Intra-aortic Balloon Pump Insertion Research Articles

EARLY OUTCOME OF LEFT VENTRICULAR FUNCTION AFTER CORONARY ARTERY BYPASS SURGERY: A SINGLE-CENTER EXPERIENCE

Patients with ischemic heart disease and low ejection fraction often exhibit improved outcomes following coronary artery bypass grafting (CABG). Our study aimed to assess the impact of CABG on left ventricular (LV) systolic function and identify predictors of adverse postoperative outcomes. We conducted a prospective cross-sectional study involving 110 CABG patients with a mean age of 56.1 ± 12.2 years and preoperative left ventricular ejection fraction (LVEF) below 50%. Patients were categorized into two groups: group I (n=76, LVEF > 35%) and group II (n=34, LVEF < 35%). In group II, there was a significantly higher prevalence of diabetes mellitus (DM) (p = 0.05) and Euro SCORE II compared to group I (p < 0.001). However, other clinical predictors showed no significant difference between the two groups. Both groups exhibited a significant improvement in LVEF post-surgery (p = 0.05), with comparable in-hospital mortality rates recorded. The study identified DM, significant diastolic dysfunction, and intra-aortic balloon pump (IABP) insertion as predictors of in-hospital mortality (p = 0.001, 0.03, and < 0.001, respectively). These findings suggest a noticeable enhancement in LV systolic function post-CABG, contributing to improved survival rates. However, patients with DM, significant diastolic dysfunction, and those requiring IABP insertion during the perioperative period are at higher risk of mortality. Therefore, targeted attention and specialized care are essential for optimizing outcomes in these high-risk patients.

Successful surgical management of ventricular septal perforation following left ventricular free wall rupture due to acute myocardial infarction: a case report

BackgroundThe mechanical complications associated with acute myocardial infarction can be fatal. We report a life-saving case of a very elderly patient with consecutive mechanical complications of acute myocardial infarction.Case presentationA 90-year-old woman was transferred to our hospital for emergency care due to chest pain. She underwent emergency percutaneous coronary intervention of the left anterior descending branch and was diagnosed with acute myocardial infarction and intra-aortic balloon pumping insertion was performed. After returning to the intensive care unit, she experienced chest pain and went into shock. Echocardiography showed left ventricular free wall rupture, and percutaneous cardiopulmonary support was established. Emergency left ventriculoplasty was performed for the left ventricular free wall rupture. A ventricular septal perforation was observed on postoperative day 9, and its closure through right ventriculotomy was performed on postoperative day 10. On the 128th postoperative day, the patient was transferred to the hospital for rehabilitation.ConclusionsA 90-year-old patient with consecutive left ventricular free wall rupture and ventricular septal perforation after acute myocardial infarction was successfully managed with two surgeries.

Myasthenic Crisis and Concomitant Takotsubo Syndrome Complicated by Shock: A Case Report.

A man in his 80s with myasthenia gravis (MG) developed dysmobility and chest discomfort. An electrocardiogram revealed ST-segment elevation, and coronary angiography revealed Takotsubo syndrome (TTS). He experienced myasthenic crisis that required ventilation and shock that was refractory to vasopressors and required intra-aortic balloon pump (IABP) insertion. He was managed conservatively without MG-specific treatment until his hemodynamics improved. On hospital day 6, he was weaned from IABP. MG is a high-risk condition for TTS, and TTS with MC is associated with high mortality. We successfully managed this case of TTS with MC with intubation and IABP, without MG-specific treatment.

