scholarly journals Determinants and Prediction Equations of Six-Minute Walk Test Distance Immediately After Cardiac Surgery

2021 ◽  
Vol 8 ◽  
Author(s):  
Basuni Radi ◽  
Ade Meidian Ambari ◽  
Bambang Dwiputra ◽  
Ryan Enast Intan ◽  
Kevin Triangto ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Artery Bypass ◽  
Body Height ◽  
Male Gender ◽  
Valve Surgery ◽  
Walk Test ◽  
Cross Sectional ◽  
Surgery Group ◽  
Test Distance

Background: To date, there is no reference for a 6-min walk test distance (6-MWD) immediately after cardiac surgery. Therefore, this study aimed to identify the determinants and to generate equations for prediction reference for 6-MWD in patients immediately after cardiac surgery.Methods: This is a cross-sectional study of the 6-min walk test (6-MWT) prior to participation in the cardiac rehabilitation (CR) program of patients after coronary artery bypass surgery (CABG) or valve surgery. The 6-MWT were carried out in a gymnasium prior to the CR program immediately after the cardiac surgery. Available demographic and clinical data of patients were analyzed to identify the clinical determinants of 6-MWD.Results: This study obtained and analyzed the data of 1,509 patients after CABG and 632 patients after valve surgery. The 6-MWD of all patients was 321.5 ± 73.2 m (60–577). The distance was longer in the valve surgery group than that of patients in the CABG group (327.75 ± 70.5 vs. 313.59 ± 75.8 m, p < 0.001). The determinants which significantly influence the 6-MWD in the CABG group were age, gender, diabetes, atrial fibrillation, and body height, whereas in the valve surgery group these were age, gender, and atrial fibrillation. The multivariable regression models generated two formulas using the identified clinical determinants for patients after CABG: 6-MWD (meter) = 212.57 + 30.47 (if male gender) − 1.62 (age in year) + 1.09 (body height in cm) − 12.68 (if with diabetes) − 28.36 (if with atrial fibrillation), and for patients after valve surgery with the formula: 6-MWD (meter) = 371.05 + 37.98 (if male gender) − 1.36 (age in years) − 10.61 (if atrial with fibrillation).Conclusion: This study identified several determinants for the 6-MWD and successively generated two reference equations for predicting 6-MWD in patients after CABG and valve surgery.

scholarly journals Predictive Accuracy of a Polygenic Risk Score for Postoperative Atrial Fibrillation After Cardiac Surgery

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Miklos D. Kertai ◽  
Jonathan D. Mosley ◽  
Jing He ◽  
Abinaya Ramakrishnan ◽  
Mark J. Abdelmalak ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Coronary Artery ◽  
Artery Bypass ◽  
Valve Surgery ◽  
Polygenic Risk Score ◽  
Bypass Grafting ◽  
Polygenic Risk ◽  
Net Reclassification Improvement ◽  
C Statistic

Background: Postoperative atrial fibrillation (PoAF) remains a significant risk factor for increased morbidity and mortality after cardiac surgery. The ability to accurately identify patients at risk through clinical risk factors is limited. There is growing evidence that polygenic risk contributes significantly to PoAF and incorporating measures of genetic risk could enhance prediction. Methods: A retrospective cohort study of 1047 patients of White European ancestry who underwent either coronary artery bypass grafting or valve surgery at a tertiary academic center and were free from a history or persistent preoperative atrial fibrillation. The primary outcome was defined as PoAF based on postoperative ECG reports, medical record documentation, and changes in medication. The exposure was a polygenic risk score (PRS) comprising 2746 single-nucleotide polymorphisms previously associated with atrial fibrillation risk. The prediction of PoAF risk was assessed using measures of model discrimination, calibration, and net reclassification improvement. Results: A total of 259 patients (24.7%) developed PoAF. The PRS was significantly associated with a higher risk for PoAF (odds ratio, 1.63 per SD increase in PRS [95% CI, 1.41–1.90]). Addition of PRS to patient- and procedure-related predictors of PoAF significantly increased the C statistic from 0.742 to 0.782 (change in C statistic, 0.040 [95% CI, 0.021–0.060]) while maintaining good calibration. The addition of the PRS to patient- and procedure-related predictors of PoAF improved model fit (likelihood ratio test, P =2.8×10 −15 ) and significantly improved measures of reclassification (net reclassification improvement, 0.158 [95% CI, 0.066–0.274]). Conclusions: The PRS for PoAF was associated with improved discrimination, calibration, and risk reclassification compared with conventional clinical predictors suggesting that a PoAF PRS may enhance risk prediction of PoAF in patients undergoing coronary artery bypass grafting or valve surgery.

