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Embolic Events After Computed Tomography Contrast Injection in Patients With Interatrial Shunts: A Cohort Study
Conclusion: Among patients with echocardiographic evidence of an interatrial shunt, IV CT contrast administration without an in-line filter does not increase the incidence of cardiac or neurological events.
Source: Journal of Thoracic Imaging - August 25, 2022 Category: Radiology Tags: Original Articles Source Type: research

Paradoxical venous air embolism detected with point-of-care ultrasound: a case report
We present a case of a critical care patient who presented sudden clinical hemodynamic deterioration after the removal of central venous catheter. Hemodynamic evaluation with point-of-care ultrasound (POCUS) showed bubbles in both right and left heart cavities wherewith air embolism facilitated by heart septal defect was suspected. Therefore, the patient was reintubated, supported with vasopressors and a new CVC was inserted to proceed with air aspiration. Shortly after, the patient ’s hemodynamic status improved in terms of vital signs stabilization. 6 h after the event with optimal perfusion markers and diminished sed...
Source: Critical Ultrasound Journal - May 18, 2022 Category: Radiology Source Type: research

Assessment of long-term cardiac adaptation in adult patients with type II atrial septal defect
ConclusionLong-term cardiac adaptation in ASD patients, with RV overfilling and LV underfilling, has a negative impact on systolic RV performance, a phenomenon which likely can be attributed to longitudinal dysfunction of the interventricular septum.Key Points• An LR shunt in type II ASD patients causes cardiac remodeling characterized by RV overfilling and conversely underfilling of the left ventricle.• At the long term, there is evidence of systolic dysfunction of the right ventricle in this group of patients.• Septal dysfunction underlies the observed impairment in RV function.
Source: European Radiology - October 10, 2020 Category: Radiology Source Type: research

Improved detection of coarctation of the aorta using speckle tracking analysis of the fetal heart using the last examination prior to delivery.
CONCLUSIONS: Speckle tracking analysis of multiple ventricular measurements may be helpful to separate fetuses that are suspected to have CoA prenatally from those who do not. This article is protected by copyright. All rights reserved. PMID: 32022339 [PubMed - as supplied by publisher]
Source: The Ultrasound Review of Obstetrics and Gynecology - February 4, 2020 Category: Radiology Authors: DeVore GR, Haxel C, Satou G, Sklansky M, Pelka MJ, Jone PN, Cuneo BF Tags: Ultrasound Obstet Gynecol Source Type: research

Evaluation of atrial septal defects with 4D flow MRI-multilevel and inter-reader reproducibility for quantification of shunt severity.
CONCLUSION: Blood flow and shunt quantification measured at multiple levels and performed by different readers are reproducible and consistent with 4D flow MRI. PMID: 30171383 [PubMed - as supplied by publisher]
Source: Magma - August 31, 2018 Category: Radiology Authors: Chelu RG, Horowitz M, Sucha D, Kardys I, Ingremeau D, Vasanawala S, Nieman K, Paul JF, Hsiao A Tags: MAGMA Source Type: research

Noninvasive quantification of left-to-right shunt by phase contrast magnetic resonance imaging in secundum atrial septal defect: the effects of breath holding and comparison with invasive oximetry
AbstractTo investigate the effect of breath-holding on left-to-right shunts in patients with a secundum atrial septal defect (ASD). Thirty-five consecutive patients with secundum ASDs underwent right heart catheterization and invasive oximetry. Phase-contrast magnetic resonance imaging (MRI) was performed for the main pulmonary artery and ascending aorta. All measurements were obtained during free breathing (FB) (quiet breathing; no breath-hold), expiratory breath-hold (EBH), and inspiratory breath-hold (IBH). Pulmonary circulation flow (Qp) and systemic circulation flow (Qs) were calculated by multiplying the heart rate b...
Source: The International Journal of Cardiovascular Imaging - January 16, 2018 Category: Radiology Source Type: research

Alterations in ventricular pumping in patients with atrial septal defect at rest, during dobutamine stress and after defect closure
ConclusionPumping mechanisms in patients with RV volume overload depend on the aetiology for the RV dilation and not the size of the RV.
Source: Clinical Physiology and Functional Imaging - December 13, 2017 Category: Radiology Authors: Sigurdur S. Stephensen, Ellen Ostenfeld, Katarina Steding ‐Ehrenborg, Ulf Thilén, Einar Heiberg, Hakan Arheden, Marcus Carlsson Tags: Original Article Source Type: research

Serial changes in anatomy and ventricular function on dual-source cardiac computed tomography after the Norwood procedure for hypoplastic left heart syndrome
ConclusionCardiac CT can be used to assess serial changes in anatomy and ventricular function after the Norwood procedure in patients with hypoplastic left heart syndrome.
Source: Pediatric Radiology - September 6, 2017 Category: Radiology Source Type: research

One-stop shop assessment for atrial septal defect closure using 256-slice coronary CT angiography
Conclusions256-slice CCTA allows measuring Qp/Qs and size of defects and rims in patients with secundum ASDs, accomplishing pretreatment evaluation non-invasively and comprehensively.Key Points• Quantification of left-to-right shunting can be performed reliably and accurately by CT.• The sizes of defects and rims can be measured accurately using 256-slice CT.• 256-slice CT permits pretreatment evaluation of ASD non-invasively and comprehensively.
Source: European Radiology - January 4, 2017 Category: Radiology Source Type: research

Quantification of Shunt Volume Through Ventricular Septal Defect by Real-Time 3-D Color Doppler Echocardiography: An Study
Quantification of shunt volume is important for ventricular septal defects (VSDs). The aim of the in vitro study described here was to test the feasibility of using real-time 3-D color Doppler echocardiography (RT3-D-CDE) to quantify shunt volume through a modeled VSD. Eight porcine heart phantoms with VSDs ranging in diameter from 3 to 25 mm were studied. Each phantom was passively driven at five different stroke volumes from 30 to 70 mL and two stroke rates, 60 and 120 strokes/min. RT3-D-CDE full volumes were obtained at color Doppler volume rates of 15, 20 and 27 volumes/s.
Source: Ultrasound in Medicine and Biology - February 2, 2016 Category: Radiology Authors: Meihua Zhu, Muhammad Ashraf, Lydia Tam, Cole Streiff, Sumito Kimura, Eriko Shimada, David J. Sahn Tags: Original Contribution Source Type: research