Veno-Venous Coiling as A Strategy to Wean Extracorporeal Membrane Oxygenator Post Adult Fontan Completion

We discuss a case of veno-venous collaterals in a patient with Fontan circulation post complex redo-surgery, which impeded veno-venous extracorporeal membrane oxygenation (VV-ECMO) weaning. A 31-year-old male, born with complex congenital heart disease (D-transposition of the great vessels, tricuspid atresia, aortic coarctation, ventricular septal defect, and hypoplastic right ventricle) with single ventricle physiology. The patient underwent multiple cardiac surgeries leading to Fontan completion. He subsequently developed significant aortic regurgitation with progressive left ventricular dilatation requiring multiple readmissions for congestive heart failure. Despite maximal medical optimisation he remained symptomatic and was offered further surgery. Complex 6th redo-operation with aortic valve replacement, modification to intracardiac fenestrated Fontan and insertion of intra-aortic balloon pump was performed. At 72 hours postoperative, VV-ECMO was required for refractory hypoxia. Right heart catheterisation was performed with coiling of two large fistulous venous connections. Post-coiling saturations improved from 92% to 98%. The patient was successfully weaned from VV-ECMO and decannulated the following day. This case demonstrates successful embolisation for veno-venous collaterals causing significant right to left shunt and hypoxia, in a patient with Fontan circulation.

Surgical repair of post myocardial infarction ventricular septal defect: a retrospective analysis of a single institution experience

IntroductionVentricular septal defect (VSD) is a mechanical complication of acute myocardial infarction (MI) with a very high mortality, despite advances in surgical and circulatory support. The tremendous hemodynamic disturbance and the severely fragile myocardium render surgical repair a great challenge. The optimal time of surgical repair with or without circulatory support is still controversial.ObjectiveThe aim of this study is to review our experience with early surgical repair of post-MI VSD in a single major cardiac institution in China.MethodsFrom January 2013 to October 2020, 9consecutive patients presented to our emergency department with a diagnosis of post-MI VSD. Among them, 8 were male, and the mean age was 58 ± 7years. The mean VSD size was 22.5 ± 5.7 mm. In all patients, an intra-aortic balloon pump (IABP)was inserted immediately after admission to cardiac surgery service. All patients were operated at a mean of 3.3 ± 2.9 days, and 4 within 24 h of the rupture (range 1 to 9 days post-VSD). In 5 cases, the VSD was located superiorly, and 4 cases in the posterior septum.ResultsThe overall 30-day mortality was 11% (1/9). Coronary angiography was performed in all nine patients, four with single vessel disease had coronary stents implanted, and the other five received concomitant coronary artery bypass grafting during VSD repair surgery. There was no death in all 5 patients with anterior septal perforation. One patient with posterior septal perforation died in the operating room due to bleeding from the ventriculotomy site. Three survived patients were diagnosed with a small residual defect and mild left to right shunt post-repair. However, no further intervention was required, and patients remained asymptomatic (Killip II in 1 and III in 2).ConclusionIn our experience, immediate insertion of IABP and hemodynamic stabilization with early surgical intervention of VSD repair and concomitant coronary revascularization provided an 89% survival rate.

Abstract 18595: Predictors of Prolonged Post-Operative Stay in Patients Undergoing Coronary Artery Bypass Grafting: The Impact of Multi-Disciplinary Quality of Care Protocols, a Single Center Experience From the Middle East

Background: Prolonged postoperative stay (POS) in patients undergoing CABG is associated with increased cost, inefficient utilization of resources, and poor quality of care (QOC). We aim to identify predictors of prolonged POS and evaluate the overtime impact of multidisciplinary team (MDT) QOC protocols on POS at a newly established tertiary care center. Methods: A total of 1168 consecutive patients undergoing isolated CABG between 2015-2022 were evaluated. POS was identified as prolonged (>6 days) and short (≤ 6 days). Short vs. prolonged stay groups were compared by appropriate testing methods. Predictors of prolonged POS were determined by multivariable logistic regression. Trends in prolonged POS were determined using Joinpoint Software to calculate the average annual percentage change (AAPC). Results: Overall, 44.3% (517/1168) of patients had prolonged POS. Patients in the prolonged POS group were older (59.1±10.5 vs. 56.3± 9.5, P<0.001), more likely females (16.6% vs. 9.7%, P<0.001), and had a higher burden of hypertension (88.1% vs. 81.9%, P=0.004), and diabetes (74.8% vs. 62.7%, P<0.001). The prolonged POS group featured worse ejection fraction, higher serum creatinine, and more frequently required preoperative intra-aortic balloon pump insertion (Table) . On multivariable logistic regression, age, female gender, NYHA class ≥II, history of diabetes, preoperative creatinine level, preoperative EF, and preoperative IABP placement were independent predictors of prolonged POS (Figure A) . Between 2015-2022, more QOC protocols were initiated, with a 67% relative reduction in the proportion of patients with prolonged POS (85.7% to 28.3%), with an AAPC of -12.8, 95% CI [-16.3, -9.2], P<0.001 (Figure B). Conclusion: Initiating MDT QOC protocols was associated with a reduction in POS among patients undergoing CABG. Identifying predictors of prolonged POS can help in timely planning of milestones aimed at eliminating unnecessary POS.

