The aim of our investigation was to test the suitability of a novel method for the analysis of the integrity of an explanted pacemaker lead stabilized by a stent. A coronary sinus lead has been explanted 27 months after implantation and has been examined by optical-, confocal-, x-ray-, and scanning electron microscopy. Several surface injuries were found on the insulation. Based on the surface characteristics, it is possible to define and differentiate the source of damages as well as to measure the extent of injuries. Impedance of the explanted lead has also been measured and electronic integrity has been verified.
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http://dx.doi.org/10.1111/j.1540-8159.2010.02955.x | DOI Listing |
Indian J Nucl Med
November 2024
Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Adenosine is extensively utilized in myocardial stress perfusion imaging for the detection and risk stratification of coronary artery disease. It has a well-established safety profile. The majority of the undesirable effects experienced during adenosine infusion are transient (owing to its brief half-life of ~10 s) and arise from the stimulation of receptors in the atrio-ventricular (AV) node (AV block) and bronchial smooth muscles (bronchospasm).
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2023
Division of Pediatric Cardiac Surgery, Department of Cardiothoracic Surgery, Lucile Packard Children's Hospital, Stanford University, Stanford, California.
Anomalous coronary artery origin is rare and can occur with myocardial bridging. We describe a 28-year-old patient with symptomatic anomalous right coronary artery arising from the left sinus of Valsalva with concomitant myocardial bridging of the left anterior descending artery. It was discovered that the left anterior descending artery ran along the free right ventricular wall with trabeculated myocardium composing the bridge.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2023
Department of Pediatric Cardiovascular Surgery, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
To improve the suboptimal outcomes of the cutback technique for cardiac total anomalous pulmonary venous return, we devised a novel modification for this conventional method that consists of an L-shaped incision of the roof of the coronary sinus into the pulmonary venous confluence, followed by turning over the flap and anchoring it to the endocardium of the left atrium. Our modification provides a large, oval communication between the pulmonary vein confluence and the left atrium and resultant smooth drainage of the pulmonary venous blood, which may prevent turbulent blood flow and the subsequent development of intimal hyperplasia.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
March 2023
Department of Cardiothoracic Surgery, Loyola University Medical Center, Maywood, Illinois.
Sinus of Valsalva aneurysm (SVA) is a rare, abnormal dilation of the aortic root. Although often asymptomatic, SVAs can be manifested with a variety of symptoms, including rupture, which is a highly lethal condition. Most SVAs are small, and most patients present with aneurysm in a single coronary sinus.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
March 2024
Department of Cardiovascular Surgery, Cardiovascular Clinic Campus Bad Neustadt, Bad Neustadt, Germany.
Background: The aim of the study was to evaluate the long-term results after aortic root replacement using a self-assembled composite graft with a biological valve prosthesis.
Methods: Between 1998 and 2021, a total of 308 bio-Bentall procedures were performed by use of the described technique exclusively. The average age of the cohort patients was 68.
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