Associations between early intra-arrest blood acidaemia and outcomes of adult in-hospital cardiac arrest: A retrospective cohort study.

BACKGROUND: Resuscitation guidelines list acidaemia as a potentially reversible cause of cardiac arrest without specifying the threshold defining acidaemia. We examined the association between early intra-arrest arterial blood gas (ABG) data and outcomes of in-hospital cardiac arrest (IHCA). METHODS: This single-centred retrospective study reviewed patients with IHCA between 2006 and 2015. Early intra-arrest ABG data were measured within 10 min of initiating cardiopulmonary resuscitation. The ABG analysis included measurements of blood pH, PaCO2, and HCO3-. RESULTS: Among the 1065 included patients, 60 (5.6%) achieved neurologically intact survival. Mean blood pH was 7.2. Mean PaCO2 and HCO3- levels were 59.7 mmHg and 22.1 mmol/L, respectively. A blood pH of 7.2 was identified by a generalised additive models plot to define severe acidaemia. The PaCO2 level was higher in patients with severe acidaemia (mean: 74.5 vs. 44.1 mmHg) than in those without. Multivariable logistic regression analyses indicated that blood pH > 7.2 was associated with a favourable neurological recovery (odds ratio [OR]: 2.79, 95% confidence interval [CI]: 1.43-5.46; p-value = 0.003) and blood pH was positively associated with survival at hospital discharge (OR: 5.80, 95% CI: 1.62-20.69; p-value = 0.007). CONCLUSION: Early intra-arrest blood pH was associated with IHCA outcomes, while levels of PaCO2 and HCO3- were not. A blood pH of 7.2 could be used as the threshold defining severe acidaemia during arrest and help profile patients with IHCA. Innovative interventions should be developed to improve the outcomes of patients with severe acidaemia, such as novel ventilation methods.

Outcomes associated with amiodarone and lidocaine for the treatment of adult in-hospital cardiac arrest with shock-refractory pulseless ventricular tachyarrhythmia.

BACKGROUND: To determine the association between amiodarone or lidocaine and outcomes in adult in-hospital cardiac arrest (IHCA) with shock-refractory ventricular fibrillation (VF) or pulseless ventricular tachycardia (pVT). METHODS: A retrospective study in a single medical centre was conducted. Patients experiencing an IHCA between 2006 and 2015 were screened. Shock-refractory ventricular tachyarrhythmias were defined as VF/pVT requiring more than one defibrillation attempt. A multivariate logistic regression analysis was used to study the associations between the independent variables and outcomes. RESULTS: A total of 130 patients were included. Among these, 113 patients (86.9%) were administered amiodarone as the first antiarrhythmic agent (amiodarone first) following VF/pVT, and the other patients were administered lidocaine (lidocaine first). The median time to the first defibrillation and first antiarrhythmic drug administration were 2 and 9 min, respectively. The analysis demonstrated that the amiodarone-first group experienced a higher likelihood of terminating the VF/pVT within three shocks (odds ratio: 11.61, 95% confidence interval: 1.34-100.84; p-value = 0.03), as compared with the lidocaine-first group. However, there were no significant differences between the amiodarone- and lidocaine-first groups in sustained return of spontaneous circulation, survival for 24 h, survival, or favourable neurological outcomes at hospital discharge. CONCLUSION: For patients with IHCA and shock-refractory VF/pVT, the adoption of an amiodarone-first strategy seemed to be associated with the termination of VF/pVT using fewer shocks. Nonetheless, because of the small sample size, additional large-scale studies should be conducted to investigate whether this advantage could be translated into a long-term benefit in survival or neurological outcomes.

Postarrest Steroid Use May Improve Outcomes of Cardiac Arrest Survivors.