Intra-aortic balloon pump in acute myocardial infarction and cardiogenic shock, efficiency, safety and mortality risk factors

Background and methodsCardiogenic shock remains one of the leading causes of death in patients with myocardial infarction. The Intra-aortic balloon pump (IABP) has been widely used as a treatment for acute myocardial infarction (AMI), despite recommendations against its routine use. In this paper, our aim is to analyze and share our own experience with IABP in the setting of AMI. We retrospectively reviewed the files of patients admitted with AMI and cardiogenic shock and for whom IABP was inserted between June 2016 and December 2022. Results300 patients with AMI and cardiogenic shock were admitted and benefited from IABP insertion and primary coronary revascularization. The overall mortality rate was 62.3%, the site related complication rate was 0.6%, and the overall complications rate (including site related and major bleeding) was 10.6%. There was a significantly higher mortality in the group of patients where the Left Anterior Descending artery (LAD) was the culprit lesion, in the group of patients who required dialysis, the group who had creatinine levels greater than 200 um/L compared to the group who had creatinine lower than 200 um/L, and in patients older than 70 years. Interestingly, no difference in mortality was observed between men and women, single versus multiple vessel disease, and between STEMI and non-STEMI patients. ConclusionMortality of AMI complicated by cardiogenic shock and treated by IABP remains high. However, IABP usage is associated with a low complication rate. Better selection criteria for IABP usage versus other more powerful mechanical circulatory support devices in such patients might improve the outcome for the patient.

Effect of peri-operative intra-aortic balloon pump in patients undergoing coronary artery bypass grafting on outcomes in a resource limited setting.

Intra-aortic balloon pump (IABP) insertion for diminished myocardial function is standard of care in cardiac surgery. Previous studies have suggested a possible benefit to IABP support before surgery with regards to outcomes and complications. However, there are conflicts with other studies suggesting no significant benefit. Optimal time of insertion, whether preoperative or perioperative (intra-operative and post-operative), has yet to be defined. A retrospective, hospital records-based chart review was conducted for patients admitted to our center from January 2015 to December 2019 for coronary bypass surgery necessitating IABP insertion. Cases were stratified according to the timing of insertion and analyzed according to surgical outcomes and complication rates. Out of 97 patients, 84.5% underwent preoperative IABP insertion while 15.5% of patients received perioperative (Intra-operative or post-operative) insertion. In-hospital mortality was significantly higher in patients with perioperative IABP insertion as compared to the preoperative group (60% vs 20.7%, p = 0.003). However, there were no significant differences between 30-day readmission rates in the two groups (9.8% vs 6.7%, p = 1.000). Length of stay was also higher in patients with preoperative insertion of IABP (p = 0.032), with no significant difference in ICU stay (p = 0.107). Perioperative IABP patients had higher rates of arrhythmias (46.7%, p = 0.042) and reopening of patient (33.3%, p = 0.028). Our study shows improved mortality in patients with preoperatively inserted IABP. This may be beneficial for high-risk patients undergoing CABG surgery. Expanding the use of IABP before CABG in third world countries such as Pakistan may improve overall survival for patients.

