Intra-aortic balloon pump experience: a single center study comparing with and without sheath insertion

A multivariate and retrospective analysis of the impact of intra-aortic balloon counterpulsation in Open-Heart surgery

Background The use of intraaortic balloon pump (IABP) effectively reduces left ventricular afterload and significantly increases coronary perfusion pressure by raising aortic diastolic pressure. This study examined the short and medium-term outcomes of 22,540 adult cardiac surgical patients requiring an IABP. Methods From 2009 to 2018, 1114 patients (4.94%) undergoing open-heart surgery at a single tertiary cardiac hospital received IABP support and were included in this retrospective study. They were categorized into pre-operative (Group A, n = 577), intra-operative (Group B, n = 475), and post-operative (Group C, n = 62) IABP insertion groups. Results Cardiogenic shock occurred in 11.2% of cases, mainly in Group A. Hemodynamic instability (38.8%) drove IABP use in Groups A and C, while difficulty weaning from CPB was the primary reason in Group C. The overall operative mortality rate was 10.9%, highest at 25.8% postoperatively. Multivariate analysis identified significant predictors of mortality: age (OR: 1.067, 95% CI: 1.041-1.094, p < 0.001), higher BMI (OR: 1.071, 95% CI: 1.017-1.128, p = 0.009), pulmonary hypertension (OR: 2.085, 95% CI: 1.302-3.341, p = 0.002), renal disease (OR: 2.780, 95% CI: 1.556-4.967, p < 0.001), and cardiogenic shock (OR: 3.684, 95% CI: 2.066-6.569, p < 0.001). Complications were more common in Group C, especially with renal disease. Average preoperative and postoperative stays were 4.0 ± 4.8 days and 15.2 ± 20.4 days, respectively, with no significant differences between groups. Conclusion IABP might offer safety for open-heart surgery, with longer hospital stays potentially associated with high-risk patients. Pre-operative IABP prophylaxis could be crucial in high-risk open-heart cases to reduce mortality.Clinical registration number: NHG DSRB Ref No# 2016/01070 and 2019/00397.

Hemolysis Precedes Urine Color Change in Patients Undergoing Open-Heart Surgery on Cardiopulmonary Bypass

PURPOSE

Red-colored urine often occurs in patients in the perioperative period who undergo cardiac surgery using cardiopulmonary bypass (CPB). This urine color change has been utilized for approximating hemolysis during CPB without a proven relationship for ongoing hemolysis. This case series study aimed to examine the relationship between plasma free hemoglobin (Hb) levels and quantified measures of urine color.

METHODS

Ten patients were enrolled in this study. Blood and urine were collected for analyses for the following time points: before surgery, two hours after the initiation of CPB, every 30 min during CPB thereafter, and 0, 2, 4, 12, and 24 hours after the completion of CPB. We measured free Hb in plasma and urine using the azide-methemoglobin method. Photographs of urine were obtained, and the luminance of the three basic colors (red/green/blue) was analyzed by quantitative luminance contrast analysis to find a correlation for hemolysis.

RESULTS

Median levels of plasma free Hb were 0.015 (0.010-0.080, n = 10) g/dL at baseline. During the CPB, increases in plasma free Hb levels were measured: median plasma free Hb levels were increased to 0.100 g/dL (0.020-0.240, p = 0.039, vs. baseline, n = 9) at two hours into CPB, median and range, respectively. In contrast, increases in urinary free Hb levels and/or urine color changes were measured only after cessation of CPB in nine patients.

CONCLUSION

Urine color change or elevation of urinary free Hb levels followed the elevation of plasma free Hb levels with considerable delay.

Red-Colored Urine in the Cardiac Surgical Patient-Diagnosis, Causes, and Management

Red-colored urine occurring in the intraoperative and early postoperative periods after cardiac surgery is often a cause for concern. This observation may be a result of hematuria from pathology within the urinary tract, anticoagulant-related nephropathy, drug-induced acute interstitial nephropathy, excretion of heme pigment-containing proteins, such as myoglobin and hemoglobin, and hemolysis occurring during extracorporeal circulation. Within the kidneys, heme-containing compounds result in pigment nephropathy, which is a significant contributory factor to cardiac surgery-associated acute kidney injury. Concerted efforts to reduce red blood cell damage during cardiopulmonary bypass, together with early recognition of the at-risk patient and the institution of prompt therapeutic intervention, may improve outcomes. This review addresses the diagnosis, causes, and management of red-discolored urine occurring during and after cardiac surgery.

The science of safety: complications associated with the use of mechanical circulatory support in cardiogenic shock and best practices to maximize safety

Acute mechanical circulatory support (MCS) devices are widely used in cardiogenic shock (CS) despite a lack of high-quality clinical evidence to guide their use. Multiple devices exist across a spectrum from modest to complete support, and each is associated with unique risks. In this review, we summarize existing data on complications associated with the three most widely used acute MCS platforms: the intra-aortic balloon pump (IABP), Impella systems, and veno-arterial extracorporeal membrane oxygenation (VA-ECMO). We review evidence from available randomized trials and highlight challenges comparing complication rates from case series and comparative observational studies where a lack of granular data precludes appropriate matching of patients by CS severity. We further offer a series of best practices to help shock practitioners minimize the risk of MCS-associated complications and ensure the best possible outcomes for patients.

Intra-Aortic Balloon Pump Catheter Insertion Using a Novel Left External Iliac Artery Approach in A Case of Chronic Heart Failure Due to Dilated Cardiomyopathy

Patient: Female, 67-year-old

Final Diagnosis: Heart failure

Symptoms: Chest pain • dyspnoea • poor exercise tolerance

Medication: —

Clinical Procedure: Intraoartic baloon pump insertion – new technique

Specialty: Cardiac surgery

Complications of Temporary Percutaneous Mechanical Circulatory Support for Cardiogenic Shock: An Appraisal of Contemporary Literature

Cardiogenic shock (CS) is associated with hemodynamic compromise and end-organ hypoperfusion due to a primary cardiac etiology. In addition to vasoactive medications, percutaneous mechanical circulatory support (MCS) devices offer the ability to support the hemodynamics and prevent acute organ failure. Despite the wide array of available MCS devices for CS, there are limited data on the complications from these devices. In this review, we seek to summarize the complications of MCS devices in the contemporary era. Using a systems-based approach, this review covers domains of hematological, neurological, vascular, infectious, mechanical, and miscellaneous complications. These data are intended to provide a balanced narrative and aid in risk-benefit decision-making in this acutely ill population.