Transcatheter aortic valve implantation is a procedure in the context of non-suitable for open surgery. Measurements of aortic root width, aortic valve surface area, and measurements of the aortic tree, coronary vessels, femoral, and subclavian arteries are of critical importance. In the TAVI procedure, the dimensions of the valve to be placed on the patient are determined by the computed tomography method. Appropriate protocols should be selected for coronary scoring and inclusion of coronary arteries in TAVI imaging and after the shooting, images of coronary arteries such as curved MPR and VRT should be processed, and these images should be prepared to guide the physician who will perform the procedure. The device to be used in imaging must be a tomography device with at least 64 MCDT sections. There are two methods for these shots using ECG triggering. These methods are as follows: Retrospective scan and prospective scan. Bolus tracking method for TAVI imaging is one of the most accurate contrast giving methods that can be used. Automatic dose calibration is used. With the success of the method day by day, the importance of "Computerized Tomography TAVI," which guides physicians during the method, has increase.
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http://dx.doi.org/10.14744/SEMB.2022.90836 | DOI Listing |
JACC Case Rep
January 2025
Division of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA. Electronic address:
Background: Although rare, embolization of left atrial appendage occlusion (LAAO) devices carries a significant morbidity and mortality burden.
Case Summary: An asymptomatic 77-year-old woman with inability to tolerate anticoagulation due to gastrointestinal bleeding presented for 45-day transesophageal echocardiography following LAAO with a Watchman device, which demonstrated incidental device migration to the left ventricular outflow tract (LVOT). Percutaneous extraction was performed using a novel technique with rat tooth/alligator forceps to successfully retrieve the Watchman from the LVOT using a transaortic approach.
BJS Open
March 2025
Liverpool Centre for Cardiovascular Sciences, Liverpool Heart and Chest Hospital, Liverpool, UK.
Background: Acute Stanford type A aortic dissection is a severe emergency condition that, if left untreated, is associated with a high mortality rate. The extent of surgical repair may impact the outcomes of these patients.
Method: Patients operated for acute type A aortic dissection from a multicentre European registry were included.
Can Assoc Radiol J
March 2025
Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
This study investigates the impact of deep learning-based contrast boosting (DL-CB) on image quality and measurement reliability in low-contrast media (low-CM) CT for pre-transcatheter aortic valve replacement (TAVR) assessment. This retrospective study included TAVR candidates with renal dysfunction who underwent low-CM (30-mL: 15-mL bolus of contrast followed by 50-mL of 30% iomeprol solution) pre-TAVR CT between April and December 2023, along with matched standard-CM controls (n = 68). Low-CM images were reconstructed as conventional, 50-keV, and DL-CB images.
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March 2025
Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
Background: The development of aortic valve regurgitation (AR) negatively affects the survival of patients with continuous-flow left ventricular assist device (LVAD) support. Although several risk factors have been identified, little is known about the effect of preoperative aortic root and valve morphology on the development of de novo AR after LVAD implantation.
Methods: Between April 2018 and September 2023, 87 patients underwent durable LVAD implantation at our department.
Infez Med
March 2025
Department of Microbiology, All India Institute of Medical Sciences, Kalyani, India.
We report a rare clinical presentation of a 54-year-old male diagnosed with infective endocarditis caused by , a nutritionally variant streptococcus (NVS) characterized by unique growth requirements and high pathogenic potential. The patient presented with prolonged fever and residual hemiparesis following an ischemic stroke. Blood culture confirmed , and imaging identified vegetations on a bicuspid aortic valve.
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