperature Management ◽  
Research Fund ◽  
Low Cardiac Output ◽  
Time Points ◽  
Hospital Cardiac Arrest

Abstract Purpose Myocardial dysfunction and low cardiac output are common after out-of-hospital cardiac arrest (OHCA) as part of the post-cardiac arrest syndrome. This study investigates the association of cardiac output during targeted temperature management (TTM) with mortality. We hypothesized that low cardiac output during TTM is associated with mortality. Methods In the TTM-trial, which randomly allocated patients to TTM of 33°C or 36°C for 24 hours, we prospectively and consecutively monitored 171 patients with protocolized measurements from pulmonary artery catheters (PAC). Clinical and hemodynamic variables were registered at pre-specified time points in addition to 30-day survival status. Lactate, heart rate and cardiac index were measured at 3 time-points during TTM and averaged. We defined low cardiac output as a cardiac index during TTM <2.4 l/min/m2 in the TTM36-group and <1.8 l/min/m2 in the TTM33-group, since hypothermia affects cardiac output. We further stratified patients according to serum lactate (above/below 2 mmol/L) and heart rate (above/below median, which was 65 beats/min.). Results Of 152 patients with available hemodynamic measurements, 71 (47%) had low cardiac output during TTM (TTM33: 38 (49%), TTM36: 33 (44%)). Low cardiac output was not associated with mortality in univariate analysis (hazard ratio (HR): 1.47 [0.83–2.59], p=0.19) or multivariate analysis adjusted for potential confounders (HRadjusted: 0.74 [0.38–1.44], p=0.37). Low cardiac output combined with HR>65 was associated with increased mortality (HR: 2.69 [1.51–4.79], p=0.0007) in univariate, but not in multivariate analysis (p=0.22) (Figure). Low cardiac output and HR<65 was associated with decreased mortality in multivariate analysis (HRadjusted: 0.36 [0.14–0.93], p=0.03). Low cardiac output and lactate>2mmol/L was associated with increased mortality (HR: 2.73 [1.49–4.99], p=0.001) in univariate, but not in multivariate analysis (p=0.53), whereas patients with low cardiac output and lactate<2mmol/L had low mortality (HRadjusted: 0.58 [0.27–1.24], p=0.16) compared to the rest of the population (Figure). Figure 1 Conclusion This study found, that a frequent symptom during TTM is low cardiac output, which was not associated with mortality. However, patients with low cardiac output combined with either increased lactate or heart rate seems to be a population at risk. Whether low cardiac output should be corrected by inotropes or mechanical support to reduce mortality remains to be studied in prospective trials, but the efficacy of goal-directed therapy to increase cardiac output during TTM may be modest, especially if lactate and heart rate are normal. Acknowledgement/Funding The research fund Gangstedfonden and the Research fund of Rigshospitalet has supported this study with unrestricted salary in Dr. Grand's PhD project.

P6383Cardiac output during targeted temperature management and renal function after out-of-hospital cardiac arrest

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
J Grand ◽  
C Hassager ◽  
J Bro-Jeppesen ◽  
M Wanscher ◽  
J Kjaergaard
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Acute Kidney Injury ◽  
Cardiac Index ◽  
Renal Injury ◽  
Kidney Injury ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Research Fund ◽  
Hospital Cardiac Arrest

Abstract Background After resuscitation from out-of-hospital cardiac arrest (OHCA), renal injury and hemodynamic instability are common. Low blood pressure during targeted temperature management (TTM) is associated with acute renal injury (AKI). The aim of this study is to test the hypothesis, that low cardiac output during TTM is associated with acute kidney injury after OHCA. Methods Single-center substudy of 171 patients included in the prospective, randomized TTM-trial. Hemodynamic evaluation was performed with serial measurements by pulmonary artery catheter. Mean arterial pressure ≥65 mmHg and central venous pressure of 10 to 15 mmHg were hemodynamic treatment goals. Acute kidney injury (AKI) was the primary endpoint and was defined according to the KDIGO-criteria. Differences between groups were tested by repeated measurements mixed models. Measurements and main results Of 152 patients with available hemodynamic data, 49 (32%) had AKI and 21 (14%) had AKI with need for renal replacement therapy (RRT) in the first three days. At admission, cardiac index was higher in the AKI-group (mean (confidence interval): 2.6 (2.2–3.0) L/min/m2 versus 2.2 (2.0–2.3) L/min/m2, p=0.003). During 24 hours of targeted temperature management, patients with AKI had increased heart rate (11 beats/min, pgroup<0.0001) and increased lactate (1 mmol/L, pgroup<0.0001) compared to patients without AKI. However, there was no overall difference in cardiac index (pgroup = 0.25) (Figure). In multivariate models, adjusting for potential confounders including targeted temperature, mean arterial pressure (odds ratio: 0.69 (0.50–0.96) per 5 mmHg increase, p=0.03), heart rate (1.04 (1.01–1.08) per beat/min increase, p=0.01) and lactate (1.59 (1.14–2.2) per mmol/L increase, p=0.006) were independently associated with AKI, but cardiac index remained unrelated with AKI. Figure 1 Conclusions Blood pressure, heart rate and lactate, but not cardiac output, during 24 hours of targeted temperature management were associated with renal injury in comatose OHCA-patients. Acknowledgement/Funding The research fund Gangstedfonden and the Research fund of Rigshospitalet has supported this study with unrestricted salary in Dr. Grand's PhD project.