OBJECTIVES: To evaluate the ramifications of steroid use during postarrest care. DESIGN: Retrospective observational population-based study enrolled patients during years 2004-2011 with 1-year follow-up. SETTING: Taiwan National Health Insurance Research Database. PATIENTS: Adult nontraumatic cardiac arrest patients in the emergency department, who survived to admission. INTERVENTIONS: These patients were classified into the steroid and nonsteroid groups based on whether steroid was used or not during hospitalization. A propensity score was used to match patient underlying characteristics, steroid use prior to cardiac arrest, the vasopressors, and shockable rhythm during cardiopulmonary resuscitation, hospital level, and socioeconomic status. MEASUREMENTS AND MAIN RESULTS: There were 5,445 patients in each group after propensity score matching. A total of 4,119 patients (75.65%) in the steroid group died during hospitalization, as compared with 4,403 patients (80.86%) in the nonsteroid group (adjusted hazard ratio, 0.74; 95% CI, 0.70-0.77; p < 0.0001). The mortality rate at 1 year was significantly lower in the steroid group than in the nonsteroid group (83.54% vs 87.77%; adjusted hazard ratio, 0.73; 95% CI, 0.70-0.76; p < 0.0001). Steroid use during hospitalization was associated with survival to discharge, regardless of age, gender, underlying diseases (diabetes mellitus, chronic obstructive pulmonary disease, asthma), shockable rhythm, and steroid use prior to cardiac arrest. CONCLUSIONS: In this retrospective observational study, postarrest steroid use was associated with better survival to hospital discharge and 1-year survival.

Diuretic or Beta-Blocker for Hypertensive Patients Already Receiving ACEI/ARB and Calcium Channel Blocker.

BACKGROUND: In patients already receiving combination of angiotensin-converting enzyme inhibitor (ACEI)/angiotensin receptor blocker (ARB) and calcium channel blocker (CCB), whether the choice of additional diuretic or beta-blocker affects the cardiovascular and cerebrovascular outcomes remains unclear. METHODS: A total of 13,551 patients who were concurrently receiving three anti-hypertensive agents of different classes through outpatient clinics during 2004-2006 were identified from the National Health Insurance Research Database of Taiwan. Patients were further classified into two treatment groups according to the medication possession ratio of drug combinations; the A + B + C group as those who received concurrent therapy of ACEI/ARB, beta-blocker and CCB. The A + C + D group as patients who received ACEI/ARB, CCB, and diuretics. The event-free survival of stroke, acute myocardial infarction (AMI), mortality, and major adverse cardiovascular events (MACE) between the two treatment groups was investigated. RESULTS: After propensity score matching, there were 5120 patients in each group. There were no differences in the incidence of cardiovascular events between the two groups. In patients with prior history of cerebrovascular accident (CVA), the A + C + D group had a significantly higher AMI-free survival (adjusted HR = 1.56; 95% CI 1.051-2.307; p < 0.05) as compared with the A + B + C group. CONCLUSION: Adding a diuretic may be better than adding a beta-blocker for treating hypertensive patients with prior CVA history who have already received ACEIs/ARBs and CCBs.

Associations between blood glucose level and outcomes of adult in-hospital cardiac arrest: a retrospective cohort study.

BACKGROUND: We intended to analyse the associations between blood glucose (BG) level and clinical outcomes of in-hospital cardiac arrest (IHCA). METHODS: We conducted a retrospective observational study in a single medical centre and evaluated patients who experienced IHCA between 2006 and 2014. We used multivariable logistic regression analysis to study associations between independent variables and outcomes. We calculated the mean BG level for each patient by averaging the maximum and minimum BG levels in the first 24 h after arrest, and we used mean BG level for our final analysis. RESULTS: We included a total of 402 patients. Of these, 157 patients (39.1 %) had diabetes mellitus (DM). The average mean BG level was 209.9 mg/dL (11.7 mmol/L). For DM patients, a mean BG level between 183 and 307 mg/dL (10.2-17.1 mmol/L) was significantly associated with favourable neurological outcome (odds ratio [OR] 2.71, 95 % confidence interval [CI] 1.18-6.20; p value = 0.02); a mean BG level between 147 and 317 mg/dL (8.2-17.6 mmol/L) was significantly associated with survival to hospital discharge (OR 2.38, 95 % CI 1.26-4.53; p value = 0.008). For non-DM patients, a mean BG level between 143 and 268 mg/dL (7.9-14.9 mmol/L) was significantly associated with survival to hospital discharge (OR 2.93, 95 % CI 1.62-5.40; p value < 0.001). CONCLUSIONS: Mean BG level in the first 24 h after cardiac arrest was associated with neurological outcome for IHCA patients with DM. For neurological and survival outcomes, the optimal BG range may be higher for patients with DM than for patients without DM.

