Publications by authors named "Leon M Putman"

Article Synopsis
  • Traumatic avulsion of the right main bronchus in children is typically caused by blunt trauma or traffic accidents.
  • The preferred treatment is primary repair through suturing, as these lesions can be life-threatening and require urgent surgery.
  • This report discusses two successful cases of bronchial avulsion in children that were repaired using suturing and extracorporeal membrane oxygenation.
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 Nutcracker phenomenon (NCP) can occur due to various anatomical anomalies. Anterior and posterior NCP are defined in the literature. Posterior NCP combined with left atrial isomerism is a rare condition.

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Transposition of the great arteries (TGA) is caused by discordance between the great arteries and the ventricles. If left untreated, this anomaly has a disastrous perspective. More recent surgical approach for correction includes the Lecompte technique in which the pulmonary bifurcation is transposed anterior to the aorta, which may be less physiologic.

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Background: For patients with coronary artery disease undergoing coronary bypass surgery, acetylsalicylic acid (ASA) currently represents the gold standard of antiplatelet treatment. However, adverse cardiovascular event rates in the first year after coronary artery bypass grafting (CABG) still exceed 10%. Graft failure, which is predominantly mediated by platelet aggregation, has been identified as a major contributing factor in this context.

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Objectives: Left ventricular assist device (LVAD) implantation has become an effective treatment for end-stage heart failure patients. However, LVAD support disrupts the natural intracavitary blood flow path through the heart, introducing flow patterns potentially associated with thrombosis especially around the inflow cannula. We present initial insights into in vitro 4D flow magnetic resonance imaging (MRI)-based analysis of flow patterns and an enzyme-activated milk test in a porcine left ventricular (LV) model during LVAD support, in a standard implant technique and in combination with a novel cone-shaped LV sparing prosthesis.

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Objectives: To compare the Lecompte technique and the spiral anastomosis (complete anatomic correction) two decades after arterial switch operation (ASO).

Methods: Nine patients after primary ASO with Lecompte and 6 selected patients after spiral anastomosis were evaluated 20.8 ± 2.

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Objectives: The currently most frequently used technique for the arterial switch operation (ASO) in simple transposition of the great arteries (TGA) includes the transposition of the pulmonary artery anterior to the ascending aorta. This arterial arrangement is less anatomical, and although the initial results are excellent, some long-term data are indicating a certain risk of morbidity, encouraging the search for more physiological techniques. As a first step, we studied the feasibility of anatomical spiral anastomoses of the great vessels in vitro.

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Objective: At this moment, no risk stratification models are available for adult congenital cardiac surgery. This study aims to identify a suitable stratification tool for the adult congenital heart surgery population. Pediatric congenital cardiac surgery score models were therefore tested in an adult congenital population.

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Article Synopsis
  • Increasing numbers of adults with congenital heart disease (CHD) are undergoing cardiac surgery, and this study reviews 17 years of surgeries to identify factors influencing outcomes and evaluate the EuroSCORE risk model.
  • A total of 963 procedures were conducted on 830 adult CHD patients, with a notable 1.5% thirty-day mortality rate, while 49% of the surgeries were re-do procedures for various heart conditions.
  • The study found that while surgery in this population generally results in favorable outcomes, the EuroSCORE is not an effective tool for accurately predicting risks in adult CHD patients.
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