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https://www.readbyqxmd.com/read/29763366/right-ventricle-performances-with-echocardiography-and-99m-tc-myocardial-perfusion-imaging-in-pulmonary-arterial-hypertension-patients
#1
Jie Liu, Lei Fei, Guang-Qing Huang, Xiao-Ke Shang, Mei Liu, Zhi-Jun Pei, Yong-Xue Zhang
Right heart catheterization is commonly used to measure right ventricle hemodynamic parameters and is the gold standard for pulmonary arterial hypertension diagnosis; however, it is not suitable for patients' long-term follow-up. Non-invasive echocardiography and nuclear medicine have been applied to measure right ventricle anatomy and function, but the guidelines for the usefulness of clinical parameters remain to be established. The goal of this study is to identify reliable clinical parameters of right ventricle function in pulmonary arterial hypertension patients and analyze the relationship of these clinical parameters with the disease severity of pulmonary arterial hypertension...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29752554/secondary-hypogammaglobulinemia-after-rituximab-for-neuromyelitis-optica-a-case-report
#2
Lara Farhat, Jasmeen Dara, Susan Duberstein, Aliva De
A 17-year-old male with history of neuromyelitis optica and seizures presented to the pulmonology clinic for evaluation of recurrent pneumonias. He had received rituximab for the past 6 years. Over the past 2 years, he experienced four episodes of pneumonia. In between these episodes, he would improve briefly but continued to have daily cough that was productive with yellow phlegm. He also had recurrent rhinitis and sinusitis despite multiple antibiotic courses. Review of chest X-rays revealed localized right middle lobe and right lower lobe infiltrates...
May 11, 2018: Drug Safety—Case Reports
https://www.readbyqxmd.com/read/29729609/virtual-surgical-planning-and-three-dimensional-printing-in-multidisciplinary-oncologic-chest-wall-resection-and-reconstruction-a-case-report
#3
Basel Sharaf, M Diya Sabbagh, Aparna Vijayasekaran, Mark Allen, Jane Matsumoto
INTRODUCTION: Primary sarcomas of the sternum are extremely rare and present the surgical teams involved with unique challenges. Historically, local muscle flaps have been utilized to reconstruct the resulting defect. However, when the resulting oncologic defect is larger than anticipated, local tissues have been radiated, or when preservation of chest wall muscles is necessary to optimize function, local reconstructive options are unsuitable. PRESENTATION OF CASE: Virtual surgical planning (VSP) and in house three-dimensional (3D) printing provides the platform for improved understanding of the anatomy of complex tumours, communication amongst surgeons, and meticulous pre-operative planning...
April 30, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29710762/limitations-of-an-automated-embolism-segmentation-method-in-clinical-practice
#4
Ruifeng Wang, Nan Yu, Shen Zhou, Fuwen Dong, Jun Wang, Nan Yin, Lu Bai, Cong Shen, Youmin Guo
PURPOSE: Automated pulmonary embolism (PE) segmentation is frequently used as a preprocessing step in the quantitative analysis of pulmonary embolism. Objective of this study is to analyze the potential limitation in automated PE segmentation using clinical cases. METHODS: A database of 304 computer tomography pulmonary angiography (CTPA) examinations was collected and confirmed to be PE. After processing using an automated scheme, two radiologists classified these cases into four groups of A, B, C and D, which represent 4 different segmentation results namely, (1) entire pulmonary artery identified without motivation artifacts, (2) entire pulmonary artery identified with motivation artifacts, (3) part of the pulmonary artery identified, and (4) none of the pulmonary artery identified...