Impact of atrial fibrillation on in-hospital outcomes among hospitalizations for cardiac surgery: an analysis of the National Inpatient Sample

2022 ◽  
pp. jim-2021-001864
Author(s):  
Kanishk Agnihotri ◽  
Paris Charilaou ◽  
Dinesh Voruganti ◽  
Kulothungan Gunasekaran ◽  
Jawahar Mehta ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Valve Replacement ◽  
Failure Time ◽  
Artery Bypass ◽  
Bypass Graft ◽  
National Inpatient Sample ◽  
Inpatient Mortality ◽  
Hospitalization Costs ◽  
The Impact

The short-term impact of atrial fibrillation (AF) on cardiac surgery hospitalizations has been previously reported in cohorts of various sizes, but results have been variable. Using the 2005–2014 National Inpatient Sample, we identified all adult hospitalizations for cardiac surgery using the International Classification of Diseases, Ninth Revision, Clinical Modification as any procedure code and AF as any diagnosis code. We estimated the impact of AF on inpatient mortality, length of stay (LOS), and cost of hospitalization using survey-weighted, multivariable logistic, accelerated failure-time log-normal, and log-transformed linear regressions, respectively. Additionally, we exact-matched AF to non-AF hospitalizations on various confounders for the same outcomes. A total of 1,269,414 hospitalizations were noted for cardiac surgery during the study period. Coexistent AF was found in 44.9% of these hospitalizations. Overall mean age was 65.6 years, 40.9% were female, mean LOS was 11.6 days, and inpatient mortality was 4.5%. Stroke rate was lower in AF hospitalizations (1.8% vs 2.1%, p<0.001). Mortality was lower in the AF (3.9%) versus the non-AF (5%) group (exact-matched OR or emOR=0.48, 95% CI 0.29 to 0.80, p<0.001; 987 matched pairs, n=2423), with similar results after procedural stratification: isolated valve replacement/repair (emOR=0.38, p<0.001), isolated coronary artery bypass graft (CABG) (emOR=0.33, p<0.001), and CABG with valve replacement/repair (emOR=0.55, p<0.001). A 12% increase was seen in LOS in the AF subgroup (exact-matched time ratio=1.12, 95% CI 1.10 to 1.14, p<0.001) among hospitalizations which underwent valve replacement/repair with or without CABG. Hospitalizations for cardiac surgery which had coexistent AF were found to have lower inpatient mortality risk and stroke prevalence but higher LOS and hospitalization costs compared with hospitalizations without AF.

scholarly journals Long-Term Survival Following Surgical Ablation for Atrial Fibrillation Concomitant to Isolated and Combined Coronary Artery Bypass Surgery—Analysis from the Polish National Registry of Cardiac Surgery Procedures (KROK)

2020 ◽  
Vol 9 (5) ◽  
pp. 1345
Author(s):  
Mariusz Kowalewski ◽  
Marek Jasiński ◽  
Jakub Staromłyński ◽  
Marian Zembala ◽  
Kazimierz Widenka ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
National Registry ◽  
Surgical Ablation ◽  
Term Survival ◽  
Long Term Survival

The current investigation aimed to evaluate long-term survival in patients undergoing isolated and combined coronary artery bypass grafting (CABG) with concomitant surgical ablation for atrial fibrillation (AF). Procedural data from KROK (Polish National Registry of Cardiac Surgery Procedures) were retrospectively collected. Eleven thousand three hundred sixteen patients with baseline AF (72.4% men, mean age 69.6 ± 7.9) undergoing isolated and combined CABG surgery between 2006–2019 in 37 reference centers across Poland and included in the registry were analyzed. The median follow-up was four years (3.7 IQR 1.3–6.8). Over a 12-year study period, there was a significant survival benefit (Hazard Ratio (HR) 0.83; (95% Confidence Interval (CI): 0.73–0.95); p = 0.005) with concomitant ablation as compared to no concomitant ablation. After rigorous propensity matching (LOGIT model, 432 pairs), concomitant surgical ablation was associated with over 25% improved survival in the overall analysis: HR 0.74; (95% CIs: 0.56–0.98); p = 0.036. The benefit of concomitant ablation was maintained in the subgroups, yet the most benefit was appraised in low-risk patients (EuroSCORE < 2, p = 0.003) with the three-vessel disease (p < 0.001) and without other comorbidities. Ablation was further associated with significantly improved survival in patients undergoing CABG with mitral valve surgery (HR 0.62; (95% CIs: 0.52–0.74); p < 0.001) and in patients in whom complete revascularization was not achieved: HR 0.43; (95% CIs: 0.24–0.79); p = 0.006.