Abstract 13213: The Prognostic Role of Serum Neutrophil Gelatinase Associated Lipocalin in Out of Hospital Cardiac Arrest Patients Who Underwent Targeted Temperature Management

Circulation ◽  
2021 ◽  
Vol 144 (Suppl_2) ◽  
Author(s):  
Changjoo An ◽  
Jung Soo Park ◽  
Changshin Kang ◽  
Yeonho You
Keyword(s):  
Cardiac Arrest ◽  
Primary Outcome ◽  
False Positive Rate ◽  
Neuron Specific Enolase ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Time Points ◽  
Neutrophil Gelatinase Associated Lipocalin ◽  
Neutrophil Gelatinase ◽  
Hospital Cardiac Arrest

This study investigated the prognostic value of serum neutrophil gelatinase-associated lipocalin (NGAL) in patients treated with targeted temperature management (TTM) after out-of-hospital cardiac arrest (OHCA). The study included 85 comatose adult patients with OHCA who underwent TTM between May 2018 and December 2020. Serum NGAL and neuron-specific enolase (NSE) were measured at 24-h intervals until 72 h after return of spontaneous circulation (ROSC). The primary outcome was neurological status at 3 months after OHCA. Forty-nine patients (57.6%) had a poor neurological outcome; NGAL levels at all time points measured were significantly higher in these patients than in those with a good outcome (p<0.01). NGAL showed lower maximal sensitivity (95% CI) under a false-positive rate of 0% for the primary outcome compared with NSE (18.2% [95% CI 8.2-32.7] vs. 66.7% [95% CI 50.5-80.4]). Combination of NGAL with NSE at 48 h showed the highest sensitivity (69.1% [95% CI 52.9-82.4]) and had the highest AUC (0.91 [95% CI 0.81-0.96]) for a poor outcome. The prognostic performance of NGAL alone was inadequate at all time points. However, NGAL obtained at 24 and 48 h after ROSC showed improved sensitivity when combined with NSE. NGAL should be considered as an additional biomarker to improve accuracy for prognostication in these patients.

Abstract 338: Relationship Between Post-arrest Care Cardiac Index and Clinical Outcomes in Comatose Survivors of Out-of-hospital Cardiac Arrest: Insights From the CAPITAL-RETURN Trial

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_4) ◽  
Author(s):  
Juan J Russo ◽  
Paul Boland ◽  
Simon Parlow ◽  
Rudy Unni ◽  
Pietro Di Santo ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Cardiac Index ◽  
Clinical Outcomes ◽  
Primary Outcome ◽  
Temperature Management ◽  
Neurologic Dysfunction ◽  
Icu Admission ◽  
Shockable Rhythm ◽  
Hospital Cardiac Arrest ◽  
Capital Return

Introduction: Comatose survivors of out-of-hospital cardiac arrest (OHCA) have decreased cardiac index (CI) following return of spontaneous circulation. Although reversible, a reduced CI can contribute to cerebral hypoperfusion and impaired neurologic outcomes. We sought to examine the relationship between CI and clinical outcomes following OHCA. Methods: CAPITAL-RETURN was a prospective study examining hemodynamics in comatose survivors of OHCA undergoing targeted temperature management. Between August 2016 and December 2017, comatose survivors of OHCA with an initial shockable rhythm underwent continuous, blinded monitoring of CI using bioimpedance (Cheetah Medical, Portland, OR, USA) for 96 hours after intensive care unit (ICU) admission. In the present study, we examined the association between CI and the composite of death or severe neurologic dysfunction at 6 months (primary outcome) using logistic regression. Severe neurologic dysfunction was defined as a modified Rankin Scale score ≥4. We excluded patients who died or had withdrawal of advanced life support within 72 hours of ICU admission. Results: In 53 patients in this analysis (mean age 59±13 years, downtime 24±13 minutes, STEMI 35%), the rate of the primary outcome was 25%. The mean CI was lower in patients with (3.0±0.5 L/min/m 2 ) versus without (3.3±0.5 L/min/m 2 ) the primary outcome (p=0.018). A higher mean CI during the first 96 hours of ICU admission was associated with lower rates of the primary outcome (OR 0.85 per 0.1L/min/m 2 increase in CI; p=0.025). This association persisted after adjusting for age and downtime (OR 0.78 per 0.1L/min/m2 increase in CI; p=0.014). Cardiac index was similar in patients with versus without the primary outcome at the end of the 96-hour monitoring period (Figure). Conclusion: In comatose survivors of OHCA with an initial shockable rhythm, a higher CI during the first 96 hours of ICU admission is associated with lower rates of death or severe neurologic dysfunction.