P56: The Impact of Ipsilateral Implantable Cardioverter Defibrillator in Axillary Intra-Aortic Balloon Pump Support as Bridge-to-Heart Transplantation

Background: The axillary artery (AX) access for intra-aortic balloon pump (IABP) as a bridge to heart transplant (HT) allows mobility while awaiting a suitable donor. As end-stage heart failure patients often have an implantable cardioverter defibrillator (ICD) on the left side, the left AX approach may be avoided due to the perception of difficult access and proximity of two devices. Purpose: We compare the outcomes of patients undergoing HT that were bridged with a left-sided AX IABP with or without ipsilateral ICDs. Methods: Patients who had undergone left AX IABP as a bridge to HT between January 2010 to February 2022 were retrospectively reviewed (N=31). All AX IABPs were surgically implanted via the left AX. ICD was present in a total of 17 (80.9%) on the left side (Group ICD) while 14 patients did not have ICD on the left side (Group No-ICD). The procedural time was defined as the time from skin incision to the beginning of anastomoses of a Dacron graft. Results: The median age of the recipients was 55.6±12.9 with 80.6% (N=25) males. The median duration of left AX IABP support was 14 (8,22) days. Technical success was 100%. The mean procedure time to expose the AX was comparable between the two groups (ICD, 12.5±6.2 min vs. No-ICD, 11.2±6.0 min, P=0.640), as was the incidence of bleeding/hematoma (ICD, 0% vs. No-ICD, 7.1%, P=0.202). There was no ischemic stroke in both group. The most common adverse event in the cohort was a malfunction in 4 patients (12.9%) and malposition requiring exchange in 2 patients (6.4%). There was AX hematoma in 1 patient requiring revision and 1 patient with a right-sided ICD who had peripheral vascular disease developed left-sided arm and lower limb ischemia. Neither group had no device-related infection, wound infection, or brachial plexus symptoms. Conclusion: The insertion of IABP via the left AX as a bridge to HT is feasible with a good safety profile. The left AX approach for patients with ipsilateral ICDs can also be performed safely without increasing procedure time and adverse events.

Impact of prophylactic intra-aortic balloon pump on early outcomes in patients with severe left ventricular dysfunction undergoing elective coronary artery bypass grafting with cardiopulmonary bypass

ObjectiveOur aim was to analyse whether prophylactic preoperative intraaortic balloon pump (IABP) improves outcomes in hemodynamically stable patients with low left ventricular ejection fraction (LVEF ≤30%) undergoing elective myocardial revascularization (CABG) using cardiopulmonary bypass (CPB). Secondary aim was to identify the predictors for low cardiac output syndrome (LCOS). MethodsProspectively collected data of 207 consecutive patients with LVEF ≤30% undergoing elective isolated CABG with CPB from 01/2009 to 12/2019, 136 with and 71 patients without IABP, were retrieved retrospectively. Patients with prophylactic IABP were matched 1:1 with patients without IABP by a propensity score matching. Stepwise logistic regression was conducted to identify predictors of postoperative LCOS in the propensity-matched cohort. P value ≤0.05 was considered significant. ResultsReduced postoperative LCOS (9.9% vs. 26.8%, P = 0.017) was observed in patients receiving prophylactic IABP. Stepwise logistic regression identified preoperative IABP as preventive factor for postoperative LCOS [Odds Ratio (OR) 0.19,95% Confidence Interval (CI), 0.06–0.55, P = 0.004]. The need of vasoactive and inotropic support was lower in patients with prophylactic IABP at 24, 48 and 72 h after surgery (12.3 [8.2–18.6] vs. 22.2 [14.4–28.8], P < 0.001, 7.7 [3.3–12.3] vs.16.3 [8.9–27.8], P < 0.001 and 2.4 [0–7] vs. 11.5 [3.1–26], P < 0.001, respectively). The patients in both groups did not differ in terms of in-hospital mortality (7.0% vs. 9.9%, P = 0.763). There were no major IABP-related complications. ConclusionsElective patients with left ventricular ejection fraction ≤30% undergoing CABG with CPB and prophylactic IABP insertion had less low cardiac output syndrome and similar in-hospital mortality.

