Dry Venous Line Initiation and Microemboli Formation in Cardiopulmonary Bypass

Initiating Cardiopulmonary Bypass Using a Dry Venous Line: Implications and Analysis

March 17, 2026 No Comments

This experimental study evaluated the effects of initiating cardiopulmonary bypass (CPB) with a dry venous line using vacuum-assisted venous drainage (VAVD). Researchers compared gaseous microemboli (GME) production with traditional primed venous lines. Results showed significantly higher GME counts and volumes with dry venous lines, particularly at higher vacuum pressures and instant initiation. Lower vacuum levels and delayed initiation reduced GME generation.

Gradual vs Rapid Cardiopulmonary Bypass Initiation During Cardiac Surgery

A Comparative Study of the Effect of Slow and Rapid Initiation of Cardiopulmonary Pump on Tissue Oxygenation Index and Ischemic Complications

March 16, 2026 No Comments

This randomized, double-blind study compared rapid (30-second) versus slow (180-second) initiation of cardiopulmonary bypass (CPB) during coronary artery bypass surgery. Researchers evaluated cerebral tissue oxygenation, arterial oxygen pressure, hematocrit changes, and postoperative delirium. While tissue oxygenation and hematocrit showed no significant differences, the rapid initiation group had lower arterial oxygen levels and a trend toward higher postoperative delirium rates.

Rethinking Cardiopulmonary Bypass Management in the Digital Health Era

March 7, 2026 No Comments

Minimally invasive and robotic cardiac surgery reduce surgical trauma and speed recovery but often require longer cardiopulmonary bypass (CPB) times, increasing risks such as renal injury, neurological complications, and systemic inflammation. This review explores how digital health tools—including continuous physiologic monitoring, machine learning analytics, and digital twin simulations—can transform CPB from a static procedural metric into a dynamically optimized variable, enabling personalized perfusion strategies that improve safety and outcomes in modern cardiac surgery.

A Prospective Observational Study on Role of Intraoperative Renal & Muscle Oxygen Saturation on Post-Operative Serum Creatinine Level in Patients Undergoing Cardiac Surgery on Cardiopulmonary Bypass

March 5, 2026 No Comments

This prospective observational study evaluated whether intraoperative renal (SrO₂) and thenar muscle oxygen saturation (SmO₂), measured using near-infrared spectroscopy (NIRS), could predict post-operative increases in serum creatinine in patients undergoing cardiac surgery with cardiopulmonary bypass. Among 55 patients, a >20% decrease in renal oxygen saturation strongly predicted post-operative creatinine rise, while a 15% decrease in muscle oxygen saturation also showed strong predictive value. Both parameters were significantly correlated.

Goal-Directed Perfusion Monitoring During Cardiopulmonary Bypass

Mini-Compendium on Goal-Directed Perfusion (GDP): Integrating Hemodynamic and Metabolic Determinants of Oxygen Delivery During Cardiopulmonary Bypass

March 5, 2026 No Comments

This narrative review presents a mini-compendium on Goal-Directed Perfusion (GDP), a physiology-based strategy for optimizing cardiopulmonary bypass. GDP integrates oxygen delivery, metabolic indicators, and perfusion pressure to maintain tissue oxygenation and prevent organ injury. Key variables such as DO₂i, O₂ extraction, CO₂ production, and MAP are combined with time-dose models to detect oxygen debt early and personalize perfusion management.

$Stepwise Rescue Therapy for Refractory Vasoplegia$

Evaluating the Impact of a Standardized Protocol for Managing Refractory Vasoplegia After Cardiopulmonary Bypass

March 2, 2026 No Comments

This single-center pre-post study evaluated a standardized stepwise protocol for refractory vasoplegia after cardiopulmonary bypass (CPB). Compared to provider-directed therapy, the protocol—escalating from methylene blue to angiotensin II and hydroxocobalamin—accelerated norepinephrine-equivalent reduction and reduced vasopressor costs by 26% at 48 hours, without worsening hemodynamic or clinical outcomes.

Nanoscale Impact of Cardiopulmonary Bypass on Red Blood Cells

The Impact of Cardiopulmonary Bypass on the Structure and Mechanics of Red Blood Cells: Pilot Study

March 1, 2026 No Comments

This pilot study evaluated how cardiopulmonary bypass (CPB), with and without hypothermic circulatory arrest (HCA), affects red blood cell (RBC) morphology, membrane nanostructure, and mechanical properties using atomic force microscopy. In 14 cardiac surgery patients, CPB increased RBC stiffness, while CPB+HCA caused more severe morphological damage and membrane roughness. The findings suggest distinct cellular injury mechanisms depending on perfusion strategy.

Association Between Cardiopulmonary Bypass Weaning Time and Adverse Outcomes in Patients With Aortic Dissection Who Underwent Total Arch Replacement Combined With Stented Elephant Trunk Implantation

February 28, 2026 No Comments

This retrospective single-center study of 475 patients with acute type A aortic dissection undergoing total arch replacement with stented elephant trunk implantation found that prolonged cardiopulmonary bypass (CPB) weaning time was independently associated with increased in-hospital mortality and postoperative stroke. A cutoff of 90 minutes strongly predicted early mortality and reduced short-term survival, though mid-term survival was unaffected.

Cardiopulmonary Bypass Supporting High-Risk PCI and TAVR

Cardiopulmonary Bypass as Safe and Effective Support for Concomitant High-Risk Percutaneous Coronary Intervention and Transcatheter Aortic Valve Replacement

February 28, 2026 No Comments

This study evaluates the safety and effectiveness of cardiopulmonary bypass (CPB) as hemodynamic support during combined high-risk percutaneous coronary intervention (PCI) and transcatheter aortic valve replacement (TAVR). The authors demonstrate that CPB provides stable circulatory support, enabling complete revascularization and valve implantation in complex patients with severe coronary artery disease and aortic stenosis, with acceptable complication rates and favorable procedural outcomes.

Indexed Delivery of Oxygen Predicts In-Hospital Mortality and Morbidity in Reoperative Adult Cardiac Surgery Patients: A Retrospective Cohort Study

February 20, 2026 No Comments

This retrospective cohort study of 343 reoperative cardiac surgery patients found that low indexed oxygen delivery (DO₂i) during cardiopulmonary bypass independently predicted in-hospital mortality and major morbidity. A median DO₂i below 289 mL/min/m² was associated with a fourfold increase in mortality risk, higher rates of acute kidney injury, cardiac complications, and prolonged ventilation. Optimizing intraoperative oxygen delivery may improve outcomes in this high-risk population.