Cardiac output during targeted temperature management and renal function after out-of-hospital cardiac arrest

2019 ◽  
Vol 54 ◽  
pp. 65-73 ◽  
Author(s):  
Johannes Grand ◽  
John Bro-Jeppesen ◽  
Christian Hassager ◽  
Malin Rundgren ◽  
Matilde Winther-Jensen ◽  
...  
Keyword(s):  
Renal Function ◽  
Cardiac Arrest ◽  
Cardiac Output ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Hospital Cardiac Arrest

scholarly journals Comparing doppler-echocardiography and thermodilution for cardiac output measurements in resuscitated out-of-hospital cardiac arrest patients undergoing targeted temperature management

2021 ◽  
Vol 10 (Supplement_1) ◽  
Author(s):  
J Grand ◽  
C Hassager ◽  
J Kjaergaard ◽  
JE Moller ◽  
J Bro-Jeppesen
Keyword(s):  
Cardiac Arrest ◽  
Cardiac Output ◽  
Doppler Echocardiography ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Limits Of Agreement ◽  
Funding Sources ◽  
The Individual ◽  
Hospital Cardiac Arrest ◽  
Cardiac Output Measurements

Abstract Funding Acknowledgements Type of funding sources: None. Background Cardiovascular dysfunction is common after out-of-hospital cardiac arrest (OHCA). Cardiac output measurements can be used to guide treatment during post-resuscitation care and echocardiography allows noninvasive cardiac output estimation. Purpose The aim of the present study was to compare Doppler echocardiography (doppler_CO) with thermodilution using pulmonary artery catheters (PAC_CO) for cardiac output estimation in a large and consecutively included cohort of comatose OHCA-patients undergoing targeted temperature management (TTM). Methods Single-center substudy of 171 patients included in the TTM-trial randomly assigned to 33 or 36 degrees C for 24 hours after OHCA. We measured PAC_CO and doppler_CO simultaneously shortly after admission and again after 24 hours. Measurements and Main Results We excluded 19 (11%) patients without PAC-measurement and 31 (18%) without doppler-measurements resulting in 120 paired measurements at admission. Patients were 61 (±11) years old, 86% were men and 91% had a witnessed OHCA. At ICU-admission, PAC_CO was 4.81 (±1.81) L/min. and doppler_CO was 3.74 (±1.38) L/min., with a mean bias of 1.07 (±1.65) L/min (with 95% limits of agreement of –2.16 to 4.04) L/min. Examining the Bland-Altman plot, precision fell with higher cardiac output  (figure). A statistically significant, but moderate correlation was found between doppler_CO and PAC_CO at admission (r = 0.49), p &lt; 0.0001). After 24 hours, PAC_CO was 4.63 (±1.38) L/min. and doppler_CO was 3.61 (±1.14) L/min, with a mean bias of 0.96 L/min. Assessing the change from admission to 24 hours, PAC_CO decreased averagely -0.12 (±2.22) L/min. and doppler_CO decreased -0.19 (±1.91) L/min. The changes from admission to 24 hours correlated between doppler_CO and PAC_CO (r = 0.55), p &lt; 0.0001) with a mean bias of the changes of 0.07 L/min, with 95% limits of agreement of –3.76 to 3.91 L/min. Conclusions Changes in cardiac output during TTM may be evaluated with Doppler echocardiography with little mean bias compared to changes in CO measured with thermodilution, but relatively large changes are needed in the individual patient before it can be considered as real. Abstract Figure. Comparing Doppler vs. thermodilution

scholarly journals Recovery from acute kidney injury is an independent predictor of survival at 30 days only after out-of-hospital cardiac arrest who were treated by targeted temperature management