Monitoring of serum lactate level during cardiopulmonary resuscitation in adult in-hospital cardiac arrest.

INTRODUCTION: Serum lactate level may correlate with no-flow and low-flow status during cardiac arrest. Current guidelines have no recommended durations for cardiopulmonary resuscitation (CPR) before transition to the next strategy. We hypothesized that the lactate level measured during CPR could be associated with the survival probability and accordingly be useful in estimating the optimal duration for CPR. METHODS: We conducted a retrospective observational study in a single medical centre and included adult patients who had suffered an in-hospital cardiac arrest between 2006 and 2012. We used multivariable logistic regression analysis to study the association of lactate level measured during CPR and outcomes. We used generalized additive models to examine the nonlinear effects of continuous variables and conditional effect plots to visualize the estimated survival probability against CPR duration. RESULTS: Of the 340 patients included in our analysis, 50 patients (14.7 %) survived to hospital discharge. The mean lactate level was 9.6 mmol/L and mean CPR duration was 28.8 min. There was an inverse near-linear relationship between lactate level and probability of survival to hospital discharge. A serum lactate level <9 mmol/L was positively associated with patient survival to hospital discharge (odds ratio 2.00, 95 % confidence interval 1.01-4.06). The optimal CPR duration may not be a fixed value but depend on other conditions. CONCLUSIONS: Serum lactate level measured during CPR could correlate with survival outcomes. A lactate level threshold of 9 mmol/L may be used as a reference value to identify patients with different survival probabilities and determine the optimal CPR durations.

Prolonged cooling duration mitigates myocardial and cerebral damage in cardiac arrest.

BACKGROUND: The purpose of this study was to investigate the effect of prolonged cooling on cardiac and cerebral injury in animals under cardiac arrest. METHODS: Adult male Wistar rats were equally randomized to normothermia, 5H1, 5H2, 7H1, 7H2, and 7H4 groups. The first number in the group name indicated ventricular fibrillation duration (minutes), the middle H indicated hypothermia, and the last number signified hypothermia duration (hours). Ventricular fibrillation was induced and untreated for 5 minutes (normothermia, 5H1, and 5H2) or 7 minutes (7H1, 7H2, and 7H4) followed by 1 minute of cardiopulmonary resuscitation followed by electric shocks. Hypothermia was initiated simultaneously with cardiopulmonary resuscitation initiation and maintained for 1 hour (5H1 and 7H1), 2 hours (5H2 and 7H2) or 4 hours (7H4). RESULTS: There were 12 rats in each group. Compared with the 7H1 group, the 7H4 group had significantly better systolic function (dp/dt40) and cardiac output within the early postcardiac arrest period. Histologic examination disclosed less myocardial and hippocampal damage in the 7H4 group than the 7H1 group and in the 5H2 group than the 5H1 group. Plasma troponin I, fatty acid-binding protein, and S-100ß concentrations were significantly lower in the 7H4 and 5H2 groups. The 7H4 and 5H2 groups survived statistically longer than the groups with shorter cooling duration. CONCLUSION: Slightly prolonging hypothermia may mitigate myocardial and cerebral damage and improve survival and neurologic outcomes in a rat model of ventricular fibrillation cardiac arrest.

Prior beta-blocker treatment improves outcomes in out-of-hospital cardiac arrest patients with non-shockable rhythms.