(802) Determinants of Cardiac Index Improvement after Intra-Aortic Balloon Pump Insertion

(802) Determinants of Cardiac Index Improvement after Intra-Aortic Balloon Pump Insertion

Impact of end stage renal disease on the clinical outcomes of diabetics admitted for heart failure: Analysis of national inpatient sample

Introduction: Patients with diabetes and heart failure (HF) can have varying outcomes depending on whether they also have End Stage Renal Disease (ESRD). This study aimed to compare the outcomes of patients with diabetes and HF with and without ESRD. Methods: Data from the National Inpatient Sample (NIS) 2016-2018 was analyzed to find hospitalizations for patients with HF as the main diagnosis and diabetes as a secondary diagnosis, with and without ESRD. Multivariable logistic and linear regression analysis was used to adjust for confounding factors. Results: In the total cohort of 12215 patients with a principal diagnosis of heart failure and secondary diagnosis of type 2 diabetes, the in-hospital mortality rate was 2.5%. Patients with ESRD had higher odds of in-hospital mortality (1.37x) compared to those without ESRD. The mean difference in length of stay was higher for patients with ESRD (0.49 days) and in total hospital charges (13360 US$). Patients with ESRD had higher odds of developing acute pulmonary edema, cardiac arrest, and requiring endotracheal intubation. However, they had lower odds of developing cardiogenic shock or requiring an intra-aortic balloon pump insertion. Conclusion: The results suggest that ESRD leads to higher in-patient mortality, length of stay, and total hospital charges for patients with diabetes admitted for HF. The lower incidence of cardiogenic shock and intra-aortic balloon pump insertion in patients with ESRD may be due to timely dialysis.

Abstract P528: Acute Kidney Injury Increases Mortality in Patients With Upper Gastrointestinal Hemorrhage (UGIB) and Acute Coronary Syndrome: A Population Based Study

Background: Upper GI Bleeding (UGIB) is a common emergency with a relatively high incidence in the general population. Acute Coronary Syndrome (ACS) is often overlooked in gastrointestinal bleeding as its symptoms and signs are often subtle. Purpose: This study aims to compare the outcomes of patients admitted for ACS with and without UGIB. Methods: Data were extracted from the National Inpatient Sample (NIS) 2016-2019 Database. The NIS was searched for hospitalizations for adult patients with ACS as the principal discharge diagnosis with and without UGIB as the secondary diagnosis using ICD-10 codes. The primary outcome was inpatient mortality. Multivariate logistic and linear regression analysis was used accordingly to adjust for confounders. STATA software was used for analysis. Results: Among 35,740 patients who had ACS, 463 (1.3%) patients had UGIB. The adjusted odds ratio (OR) for inpatient mortality for ACS with UGIB compared to those without UGIB was higher (OR 1.94, p&lt;0.0001), length of stay was 4.27 days longer (p&lt;0.0001), and total charges were $55,479 higher (p&lt;0.0001). The Independent positive predictors of increased mortality were: Acute kidney injury (AKI) (p&lt;0.0001). Independent positive predictors of LOS and total charges were the following: Coronary artery bypass graft surgery (CABG), Intra-aortic balloon pump (IABP) insertion, AKI (p&lt;0.0001) Conclusion: UGIB patients with ACS did have higher inpatient mortality. A positive predictor of mortality included the presence of concomitant AKI. Thus, the prevention of AKI Is of utmost importance. Further, larger studies are warranted to identify new risk factors as predictors of mortality and improve awareness of GI bleeding risk and decrease LOS.

Successful Treatment of a COVID 19-Associated Multisystem Thrombotic Event in a Young Patient in a Neurocritical Care Unit

AbstractThis case report describes a young patient with no comorbidities, who presented with two systemic thrombotic events within 24 hours of admission. She presented with a right middle cerebral artery territory infarct and developed an inferior wall myocardial infarction soon after. The hypotension was refractory to inotropes and required emergency intra-aortic balloon pump insertion. She was evaluated for prothrombotic states and other causes of stroke in young. However, the workup for the same was negative. Coronavirus disease-2019 immunoglobulin G antibody titer and inflammatory markers were found to be extremely elevated, which suggested recent severe infection. This case report throws light on the multidisciplinary management of thrombotic events, most probably secondary to coronavirus infection.