2021 ◽  
Keyword(s):  
Acute Kidney Injury ◽  
Cardiac Arrest ◽  
Multivariate Analysis ◽  
Neurological Outcome ◽  
Independent Predictor ◽  
Kidney Injury ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Recovery Group ◽  
Hospital Cardiac Arrest

Background: Development of acute kidney injury (AKI) after out-of-hospital cardiac arrest (OHCA) is associated with mortality and poor neurological outcome. However, the effect of recovery from AKI after OHCA is uncertain. This study investigates whether recovery from AKI was associated with the rate of survival and neurological outcome at 30 days after OHCA. Methods: This is a prospective multicentre observational cohort study of adult OHCA patients treated with targeted temperature management (TTM) across five hospitals in South Korea between February 2019 and July 2020. AKI was diagnosed using the Kidney Disease: Improving Global Outcomes criteria. The primary outcome was the rate of survival at 30 days, and the secondary outcome was the rate of survival with a favourable neurological outcome at 30 days, defined by a score of 3 or less on the modified Rankin scale. Results: Among the 2,018 patients with OHCA, 79 were treated with TTM. After excluding two patients with incomplete data on outcomes, 77 were analysed. AKI developed in 43 (56%) patients. Among them, 22 (51%) recovered from AKI. Although the rate of survival at 30 days for the recovery group was superior to the non-recovery group (82% vs. 24%, P < 0.001), the rate of survival with a favourable neurological outcome at 30 days for the recovery group was not different than that for the non-recovery group (32% vs. 10%, P = 0.132). Recovery from AKI was an independent predictor of survival at 30 days after OHCA in the multivariate analysis (adjusted odds ratio, 22.737; 95% confidence interval, 3.814-135.533; P = 0.001); however, it was not associated with a favourable neurological outcome at 30 days after OHCA in the multivariate analysis. Conclusion: Recovery from AKI was an independent predictor of survival at 30 days only after OHCA who were treated by TTM.

scholarly journals Haemodynamics and vasopressor support during prolonged targeted temperature management for 48 hours after out-of-hospital cardiac arrest: a post hoc substudy of a randomised clinical trial

2020 ◽  
pp. 204887262093430
Author(s):  
Johannes Grand ◽  
Christian Hassager ◽  
Markus B Skrifvars ◽  
Marjaana Tiainen ◽  
Anders M Grejs ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Heart Rate ◽  
Cardiac Arrest ◽  
Mean Arterial Pressure ◽  
Arterial Pressure ◽  
Randomised Clinical Trial ◽  
Hazard Ratio ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Hospital Cardiac Arrest

Background Comatose patients admitted after out-of-hospital cardiac arrest frequently experience haemodynamic instability and anoxic brain injury. Targeted temperature management is used for neuroprotection; however, targeted temperature management also affects patients’ haemodynamic status. This study assessed the haemodynamic status of out-of-hospital cardiac arrest survivors during prolonged (48 hours) targeted temperature management at 33°C. Methods Analysis of haemodynamic and vasopressor data from 311 patients included in a randomised, clinical trial conducted in 10 European hospitals (the TTH48 trial). Patients were randomly allocated to targeted temperature management at 33°C for 24 (TTM24) or 48 (TTM48) hours. Vasopressor and haemodynamic data were reported hourly for 72 hours after admission. Vasopressor load was calculated as norepinephrine (µg/kg/min) plus dopamine(µg/kg/min/100) plus epinephrine (µg/kg/min). Results After 24 hours, mean arterial pressure (mean±SD) was 74±9 versus 75±9 mmHg ( P=0.19), heart rate was 57±16 and 55±14 beats/min ( P=0.18), vasopressor load was 0.06 (0.03–0.15) versus 0.08 (0.03–0.15) µg/kg/min ( P=0.22) for the TTM24 and TTM48 groups, respectively. From 24 to 48 hours, there was no difference in mean arterial pressure ( Pgroup=0.32) or lactate ( Pgroup=0.20), while heart rate was significantly lower (average difference 5 (95% confidence interval 2–8) beats/min, Pgroup<0.0001) and vasopressor load was significantly higher in the TTM48 group ( Pgroup=0.005). In a univariate Cox regression model, high vasopressor load was associated with mortality in univariate analysis (hazard ratio 1.59 (1.05–2.42) P=0.03), but not in multivariate analysis (hazard ratio 0.77 (0.46–1.29) P=0.33). Conclusions In this study, prolonged targeted temperature management at 33°C for 48 hours was associated with higher vasopressor requirement but no sign of any detrimental haemodynamic effects.

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