The prognosis of out of cardiac arrest is poor and most cardiac arrest patients suffered from the non-shockable rhythm especially in patients without pre-existing cardiovascular diseases and medication prescription. Beta-blocker (ß-blocker) therapy has been shown to improve outcomes in cardiovascular diseases such as heart failure, ischemia related cardiac, and brain injuries. Therefore, we investigated whether prior ß-blockers use was associated with reduced mortality in patients with cardiac arrest and non-shockable rhythm. We conducted a population-based retrospective cohort study using multivariate propensity score-based regression to control for differences among patients with cardiac arrest. A total of 104,568 adult patients suffering a non-traumatic and non-shockable rhythm cardiac arrest between 2005 and 2011 were identified. ß-blocker prescription at least 30 days prior to the cardiac arrest event was defines as the ß-blockers group. We chose 12.5 mg carvedilol as the cut-off value and defined greater or equal to carvedilol 12.5 mg per day and its equivalent dose as high-dose group. After multivariate propensity score-based logistic regression analysis, patients with prior ß-blockers use were associated with better 1-year survival [adjusted odds ratio (OR), 1.15, 95% confidence interval (CI) 1.01-1.30; P = 0.031]. Compared to non-ß-blocker use group and prior low-dose ß-blockers use group, prior high-dose ß-blockers use group was associated with higher mechanical ventilator wean success rate (adjusted OR 1.19, 95% CI 1.01-1.41, P = 0.042). In conclusion, prior high dose ß-blockers use was associated with a better 1-year survival and higher weaning rate in patients with non-shockable cardiac arrest.

Associations between intra-arrest blood glucose level and outcomes of adult in-hospital cardiac arrest: A 10-year retrospective cohort study.

AIM: We attempted to examine the association between intra-arrest blood glucose (BG) level and outcomes of in-hospital cardiac arrest (IHCA). The interaction between diabetes mellitus (DM) and BG level as well as between dextrose administration and BG level were investigated. METHODS: This single-centred retrospective study reviewed IHCA patients between 2006 and 2015. Patients with measured intra-arrest BG levels were included. Multivariable logistic regression analyses were conducted. Generalised additive models were used to identify appropriate cut-off points for continuous variables. Interactions between independent variables were assessed during the model-fitting process. RESULTS: Among the 580 included patients, 34 (5.9%) achieved neurologically intact survival. There were 197 DM patients (34.0%). The mean intra-arrest BG level was 191.5 mg/dl, with 57 patients (9.8%) experiencing hypoglycaemia (BG level ≤ 70 mg/dl). A total of 165 patients (28.4%) received a dextrose injection. An intra-arrest BG level ≤ 150 mg/dl was inversely associated with favourable neurological outcomes at hospital discharge (odds ratio [OR]: 0.28, 95% confidence interval [CI]: 0.11-0.73; p-value = 0.01). In analyses of interactions, non-DM × BG level ≤ 168 mg/dl was inversely associated with favourable neurological outcomes (OR: 0.30, 95% CI: 0.11-0.80; p-value = 0.02). There were no significant interactions between BG level and dextrose administration. CONCLUSION: IHCA patients with intra-arrest BG level ≤ 150 mg/dl had worse neurological recovery. Intra-arrest hypoglycaemia might be a marker of critical illness. Dextrose administration was not shown to improve outcomes of IHCA patients with intra-arrest BG level ≤ 150 mg/dl, indicating the need to develop new therapeutics other than dextrose administration for these patients.

Modulating effects of immediate neuroprognosis on early coronary angiography and targeted temperature management following out-of-hospital cardiac arrest: A retrospective cohort study.

AIM: The simplified cardiac arrest hospital prognosis (sCAHP) score is a validated tool for predicting neurological outcomes after out-of-hospital cardiac arrest (OHCA). We used the sCAHP score to evaluate whether the effects of early coronary angiography (CAG) and targeted temperature management (TTM) for OHCA were modulated by immediate neuroprognosis. METHODS: This was a single-centre retrospective observational study. Consecutive OHCA patients were screened between 2011 and 2017. Multivariate logistic regression analysis and generalised additive models (GAMs) were used to examine the associations between independent variables and outcomes. Early CAG was defined as CAG performed within 24 h after return of spontaneous circulation (ROSC). RESULTS: A total of 412 patients were included in the study, and 94 (22.8%) patients had neurologically intact survival. The GAM plot identified a sCAHP score of 185 as the cut-off point to differentiate high-risk (sCAHP score ≧185) from low-risk (sCAHP score <185) patients. Regression models indicated that early CAG was significantly associated with favourable neurological [odds ratio (OR) 4.43, 95% confidence interval (CI) 2.28-8.60, p < 0.001] and survival outcomes (OR 3.47, 95% CI 1.93-6.25, p < 0.001), independent of the sCAHP score. Although TTM was associated with favourable neurological outcome only in low-risk patients (OR 2.13, 95% CI 1.10-4.13, p = 0.02), TTM was associated with improved survival for all patients (OR 2.66, 95% CI 1.54-4.59, p < 0.001), independent of the sCAHP score. CONCLUSIONS: Early CAG and TTM should be considered for all OHCA patients as suggested by guidelines, irrespective of the immediately predicted neuroprognosis after ROSC.