April 25, 2018: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/29701428/anaesthetic-management-in-a-duchennne-muscle-dystrophy-patient-for-treatment-of-recurrent-pneumothorax
#5
Sara Mota, Liuba Germanova, Joana Cortesão, Teresa Paiva
INTRODUCTION: Duchenne muscular dystrophy (DMD) is an x linked recessive disorder. Long term prognosis is ominous, with development of respiratory distress and cardiomyopathy in advanced stage of the disease and expected death in the teens-to-mid 20s due to respiratory or cardiac failure. Peri-operative management of this patients is challenging due to difficult airway anatomy (macroglossia, limited neck and mandibular mobility). Additionally, they are at risk of developing malignant hyperthermia, rhabdomyolysis and hyperkalemic cardiac arrest when exposed to halogenated inhalational anaesthetics and depolarizing muscle relaxants...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29701402/endovascular-treatment-of-a-complicated-type-b-acute-aortic-dissection-with-3-d-ultrasound-control
#6
Roger Rodrigues, Javier Villaverde, Jorge Noya, Gabriel Anacleto, Óscar Gonçalves
INTRODUCTION: Acute type B aortic dissection (ATBAD), identified within 2 weeks of symptom onset, accounts for 25%-40% of all aortic dissections. Approximately 25% of patients presenting with ATBAD are complicated at admission by malperfusion syndrome or hemodynamic instability, resulting in a high risk of early death when untreated. METHODS: We present a case of a patient with a complicated type B dissection treated by an endovascular technique with control of the sealing zone with transesophageal Echocardiogram (TEE) and 3-D images...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29700864/bicuspid-and-tricuspid-aortic-valve-do-not-have-the-same-ascending-aorta-morphology
#7
N d'Ostrevy, H Ngo, B Magnin, K Azarnoush, L Cassagnes, L Camilleri
INTRODUCTION: Bicuspid aortic valves are associated with histopathological abnormalities of the aorta. Their diameters have been measured in several studies, but the literature concerning changes in the overall anatomy of the ascending aorta is limited. We wanted to know whether the anatomy of the valve, bicuspid or tricuspid, is associated with anatomical differences. MATERIALS AND METHODS: We prospectively included patients requiring aortic valve surgery. The protocol included a chest CT scan before the operation to determine the angulations and straight lengths of aortic segments 0 and 1...
April 26, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29672808/anterior-chest-wall-in-axial-spondyloarthritis-imaging-interpretation-and-differential-diagnosis
#8
Winston J Rennie, Lennart Jans, Anne Grethe Jurik, Iwona Sudoł-Szopińska, Claudia Schueller-Weidekamm, Iris Eshed
Anterior chest wall (ACW) inflammation is not an uncommon finding in patients with axial spondyloarthritis (ax-SpA) and reportedly occurs in 26% of these patients. Radiologists may only be familiar with spinal and peripheral joint imaging, possibly due to the inherent challenges of ACW imaging on some cross-sectional imaging modalities. Knowledge of relevant joint anatomy and the location of sites of inflammation allows the interpreting radiologist to better plan appropriate imaging tests and imaging planes...
April 2018: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/29657908/a-rare-case-of-coronary-artery-embolism-in-a-patient-with-d-transposition-of-the-great-arteries-with-prior-mustard-repair
#9
Prince Sethi, Udit Bhatnagar, Kelly Steffen, Edgard Bendaly, Adam Stys
The dextro-transposition of great arteries (d-TGA) is a rare, congenital, cyanotic heart disease and there is a paucity of data regarding long-term cardiovascular outcomes. We present a rare case of non-ST-elevation myocardial infarction (NSTEMI) in a patient with surgically repaired d-TGA. A 43-year-old male who had previously undergone a Mustard atrial switch palliative procedure presented with chest pain and diaphoresis and was diagnosed with NSTEMI. A coronary angiogram revealed a small, underdeveloped, left anterior descending and a large, left circumflex coronary artery with an acute embolic lesion...