Outcomes of Patients Undergoing Rotational Atherectomy with Intra-Aortic Balloon Pump Support in Patients with Multivessel Disease and Low Left Ventricular Ejection Fraction

Background: The aim of the present study was to investigate whether intra-aortic balloon pump (IABP) support was associated with better outcomes after rotational atherectomy (RA) in patients with multivessel disease and low left ventricular ejection fraction (LVEF). Methods: Between January 2015 and December 2021, 596 consecutive patients with severely calcified coronary lesions who underwent elective RA were retrospectively enrolled. Of these, a total of 156 patients were included in this study based on the propensity score matching and divided into two groups according to elective IABP insertion (IABP group, n = 80) or no insertion (non-IABP group, n = 76) before the RA procedure. The primary endpoints were procedural success and major adverse cardiovascular events (MACE) before discharge. The secondary endpoints were mortality and readmission due to heart failure (HF) during 90-day and 180-day follow-up. Results: 77 of patients (96.3%) in the IABP group and 72 of patients (94.7%) in the non-IABP group got procedural success (p = 0.714), separately. We had not observed significant differences in periprocedural complications except for less frequent hypotension in the IABP group (p &lt; 0.001). In-hospital MACE occurred in 7.5% of patients who received IABP support, which was significantly lower compared to the non-IABP group (p = 0.002). In addition, the cumulative incidence of readmission due to HF was also significantly lower in the IABP group during the 90-day (p &lt; 0.001) and 180-day (p = 0.004) follow-up. However, there were no significant differences between groups regarding the incidence of all-cause mortality. Conclusions: The present study suggests the important role of IABP support in improving the outcomes of patients after RA if multivessel disease and low LVEF are anticipated. Prophylactic IABP implantation was related to a lower incidence of in-hospital MACE, and readmission due to HF within 90-day and 180-day follow-up without significant impact on the procedural success and all-cause mortality.

Comparison of Left Ventricular Global Longitudinal Strain with Ejection Fraction as a Predictor for Peri-operative IABP Insertion in Patients Undergoing Off-Pump Coronary Artery Bypass Grafting: A Pilot Study.

Prophylactic use of intra-aortic balloon pump (IABP) mainly depends on left ventricular (LV) systolic function. Global longitudinal strain (GLS) is a robust prognostic parameter for LV strain. It has proved to be more sensitive than LV ejection fraction (EF) as a measure of LV systolic function and is a strong predictor of outcome. To determine whether GLS can be used as a reliable marker and its cut-off value for IABP insertion in patients undergoing elective off-pump coronary artery bypass grafting (OPCABG). A prospective observational clinical study which included 100 adult patients scheduled for elective OPCABG. Two-dimensional (2D) speckle tracking echocardiography (STE)-estimated GLS was computed and compared with LV EF measured by three dimensional (3D) echocardiography for the insertion of IABP. The intensive care unit (ICU) parameters were correlated with echocardiographic parameters to predict early post-operative outcome. IABP insertion correlates better with GLS (post-revascularization > pre-revascularization) than with 3D LV EF. Receiver operating characteristic (ROC) curve analysis revealed the highest area under the curve (AUC, 0.972) with a cut-off value of > -9.8% for GLS compared to 3D LV EF (AUC, 0.938) with a cut-off value of ≤ 44%. ICU parameters show better correlation with E/e'> GLS > WMSI than 3D LV EF. GLS is a better predictor of IABP insertion compared to 3D LV EF in patients undergoing OPCABG.