Factors associated with the decision to terminate resuscitation early for adult in-hospital cardiac arrest: Influence of family in an East Asian society.

BACKGROUND: We attempted to identify factors associated with physicians' decisions to terminate CPR and to explore the role of family in the decision-making process. METHODS: We conducted a retrospective observational study in a single center in Taiwan. Patients who experienced in-hospital cardiac arrest (IHCA) between 2006 and 2014 were screened for study inclusion. Multivariate survival analysis was conducted to identify independent variables associated with IHCA outcomes using the Cox proportional hazards model. RESULTS: A total of 1525 patients were included in the study. Family was present at the beginning of CPR during 722 (47.3%) resuscitation events. The median CPR duration was significantly shorter for patients with family present at the beginning of CPR than for those without family present (23.5 mins vs 30 min, p = 0.01). Some factors were associated with shorter time to termination of CPR, including arrest in an intensive care unit, Charlson comorbidity index score greater than 2, age older than 79 years, baseline evidence of motor, cognitive, or functional deficits, and vasopressors in place at time of arrest. After adjusting for confounding effects, family presence was associated with shorter time to termination of CPR (hazard ratio, 1.25; 95% confidence interval, 1.06-1.46; p = 0.008). CONCLUSION: Clinicians' decisions concerning when to terminate CPR seemed to be based on outcome prognosticators. Family presence at the beginning of CPR was associated with shorter duration of CPR. Effective communication, along with outcome prediction tools, may avoid prolonged CPR efforts in an East Asian society.

Relationship Between Statin Use and Outcomes in Patients Having Cardiac Arrest (from a Nationwide Cohort Study in Taiwan).

Pretreatment with statins is associated with improved outcomes in severe sepsis, acute coronary syndrome, and stroke. Patients with cardiac arrest experience sepsis-like syndrome and ischemia reperfusion injuries in the heart and brain. The objective of this study was to investigate the effects of statin use before cardiac arrest on outcomes in cardiac arrest patients. Medical records of 142,131 adult patients who experienced nontraumatic cardiac arrest and were resuscitated between 2004 and 2011 were analyzed. Patients were grouped into 2 groups: the "statin group" comprised patients who had received statin treatment for at least 30 days before the cardiac arrest event; the "never statin group" comprised patients who had no statin use within 30 days before the event. Patients with previous statin treatment had better chance of survival to hospital discharge (6.1% vs 4.3%, p <0.0001) and 1-year survival (4.8% vs 3.2%, p <0.0001) after propensity score matching. Previous statin use was an independent predictor for 1-year survival (adjusted odds ratio 1.41, 95% confidence interval 1.16 to 1.71; p = 0.001). A favorable outcome effect of statin on 1-year survival was observed in the presence of diabetes mellitus, chronic kidney disease, and Charlson Comorbidity Index score greater than 5 in the subgroup analysis. In conclusion, statin use before cardiac arrest is associated with 1-year survival in a propensity score-matched nationwide cohort study.

Prognostic performance of simplified out-of-hospital cardiac arrest (OHCA) and cardiac arrest hospital prognosis (CAHP) scores in an East Asian population: A prospective cohort study.