scholarly journals Heart surgery in patients on chronic dialysis

2013 ◽  
Vol 66 (1-2) ◽  
pp. 64-69 ◽  
Author(s):  
Dragana Unic-Stojanovic ◽  
Miroslav Milicic ◽  
Petar Vukovic ◽  
Srdjan Babic ◽  
Miomir Jovic
Keyword(s):  
Renal Failure ◽  
Cardiac Surgery ◽  
Cardiopulmonary Bypass ◽  
Coronary Artery ◽  
Coronary Artery Bypass Grafting ◽  
Artery Bypass ◽  
Valve Surgery ◽  
Bypass Grafting ◽  
End Stage Renal Failure ◽  
End Stage

Introduction. Patients on dialysis for end-stage renal failure are subjected to cardiac surgery with increasing frequency. End-stage renal failure is known to be an important risk factor for complications of cardiac operations performed with cardiopulmonary bypass. The aim of this study was to determine the impact of preoperative clinical status and operative variables on perioperative morbidity and mortality in hemodialysis dependent patients subjected to a cardiac surgery. Material and Methods. The following operative variables were examined: urgency, type and duration of surgery and duration of extracorporeal circulation. The study is a retrospective analysis of consecutive patients with end-stage renal failure dependent on maintenance hemodialysis who underwent cardiac surgery during four years. Results. The study included 46 patients. Operations performed included isolated coronary artery bypass grafting (CABG, n = 24), valve surgery alone (n = 6), and combined valve surgery or coronary artery bypass grafting and valve surgery (n = 16). The perioperative mortality rate was 13% with four fatal outcomes in patients who had undergone combined cardiac surgery. We found age > 70 years, preoperative New York Heart Association class IV, preoperative anemia, combined surgery and emergent surgery to be associated with a higher relative risk for perioperative death. Conclusion. Patients on dialysis have an increased morbidity and mortality following cardiac surgery; however, we believe that end-stage renal failure should not be regarded as a contraindication to cardiac surgery or cardiopulmonary bypass.

scholarly journals A retrospective study on atrial fibrillation after coronary artery bypass grafting surgery at The National Heart Institute, Kuala Lumpur

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 164 ◽  
Author(s):  
Ahmad Farouk Musa ◽  
Chou Zhao Quan ◽  
Low Zheng Xin ◽  
Trived Soni ◽  
Jeswant Dillon ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Coronary Artery ◽  
Coronary Artery Bypass Grafting ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Cost Of Care ◽  
Bypass Grafting ◽  
Artery Bypass Grafting ◽  
Heart Institute

Background: Atrial fibrillation (AF) is common after cardiac surgery and has been associated with poor outcome and increased resource utilization. The main objective of this study is to determine the incidence of POAF in Malaysia and identify the predictors of developing POAF. The secondary outcome of this study would be to investigate the difference in mortality and morbidity rates and the duration of intensive care unit (ICU), high dependency unit (HDU) and hospital stay between the two. Methods: This is a retrospective single-center, cross sectional study conducted at the National Heart Institute, Malaysia. Medical records of 637 who underwent coronary artery bypass grafting (CABG) surgery in 2015 were accrued. Pre-operative, operative and post-operative information were subsequently collected on a pre-formulated data collection sheet. Data were then analyzed using IBM SPSS v23. Results: The incidence of POAF in our study stands at 28.7% with a mean onset of 45±33 hours post operatively. Variables with independent association with POAF include advancing age, Indian population, history of chronic kidney disease, left ventricular ejection fraction and beta-blocker treatment. The mortality rate is significantly higher statistically (p < 0.05), and similarly the incidence of stroke. The incidence of other post-operative complications was also significantly higher statistically. The duration of ICU, HDU and hospital stays were statistically longer (p < 0.001) with higher rates of ICU readmissions and reintubations seen. Conclusion: We conclude that the incidence of POAF in Malaysia is comparable to the figures in Western countries, making POAF one of the most commonly encountered condition after CABG with similar higher rates of mortality, poor outcomes and longer duration of stay, and therefore increased cost of care. Strategies to reduce the incidence of AF after cardiac surgery should favorably affect surgical outcomes and reduce utilization of resources and thus lower cost of care.

