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[New approach for defibrillation after cardiac reoperation]
Insights
Self-adhesive electrode pads improve safety during cardiac reoperations by enabling early defibrillation. This system reduces complications, blood loss, and operating time, enhancing patient outcomes.
Area of Science:
- Cardiovascular Surgery
- Medical Devices
- Electrophysiology
Background:
- Cardiac reoperations carry significant risks, including ventricular arrhythmias, which increase perioperative mortality.
- Defibrillation is often delayed until after pericardial dissection, limiting its effectiveness in critical moments.
Purpose of the Study:
- To evaluate the efficacy and benefits of using self-adhesive electrode pads for external defibrillation during cardiac reoperations.
- To assess the impact of this system on perioperative complications and surgical outcomes.
Main Methods:
- Prospective study involving 132 patients undergoing cardiac reoperation over six months.
- Utilized self-adhesive electrode pads placed on the cardiac apex and infrascapular area, connected to standard defibrillators.
- Monitored for defibrillation events, complications, blood loss, transfusion requirements, and operating time.
Main Results:
- Eighteen of 132 patients (14%) required intraoperative defibrillation, successfully managed with the electrode pads.
- The system facilitated early defibrillation, even with adhesions, and did not impede the surgical field.
- Observed benefits included reduced dissection, decreased blood loss and transfusions, and shorter operating times.
Conclusions:
- Self-adhesive electrode pads are effective and safe for external defibrillation during cardiac reoperations, mitigating risks associated with arrhythmias.
- The system offers significant advantages, including improved patient safety, reduced surgical invasiveness, and enhanced efficiency.
- Continued use of pads post-operatively aids in managing emergent arrhythmias, further improving patient care.
Abstract:
Cardiac reoperations are associated with several complications such as ventricular lacerations, major vessel trauma, and ventricular arrhythmias. As it is impossible to defibrillate before ending the pericardial dissection, this latter complication increases the mortality rate in the perioperative period. In those instances, the self-adhesive electrode pads for external defibrillation were proven effective for cardioversion and defibrillation, even in the presence of adherences. In our institution, these electrode pads are compulsory for all patients requiring cardiac reoperation. The apex pad covers the cardiac apex in the V5 and V6 electrode derivations, while the posterior pad is placed over the right infrascapular area, which reduces the risk of hazardous current concentration. In addition, it does not obstruct the operative site and the pads can be connected to a R2 cable adaptor compatible with regular leading defibrillating systems. The electrode pads were tested on 132 of the 508 patients (26%) requiring cardiac surgery during a 6-month period. Eighteen of these cases (14%) required one or more defibrillating during the operation. The benefits of using this system (R2 Corporation, Skokie, Ill) include: a smaller dissection, reduced blood loss, lower numbers of blood transfusions, and decreased operating time. When the electrode pads remain in place during the patient's transfer to the intensive care unit and the first hours thereafter, they can be used again this time to control arrhythmia complications after the surgery.