AIM: The out-of-hospital cardiac arrest (OHCA) and cardiac arrest hospital prognosis (CAHP) scores were developed for early neuroprognostication after OHCA. Calculation of both scores requires estimation of the no-flow interval, which may be imprecise. We aimed to validate simplified OHCA and CAHP scores, which exclude the no-flow interval, in an East Asian cohort. METHODS: This was a single-centre prospective observational study. Consecutive OHCA patients were screened between January 2011 and March 2017. Simplified OHCA and CAHP scores (sOHCA, sCAHP) were calculated as the original scores with the no-flow interval omitted. Association between independent variables and outcomes was examined by multivariate logistic regression analysis, and area under the receiver operating characteristics curve (AUC) values were compared by paired DeLong test. RESULTS: A total of 412 patients were included. An inverse association between sOHCA and sCAHP scores and neurological outcome was confirmed, and most of the variables included in the simplified score calculations were also independently associated with neurological outcomes in our cohort. The AUC values for the simplified scores were similar, and both had excellent discriminatory performance for favourable neurologic outcome (AUC = 0.82, 95% confidence interval 0.77-0.86 for sOHCA and 0.84 with 95% confidence interval 0.80-0.89 for sCAHP, p-value = 0.19). CONCLUSION: The simplified OHCA and CAHP scores predicted neurological outcomes in successfully resuscitated East Asian OHCA patients with similar and excellent accuracy. The simplified OHCA and CAHP scores could potentially serve alongside the original scores as risk-adjustment tools for comparison of outcomes between regional OHCA registries worldwide.

The association between long-term glycaemic control, glycaemic gap and neurological outcome of in-hospital cardiac arrest in diabetics: A retrospective cohort study.

AIM: Resuscitation guidelines do not recommend a target blood glucose (BG) level specifically tailored for diabetics experiencing an in-hospital cardiac arrest (IHCA). The glycosylated haemoglobin (HbA1c) level may be associated with neurological prognosis and used to identify the optimal BG level for diabetic IHCA patients. METHODS: This study was a retrospective study in a single medical centre. Patients with an IHCA between 2006 and 2015 were screened. The estimated average glucose (eAG) level was converted from the HbA1c level measured within three months prior to the IHCA. The minimum glycaemic gap was calculated from the post-resuscitation minimum BG level minus the eAG level. RESULTS: A total of 141 patients were included in this study. The mean HbA1c was 7.2% (corresponding eAG: 160.2 mg/dL [8.9 mmol/L]). Multivariable logistic regression analysis indicated an eAG level of less than 196 mg/dL (10.9 mmol/L; corresponding HbA1c: 8.5%) was positively associated with a favourable neurological outcome at hospital discharge (odds ratio [OR]: 5.12, 95% confidence interval [CI]: 1.11-23.70; p-value = 0.04). An absolute minimum glycaemic gap of less than 70 mg/dL (3.9 mmol/L) was also positively associated with a favourable neurological outcome (OR: 5.41, 95% CI: 1.41-20.78; p-value = 0.01). CONCLUSION: For diabetic patients, poor long-term glycaemic control correlated with worse neurological recovery following an IHCA. The HbA1c-derived average BG level could be used as a reference point for glycaemic management during the early stage of post-cardiac arrest syndrome. The glycaemic gap could be used to identify the optimal glycaemic range around the reference point.

Validation of the Cardiac Arrest Survival Postresuscitation In-hospital (CASPRI) score in an East Asian population.

BACKGROUND: The Cardiac Arrest Survival Postresuscitation In-hospital (CASPRI) score is a useful tool for predicting neurological outcome following in-hospital cardiac arrest (IHCA), and was derived from a cohort selected from the Get With The Guidelines-Resuscitation registry between 2000 and 2009 in the United States. In an East Asian population, we aimed to identify the factors associated with outcomes of resuscitated IHCA patients and assess the validity of the CASPRI score. METHODS: A retrospective study was conducted in a single centre in Taiwan. Patients with IHCA between 2006 and 2014 were screened. RESULTS: Among the 796 included patients, 94 (11.8%) patients achieved neurologically intact survival. Multivariable logistic regression analyses identified factors significantly associated with neurological outcome. Six of these factors were also components of the CASPRI score, including duration of resuscitation, neurological status before IHCA, malignant disease, initial arrest rhythms, renal insufficiency and age. In univariate logistic regression analysis, the CASPRI score was significantly associated with neurological outcome (odds ratio [OR]: 0.83, 95% confidence interval [CI]: 0.80-0.87); the area under the receiver operating characteristics curve was 0.79 (95% CI: 0.74-0.84). CONCLUSION: In this retrospective study conducted in a single centre at Taiwan, we identified the common prognosticators of IHCA shared by both East Asian and Western societies. As a composite prognosticator, CASPRI score predicts outcomes with excellent accuracy among successfully resuscitated IHCA patients in an East Asian population. This tool allows accurate IHCA prognostication in an East Asian population.