scholarly journals Non-home discharge after cardiac surgery in Australia and New Zealand: a cross-sectional study

BMJ Open ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. e049187
Author(s):  
Mahesh Ramanan ◽  
Aashish Kumar ◽  
Chris Anstey ◽  
Kiran Shekar
Keyword(s):  
Cardiac Surgery ◽  
New Zealand ◽  
Artery Bypass ◽  
Care Facility ◽  
Cross Sectional Study ◽  
Adult Patients ◽  
Sectional Study ◽  
Cross Sectional ◽  
Home Discharge ◽  
Over Time

ObjectiveTo determine the proportion of patients surviving their cardiac surgery who experienced non-home discharge (NHD) over a 16-year period in Australia and New Zealand (ANZ).DesignRetrospective, multicentre, cross-sectional study over the time period 01 January 2004 to 31 December 2019.SettingAdult patients who underwent cardiac surgery from the Australia New Zealand Intensive Care Society Adult Patient Database (APD).ParticipantsAdult patients (age 18 and above) who underwent index coronary artery bypass grafting, cardiac valve surgery or combined valve/coronary surgery.ExposureThe primary exposure variable was the calendar year during the which the index surgery was performed.OutcomeThe primary outcome was NHD after the index surgery. NHD included discharge to locations such as nursing home, chronic care facility, rehabilitation and palliative care.ResultsWe analysed 252 924 index cardiac surgical admissions from 101 discrete sites with a median age of 68 years (IQR 60–76), of which 74.2% (187 662 out of 252 920) were males. Of these, 4302 (1.7%) patients died in hospital and 213 011 (84.2%) were discharged home, 18 010 (7.1%) were transferred to another hospital and 17 601 (7%) experienced NHD. In Australia, 14 457 (6.4%) of patients progressed to NHD, compared with 3144 (11.7%) in New Zealand. The rate of NHD increased significantly over time (adjusted OR per year=1.06, 95% CI, 1.06 to 1.07, p<0.001). Increasing age, female sex, non-elective surgery, surgery type and Acute Physiology and Chronic Health Evaluation III Score were all associated with significant increase in NHD.ConclusionsThere was significant increase in NHD after cardiac surgery over time in ANZ. This has significant clinical relevance for informed consent discussions between healthcare providers and patients, and for healthcare services planning.

Perioperative Beta-Blocker for Atrial Fibrillation after Cardiac Surgery: A Meta-Analysis

2020 ◽  
Author(s):  
Sue Hyun Kim ◽  
Myoung-jin Jang ◽  
Ho Young Hwang
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Beta Blocker ◽  
Primary Outcome ◽  
Controlled Trial ◽  
Meta Analysis ◽  
Artery Bypass ◽  
Randomized Controlled ◽  
Online Databases ◽  
The Impact

Abstract Background This meta-analysis was conducted to evaluate the impact of perioperative use of beta-blocker (BB) on postoperative atrial fibrillation (POAF) after cardiac surgery other than isolated coronary artery bypass grafting (CABG). Methods Five online databases were searched. Studies were included if they (1) enrolled patients who underwent cardiac surgery other than isolated CABG and (2) demonstrated the impact of perioperative use of BB on POAF based on the randomized controlled trial or adjusted analysis. The primary outcome was the occurrence rates of POAF after cardiac surgery. A meta-regression and subgroup analysis were performed according to the proportion of patients with cardiac surgery other than isolated CABG and the timing of BB use, respectively. Results Thirteen articles (5 randomized and 8 nonrandomized studies: n = 25,496) were selected. Proportion of enrolled patients undergoing cardiac surgery other than isolated CABG ranged from 7 to 100%. The BBs were used in preoperative, postoperative, and both periods in 5, 5, and 3 studies, respectively. The pooled analyses showed that the risk of POAF was significantly lower in patients with perioperative BB than those without (odds ratio, 95% confidence interval = 0.56, 0.35–0.91 and 0.70, 0.55–0.91 in randomized and nonrandomized studies, respectively). The risk of POAF was lower in the BB group irrespective of the proportion of nonisolated CABG. Benefit regarding in-hospital mortality was inconclusive. Perioperative stroke and length of stay were not significantly different between BB and non-BB groups. Conclusions Perioperative use of BB is effective in preventing POAF even in patients undergoing cardiac surgery other than isolated CABG, although it did not translate into improved clinical outcomes.

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