Novel application of indocyanine green fluorescence imaging for real-time detection of thrombus in a membrane oxygenator.

Extracorporeal membrane oxygenation (ECMO) plays an important role in the coronavirus disease 2019 (COVID-19) pandemic. Management of thrombi in ECMO is generally an important issue; especially in ECMO for COVID-19 patients who are prone to thrombus formation, the thrombus formation in oxygenators is an unresolved issue, and it is very difficult to deal with. To prevent thromboembolic complications, it is necessary to develop a method for early thrombus detection.

Evaluation of real-time thrombus detection method in a magnetically levitated centrifugal blood pump using a porcine left ventricular assist circulation model.

Pump thrombosis induces significant complications and requires timely detection. We proposed real-time monitoring of pump thrombus in a magnetically levitated centrifugal blood pump (mag-lev pump) without using additional sensors, by focusing on the changes in the displacement of the pump impeller. The phase difference between the current and displacement of the impeller increases with pump thrombus.

Suction-fixing surgical device for assisting liver manipulation with laparoscopic forceps.

Purpose: Noninvasiveness and stability are significant issues in laparoscopic liver resection. Inappropriate grasping force can cause damage or serious bleeding to the liver. In addition, instability of grasping can result unsafe operations or wavered cutting.

Verification of a thrombus induction method at the target point inside the blood pump using a fibrinogen coating for a thrombus detection study.

Although the magnetically levitated centrifugal blood pump (mag-lev pump) is considered superior to other pumps in antithrombogenicity, thrombotic complications are still reported. Research into thrombus detection inside a mag-lev pump is very important for solving this problem. Our research group has already proposed a method to detect a thrombus inside a mag-lev pump in real time without an additional sensor, which is named the impeller vibration method.

What Did Endovascular Aortic Repair Bring for the Treatment Strategy of Abdominal Aortic Aneurysm?

: We examined the effects of the introduction of endovascular aortic repair (EVAR) on treatment for abdominal aortic aneurysms (AAAs). : We compared patients in the following three periods: period I (January 2002-December 2006, 105 patients), period II (January 2007-December 2011, 242 patients, duration of 5 years after the introduction of EVAR), and period III (January 2012-December 2016, 237 patients, duration of 5 years after period II). We used the American Society of Anesthesiologists (ASA) classification for risk assessment.

[Redo Valve Replacement of Wada-Cutter Prosthetic Valve at Tricuspid Valve Position 47 Years After Implantation;Report of a Case].

We experienced an explantation of Wada-Cutter prosthetic tilting disk valve of 47 years after implantation. The patient was 53 years old female who underwent the 1st operation for Ebstein's anomaly, which included tricuspid valve replacement (TVR), closure of atrial septal defect (ASD) and posterior annulorrhaphy when she was 6 years old. She was doing well after the 1st operation without symptom,but dyspnea and systemic edema worsened recently though increased admission of diuretics.