Associations between body size and outcomes of adult in-hospital cardiac arrest: A retrospective cohort study.

AIM: Animal studies have demonstrated that hemodynamic-directed cardiopulmonary resuscitation (CPR) improves outcomes following cardiac arrest compared with the "one-size-fits-all" algorithm. We investigated whether body size of patients is correlated with outcomes of in-hospital cardiac arrest (IHCA). METHODS: A retrospective study in a single centre was conducted. Adult patients experiencing IHCA between 2006 and 2015 were screened. Body mass index (BMI) was calculated using body weight and height measured at hospital admission. Thoracic anteroposterior diameter (APD) was measured by analysing computed tomography images. Multivariate logistic regression analysis was used to study the associations between independent variables and outcomes. Generalised additive models were used to identify cut-off points for continuous variables. RESULTS: A total of 766 patients were included, and 60.4% were male. Their mean age was 62.8 years. Mean BMI was 22.9 kg/m2, and the mean thoracic APD was 21.4 cm. BMI > 23.2 kg/m2 was inversely associated with a favourable neurological outcome (odds ratio [OR]: 0.30, 95% confidence interval [CI]: 0.13-0.68; p-value = 0.004), while thoracic APD was not. When the interaction term was analysed, BMI > 23.2 (kg/m2) × thoracic APD > 18.5 (cm) was inversely associated with both a favourable neurological outcome (OR: 0.33, 95% CI: 0.16-0.69; p-value = 0.003) and survival to hospital discharge (OR: 0.46, 95% CI: 0.26-0.81; p-value = 0.007). CONCLUSION: Higher BMI and thoracic APD was correlated with worse outcomes following IHCA. For those patients, it might be better to perform CPR under guidance of physiological parameters rather than a "one-size-fits-all" resuscitation algorithm to improve outcomes.

Outcomes of adults with in-hospital cardiac arrest after implementation of the 2010 resuscitation guidelines.

BACKGROUND: The 2015 guidelines for cardiopulmonary resuscitation (CPR) are based on an update of the 2010 guidelines with minor revisions. It is important to assess the 2010 guidelines to ensure their efficacy, which may help promote widespread adoption of the 2015 guidelines. METHODS: We conducted a retrospective observational study in a single center that evaluated patients with in-hospital cardiac arrest (IHCA) between 2006 and 2014. Multivariable logistic regression analysis was used to evaluate associations between independent variables and outcomes. RESULTS: A total of 1525 patients were included. For patients with initial non-shockable rhythms, the elapsed time to first adrenaline injection was significantly shorter for patients who received CPR according to the 2010 guidelines (2010-CPR) than for those who were treated according to the 2005 guidelines (2005-CPR). During post-cardiac arrest care, the percentage of patients with fever was significantly lower and the implementation of critical interventions was significantly higher in patients who received 2010-CPR than in those who received 2005-CPR. After adjusting for the effects of confounding factors, patients who received 2010-CPR had improved neurological outcomes (odds ratio [OR], 1.75; 95% confidence interval [CI], 1.05-2.93; p=0.03) and survival (OR, 1.50; 95% CI, 1.06-2.12; p=0.02) at hospital discharge than patients who received 2005-CPR. CONCLUSIONS: Hospital adoption of the 2010 guidelines may improve the neurological and survival outcomes for IHCA patients. This improvement might result from an emphasis on the importance of high-quality CPR, post-cardiac arrest care, and teamwork in the 2010 guidelines.

Data for outcomes of acute hospital administration of amiodarone and/or lidocaine in shockable patients presenting with out-of-hospital cardiac arrest.

