A case of mitral regurgitation due to bilateral undifferentiated papillary muscles with detailed preoperative diagnosis of associated morphological abnormalities.

Incomplete differentiation of the mitral valve structures during fetal life results in the papillary muscles and tendon cords becoming hypoplastic, a condition termed undifferentiated papillary muscles (UDPM). This fetal abnormality causes a group of diseases that cause mitral valve dysfunction in adult life. Here, we report a case of UDPM centered on the medial posterior apex in which detailed morphological abnormalities were diagnosed preoperatively using echocardiography and three-dimensional computed tomography (3DCT) analysis, contributing to plastic surgery.

Spinal Cord Injury Risk in Open Repair for Descending Thoracic and Thoracoabdominal Aneurysm.

In open repair for descending thoracic aortic aneurysm (DTAA) or thoracoabdominal aortic aneurysm (TAAA), the influence of re-interventions on spinal cord injury (SCI) remains unclear. This study evaluated the relationships between re-interventions, atherosclerosis, and SCI. We retrospectively reviewed 78 patients who underwent open surgical repair for DTAA or TAAA between April 2011 and May 2023.

Repair of a right coronary artery rupture with perforated right ventricle following spontaneous pseudoaneurysm: a case report.

Background: Following the rupture of a coronary artery, a patient's condition usually deteriorates rapidly due to cardiac tamponade. A pseudoaneurysm due to a coronary artery rupture is rare; however, when a spontaneous coronary artery pseudoaneurysm occurs without tamponade, it creates a fistula in the right ventricle, often requiring surgical repair.

Case Presentation: This report describes the case of a 68-year-old man who presented with chest discomfort after a 12-day course of antibiotic treatment for bacteremia.

Supersaturation dependent nucleation of methane + propane mixed-gas hydrate.

Before hydrates can be widely used in industry, we should better understand the problematic issues of hydrate nucleation, particularly its stochastic nature. Here, we report on measurements of the nucleation probability of mixed-gas hydrates in which the guest molecules are a mixture of methane and propane. For the pure cases, at a supersaturation near 1.

Relationship between false lumen morphology and entry tear in acute type A aortic dissection.

Objectives: This study aimed to investigate the relationship between false lumen morphology and the size, aortic segment and position of the entry tear for acute type A aortic dissection.

Methods: The records of patients who underwent emergency operation for acute type A aortic dissection in our institution between April 2011 and May 2022 were examined. Data regarding size, location and position of the entry tear and preoperative computed tomography findings were reviewed.

[Mitral Valve Plasty Late after Tetrology of Fallot Repair:Report of a Case].

The case was a 32-year-old man. Blalock-Taussig shunt was performed at five months-old for tetralogy of Fallot, and intracardiac repair was performed at four years-old. He was admitted with a diagnosis of infective endocarditis.

[Vegetation Developed in the Artificial Graft of Ascending Aorta:Report of a Case].

The case was a 65-year-old woman. She underwent graft replacement of ascending aorta because she developed Stanford type A acute aortic dissection in November 2016. After six months she had a fever, so she underwent contrast-enhanced computed tomography and echocardiography at the previous hospital.