A rare complication of intra-aortic balloon pump

Intra-aortic balloon pump (IABP) is commonly used for circulatory support in patients with cardiogenic shock. IABP is associated with several complications; however, IABP rupture was rarely reported. We present a female patient with acute myocardial infarction and ventricular septal rupture. The patient underwent transcatheter device closure of the ventricular septum and IABP insertion. After 4 days of insertion, we encountered a failure to cycle alarm. The IABP was removed with difficulty, and a leak coming from the shaft near the bifurcation was found. This case highlighted the importance of early detection of IABP rupture to avoid entrapment and further complications.

Intra-aortic Balloon Pump Securement.

Intra-aortic Balloon Pump Securement.

COMPARISON OF GLOBAL LONGITUDINAL STRAIN WITH LEFT VENTRICULAR EJECTION FRACTION AS A PREDICTOR FOR IABP INSERTION IN PATIENTS UNDERGOING OFF-PUMP CORONARY ARTERY BYPASS GRAFTING: A PILOT STUDY

<h3>Objective</h3> Prophylactic use of intra-aortic balloon pump (IABP) mainly depends on left ventricular (LV) systolic function. Global longitudinal strain (GLS) is the most studied parameter for LV strain. It has proved to be more sensitive than LV ejection fraction (EF) as a measure of LV systolic function and is a strong predictor of outcome. The primary aim was to determine whether GLS can be used as a reliable marker and its cut-off value for IABP insertion in patients undergoing elective off-pump coronary artery bypass grafting (OPCABG). The secondary aim was to correlate echocardiographic parameters with intensive care unit (ICU) parameters to predict early post-operative outcome. <h3>Design</h3> A prospective observational clinical study. <h3>Setting</h3> Single university hospital. <h3>Participants</h3> 100 adult patients scheduled for elective OPCABG. <h3>Intervention</h3> None <h3>Measurements and Main Results</h3> 2D speckle tracking echocardiography (STE) estimated GLS was computed and LV EF measured by 3D echocardiography. The study predicted that IABP insertion correlates better with GLS (post-revascularization > pre-revascularization) than with 3D LV EF. Receiver operating characteristics (ROC) curve analysis revealed highest area under the curve (AUC, 0.972) with cut-off value of > -9.8% for GLS with maximum combined sensitivity and specificity compared to 3D LV EF (AUC, 0.938) with cut-off value of ≤44%. ICU parameters show better correlation with E/e'> GLS > WMSI than 3D LV EF. <h3>Conclusion</h3> GLS is a better predictor of IABP insertion compared to 3D LV EF in patients undergoing OPCABG.

Risk factors for development of acute renal failure in 5077 coronary artery bypass grafting patients in the current era.

Acute renal failure (ARF) is one of the major complications after coronary artery bypass grafting (CABG) surgery. The risk factors are changing along with the technical evolution. The aim of this study was to identify the risk factors for ARF requiring dialysis after CABG surgery in the current era. Between April 2012 and November 2019, 5077 consecutive patients who underwent CABG were analyzed retrospectively. The patients were divided into ARF group and non-ARF group according to whether ARF occurred and dialysis was required after operation. Univariate analysis was performed to find possible factors associated with ARF. Any variables that had trends to be associated with ARF were included in stepwise multiple logistic regression analysis. Of the 5077 patients who underwent CABG, 53 (1.04%) developed ARF requiring dialysis whereas 5024 (98.96%) were in non-ARF group. Cardiopulmonary bypass (CPB) time (odds ratio [OR], 1.009; 95% confidence interval [CI], 1.003-1.016; p = .006), insertion of intra-aortic balloon pump (IABP; OR, 19.294; 95% CI, 5.49-67.808; p = .000), and low ejection fraction (EF; OR, 0.943; 95% CI, 0.894-0.994; p = .030) were independent risk factors for development of ARF requiring dialysis in patients undergoing CABG surgery. Our study identified prolonged CPB time, insertion of IABP, and low EF as independent risk factors for developing ARF requiring dialysis after CABG. The results suggest that shortening of CPB time and protection of cardiac function are important factors to prevent ARF and that special care should be taken to protect the renal function when the patient need insertion of IABP.