The data presented in this article are related to the research article entitled "Acute Hospital Administration of Amiodarone and/or Lidocaine in Shockable Patients Presenting with Out-of-hospital Cardiac Arrest: A Nationwide Cohort Study" (C.H. Huang, P.H. Yu, M.S. Tsai et al., 2016) [1]. The data contains the information of co-morbidities coding from ICD-9 CM codes and specific difference in requirement between medical centers and non-medical centers in resuscitation. Univariate and multivariate logistic regression analysis for factors related to the outcome of survival to ICU admission and survival to hospital discharge are included in the data set. The data also contains bootstrap sensitivity analysis of the logistic regression model for survival to ICU admission and hospital discharge outcomes in out-of-hospital cardiac arrest. Subgroup analysis of epinephrine dosage related to outcome of one-year survival is shown.

Acute hospital administration of amiodarone and/or lidocaine in shockable patients presenting with out-of-hospital cardiac arrest: A nationwide cohort study.

BACKGROUND: Terminating ventricular fibrillation (VF) or pulseless ventricular tachyarrhythmia (VT) is critical for successful resuscitation of patients with shockable cardiac arrest. In the event of shock-refractory VF, applicable guidelines suggest use of anti-arrhythmic agents. However, subsequent long-term outcomes remain unclear. A nationwide cohort study was therefore launched, examining 1-year survival rates in patients given amiodarone and/or lidocaine for cardiac arrest. METHODS: Medical records accruing between years 2004 and 2011 were retrieved from the Taiwan National Health Insurance Research Database (NHIRD) for review. This repository houses all insurance claims data for nearly the entire populace (>99%). Candidates for study included all non-traumatized adults receiving DC shock and cardiopulmonary resuscitation immediately or within 6h of emergency room arrival. Analysis was based on data from emergency rooms and hospitalization. RESULTS: One-year survival rates by treatment group were 8.27% (534/6459) for amiodarone, 7.15% (77/1077) for lidocaine, 11.10% (165/1487) for combined amiodarone/lidocaine use, and 3.26% (602/18,440) for use of neither amiodarone nor lidocaine (all, p<0.0001). Relative to those given neither medication, odds ratios for 1-year survival via multiple regression analysis were 1.84 (95% CI: 1.58-2.13; p<0.0001) for amiodarone, 1.88 (95% CI: 1.40-2.53; p<0.0001) for lidocaine, and 2.18 (95% CI: 1.71-2.77; p<0.0001) for dual agent use. CONCLUSIONS: In patients with shockable cardiac arrest, 1-year survival rates were improved with association of using amiodarone and/or lidocaine, as opposed to non-treatment. However, outcomes of patients given one or both medications did not differ significantly in intergroup comparisons.

Associations among gender, marital status, and outcomes of adult in-hospital cardiac arrest: A retrospective cohort study.

AIM: To analyse the association between gender and outcomes of in-hospital cardiac arrest (IHCA) and the influences of age and marital status on the gender-based difference in clinical outcome. METHODS: This retrospective observational study conducted in a single medical centre evaluated patients who had experienced IHCA from 2006 to 2014. Multivariate logistic regression analysis was used to study associations between independent variables and outcomes. Patients 18-49 years old were considered of reproductive age. The presence or absence of a legitimate spouse was retrieved from the family pedigree presented in the medical records. Reproductive age and marital status were each analysed as an interaction term with gender. RESULTS: A total of 1524 patients, of which 598 were women (39.2%), were included in this study. There were 269 patients (17.7%) of reproductive age and 490 patients (32.2%) without a living spouse. Only 215 patients (14.1%) survived to hospital discharge. Among these, 110 patients (7.2%) demonstrated a favourable neurological status. Our analysis indicated that being female was inversely associated with a favourable neurological outcome (odds ratio [OR], 0.51; 95% confidence interval [CI], 0.29-0.87; p=0.02). Being female without a living spouse was inversely associated with a favourable neurological outcome (OR, 0.43; 95% CI, 0.17-0.96; p=0.05). Neither female nor female-associated interaction terms were significantly associated with survival to hospital discharge. CONCLUSION: Female patients with IHCA had worse neurological outcomes than their male counterparts, especially for women without a living spouse. However, survival outcome did not differ between genders.