Atrial septal defect (ASD) with bidirectional shunt

Subcostal four chamber view shows a large defect in the interatrial septum (ASD). Right atrium (RA) and right ventricle (RV) are dilated, while left atrium (LA) and left ventricle (LV) are not. Blue color on colour flow mapping indicates right to left shunt across the atrial septal defect (R>L Shunt) in the subcostal view as the flow is away from the transducer. This view shows red coloured flow across the ASD indicating a left to right shunt (L>R shunt). In addition there is a mosaic (multicoloured) jet spreading from the closed tricuspid valve into the right atrium, due to tricuspid regurgitation (TR jet). Bidirectional shunt can occur in ASD even without pulmonary hypertension. This is because transient right to left shunt can occur in certain phases of respiration. The volume of that right to left shunt is so small that there wont be any clinical cyanosis. But here there is severe pulmonary hypertension which has caused reversal of shunt, though some left to right shunting is also persisting. As the pulmonary hypertension progresses, the shunt may become fully right to left.
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Cardiology Echocardiogram Library Echocardiography Source Type: blogs

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AbstractIn this review, we provide a brief description of recently published articles addressing topics relevant to pediatric cardiologists. Our hope is to provide a summary of the latest articles published recently in other journals in our field. The articles address (1) outcomes after anomalous aortic origin of the coronary artery repair which showed relief of ischemia in most patients with low mortality, (2) the role of lymphatic imaging to predict post-Fontan complications which showed that lymphatic imaging by MRI may have an added prognostic value, (3) European guidelines for participation in competitive sports in co...
Source: Pediatric Cardiology - Category: Cardiology Source Type: research
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Source: Cardiophile MD - Category: Cardiology Authors: Tags: HBC Paradoxical splitting of second heart sound sail sound Wide fixed split wide split Source Type: blogs
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Source: Cardiophile MD - Category: Cardiology Authors: Tags: HBC Source Type: blogs
This study aimed to investigate risk factors for poor outcomes in infants with isolated atrial septal defect (ASD) and pulmonary hypertension who had unexpectedly fatal course. We retrospectively reviewed 22 infants with isolated ASD and pulmonary hypertension, and analyzed the relationship between clinical outcomes and pulmonary hemodynamic parameters including pulmonary arterial resistance (Rp) and compliance (Cp) based on cardiac catheterization among them. Age and weight at cardiac catheterization were 5 (1 –11) months and 4.9 (3.1–9.2) kg, respectively. There were 17 individuals with Down syndrome. Pulmona...
Source: Pediatric Cardiology - Category: Cardiology Source Type: research
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Source: The Journal of Heart and Lung Transplantation - Category: Transplant Surgery Authors: Tags: ORIGINAL PRE-CLINICAL SCIENCE Source Type: research
AbstractElective closure of atrial septal defect (ASD) is usually recommended during preschool ages. However, ASD may contribute to deteriorating health in the presence of significant comorbidity and, thus, may need earlier closure. There is a lack of clarity regarding the indications for and outcomes after ASD closure in infancy and early childhood. We investigated the benefits and safety of surgical ASD closure in symptomatic patients under 2  years of age. Retrospective chart review was conducted in patients who underwent surgical ASD closure within the first 2 years of life. Of 31 symptomatic ASD patients, 22...
Source: Pediatric Cardiology - Category: Cardiology Source Type: research
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Source: Cardiophile MD - Category: Cardiology Authors: Tags: Medicine MCQ - CVS Source Type: blogs
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Source: American Journal of Physiology. Heart and Circulatory Physiology - Category: Physiology Authors: Tags: Am J Physiol Heart Circ Physiol Source Type: research
We report the case of a patient with a large atrial septal defect (65 mm) and hemodynamic instability who underwent laparoscopic cholecystectomy under total intravenous anesthesia with careful hemodynamic monitoring. Thorough surveillance and effort could help to make the surgery successful.
Source: Saudi Journal of Anaesthesia - Category: Anesthesiology Authors: Source Type: research
Publication date: Available online 11 February 2020Source: Journal of Veterinary CardiologyAuthor(s): Takeshi Mizuno, Masashi Mizuno, Kayoko Harada, Hiroshi Takano, Asako Shinoda, Arane Takahashi, Kazuya Mamada, Kazuki Takamura, Ayaka Chen, Koji Iwanaga, Shin Ono, Masami UechiAbstractA 5-year-old male Toy Poodle was referred for corrective surgery of an atrial septal defect. A sinus venosus-type atrial septal defect (ASD) with partial anomalous venous connection, suspected pulmonary hypertension and pulmonary edema was confirmed by radiography, echocardiography, and cardiac computed tomography. Thoracic radiographs showed ...
Source: Journal of Veterinary Cardiology - Category: Veterinary Research Source Type: research
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