Rezoning Free Muscle-Sparing Transverse Rectus Abdominis Myocutaneous Flaps Based on Perforasome Groupings and a New Understanding of the Vascular Architecture of the Deep Inferior Epigastric Artery–Based Flaps

Conclusions Two dominant perforators are preferable in DIEP flap breast reconstruction. Lateral perforators play a more important role in flap perfusion than do medial ones. Crossover anastomosis is an effective technology for increasing arterial perfusion areas. Our rezoning shows which areas are better for surgery and which have a high risk of complications—valuable information for a surgeon designing a flap for breast reconstruction.
Source: Annals of Plastic Surgery - Category: Cosmetic Surgery Tags: Research Source Type: research

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Although the choroid contributes to the pathogenesis of age-related macular degeneration (AMD), the role of retinal perfusion is unclear.
Source: American Journal of Ophthalmology - Category: Opthalmology Authors: Tags: Original Articles Source Type: research
This is a previously healthy male teenager who was awoken by chest pain.  He was seen at another hospital and found to have a slightly elevated troponin, then underwent a CT pulmonary angiogram (PE) protocol which revealed a right sided pneumonia.  He was treated with Ceftriaxone and azithromycin.p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Calibri; background-color: #fefefe}The pain is described as located in the midsternal area, radiating to the right arm, described as 8-9/10 and worse with deep inspirations.  He endorsed cough, fever, and body aches in the previous day...
Source: Dr. Smith's ECG Blog - Category: Cardiology Authors: Source Type: blogs
Advances in X-ray computed tomography (CT) over the past 20 years have enabled non-invasive imaging of the coronary arteries, as well as cardiac structure and function. Coronary computed tomography angiography (CTA) has emerged as an accurate non-invasive imaging modality for identifying the anatomic severity of coronary stenoses (1 –3). Similar to other anatomic coronary imaging, coronary CTA alone has been limited in its ability to define the hemodynamic significance of coronary stenoses (4). Since the identification of the presence and severity of ischemia are important parameters for selecting between invasive an...
Source: Journal of Cardiovascular Computed Tomography - Category: Radiology Authors: Source Type: research
A 64-year-old woman with a history of cirrhosis and progressive difficulty breathing underwent pulmonary ventilation/perfusion SPECT to evaluate possible pulmonary embolism. The images demonstrated multiple mismatched ventilation/perfusion defects in both lungs, suggesting pulmonary embolism. However, there was also 99mTc-MAA radioactivity in the brain and bilateral kidney, with a right-to-left shunting rate of 8.8%. In addition, CT pulmonary angiography did not demonstrate embolus. The findings indicated that perfusion defects were caused by hepatopulmonary syndrome.
Source: Clinical Nuclear Medicine - Category: Nuclear Medicine Tags: Interesting Images Source Type: research
Publication date: Available online 5 December 2019Source: American Heart JournalAuthor(s): Odayme Quesada, Ahmed AlBadri, Janet Wei, Chrisandra Shufelt, Puja K. Mehta, Jenna Maughan, Nissi Suppogu, Haider Aldiwani, Galen Cook-Wiens, Michael D. Nelson, Behzad Sharif, Eileen M. Handberg, David R. Anderson, John Petersen, Daniel S. Berman, Louise E.J. Thomson, Carl J. Pepine, C. Noel Bairey MerzBackgroundA significant number of women with signs and symptoms of ischemia with no obstructive coronary artery disease (INOCA) have coronary vascular dysfunction, detected by invasive coronary reactivity testing (CRT). However, the no...
Source: American Heart Journal - Category: Cardiology Source Type: research
We report a 75-year-old woman referred for non-ST-elevation myocardial infarction due to prominent Thebesian veins who displayed a perfusion defect in cardiac magnetic resonance imaging.
Source: Journal of Cardiology Cases - Category: Cardiology Source Type: research
Between 16 and 51% of chronic thromboembolic pulmonary hypertension (CTEPH) patients will have residual pulmonary hypertension (PH) after pulmonary endarterectomy (PEA). Whether residual PH is related to remaining (sub-)segmental macrovascular lesions or to microvascular disease is unknown. New imaging techniques can provide detailed information about (sub-)segmental pulmonary arteries and parenchymal perfusion. The aim of this study was to describe the prevalence after PEA of remaining (sub-)segmental vascular lesions on ECG-gated CT pulmonary angiography (CTPA) and parenchymal hypoperfusion on MR and to relate these imag...
Source: The Journal of Heart and Lung Transplantation - Category: Transplant Surgery Authors: Tags: Original Clinical Science Source Type: research
Conclusion Guided by preoperative CTA imaging, we recommend the consistent use of these conjoined, bipedicled hemi-abdominal flaps for unilateral breast reconstruction, primarily those with delayed reconstruction and radiation deficits. Preoperative CTA imaging is crucial in directing perforator dissection to maximize overlapping perfusion zones and guide in performing anastomoses. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: Journal of Reconstructive Microsurgery - Category: Surgery Authors: Tags: Original Article Source Type: research
Abstract Background: Functional assessment to rule out myocardial ischemia using coronary computed tomography angiography (CCTA) is extremely important and data on the Brazilian population are still limited. Objective: To assess the diagnostic performance of myocardial perfusion by CCTA in the detection of severe obstructive coronary artery disease (CAD) compared with single-photon emission computerized tomography (SPECT). To analyze the importance of anatomical knowledge to understand the presence of myocardial perfusion defects on SPECT imaging that is not identified on computed tomography (CT) scan. Method: A total of 3...
Source: Arquivos Brasileiros de Cardiologia - Category: Cardiology Source Type: research
Abstract Background: Functional assessment to rule out myocardial ischemia using coronary computed tomography angiography (CCTA) is extremely important and data on the Brazilian population are still limited. Objective: To assess the diagnostic performance of myocardial perfusion by CCTA in the detection of severe obstructive coronary artery disease (CAD) compared with single-photon emission computerized tomography (SPECT). To analyze the importance of anatomical knowledge to understand the presence of myocardial perfusion defects on SPECT imaging that is not identified on computed tomography (CT) scan. Method: A total of 3...
Source: Arquivos Brasileiros de Cardiologia - Category: Cardiology Source Type: research
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