February 12, 2018: Curēus
https://www.readbyqxmd.com/read/29617205/a-novel-method-to-extend-a-partial-body-ct-for-the-reconstruction-of-dose-to-organs-beyond-the-scan-range
#10
Gleb A Kuzmin, Matthew M Mille, Jae Won Jung, Choonik Lee, Christopher Pelletier, Gamal Akabani, Choonsik Lee
Epidemiological investigation is an important approach to assessing the risk of late effects after radiotherapy, and organ dosimetry is a crucial part of such analysis. Computed tomography (CT) images, if available, can be a valuable resource for individualizing the dosimetry, because they describe the specific anatomy of the patient. However, CT images acquired for radiation treatment planning purposes cover only a portion of the body near the target volume, whereas for epidemiology, the interest lies in the more distant normal tissues, which may be located outside the scan range...
April 4, 2018: Radiation Research
https://www.readbyqxmd.com/read/29571427/myocardial-infarction-with-no-obstructive-coronary-artery-disease-angiographic-and-clinical-insights-in-patients-with-premature-presentation
#11
Valeria Raparelli, Malik Elharram, Avi Shimony, Mark J Eisenberg, Asim N Cheema, Louise Pilote
BACKGROUND: Premature myocardial infarction (MI) is an increasingly prevalent cause of morbidity and mortality worldwide. A subset of patients, predominantly young women, present with MI with no obstructive coronary artery disease (MINOCA), a nomenclature gaining recognition. However, few data exist on presentation and prognosis according to the severity of coronary artery disease (CAD). METHODS: We studied patients with premature (younger than 55 years of age) acute MI enrolled in a large cohort in 24 centres across Canada...
April 2018: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/29562790/role-of-computed-tomography-angiography-for-heartmate-ii-left-ventricular-assist-device-thrombosis
#12
Sarah N Yu, Jiho Han, Koji Takeda, Jonathan N Ginns, Paul A Kurlansky, Arthur R Garan, Melana Yuzefpolskaya, Veli K Topkara, Paolo C Colombo, Yoshifumi Naka, Hiroo Takayama
INTRODUCTION: Device thrombosis is one of the most devastating complications of HeartMate II left ventricular assist devices. The purpose of this study is to assess the anatomical properties that the inflow and outflow computed tomography angiography provides in assessing for left ventricular assist device thrombosis, as well as their impact on clinical management and postoperative outcomes. METHODS: Between April 2010 and December 2016, 22 patients who received a HeartMate II left ventricular assist device implantation were readmitted for suspected device thrombosis and underwent a computed tomography angiography for workup...
March 1, 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29556698/-specific-characteristics-of-chest-x%C3%A2-ray-in-childhood-basics-for-radiologists
#13
K Schneider
The radiographic technique of pediatric chest X‑rays is substantially different from that in adults. In nearly all cases ap/pa X‑rays are sufficient and lateral radiographs are rarely needed. In the first years of life the thymus may overshadow the heart, the great vessels and the lung hila. The most important anatomical structures essential for diagnosing pathological findings of the lungs and mediastinum are the trachea with the bifurcation and the main bronchi with the adjacent great vessels. For the assessment of distended lungs and intrathoracic consolidations, fundamental knowledge of the anatomy in childhood and malformations which can involve the airways, the lungs, the heart, as well as systemic and pulmonary vessels are indispensable...
March 19, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29488043/evaluation-of-kawasaki-s-disease-associated-coronary-artery-aneurysms-with-3d-ct-cinematic-rendering
#14
Steven P Rowe, Stefan L Zimmerman, Pamela T Johnson, Elliot K Fishman
Kawasaki's disease (KD) is a vasculitis that predominantly affects children and can lead to the development of coronary artery aneurysms. These aneurysms can subsequently thrombose and occlude, which may lead to chest pain and other signs and symptoms of acute coronary syndrome in young patients. Coronary CT angiography, including 3D visualization techniques, is a common modality used in the follow-up of KD patients. In this series of three patients, we present the typical coronary artery imaging findings that can appear in these patients, with an emphasis on the use of the novel 3D technique of cinematic rendering (CR)...
February 27, 2018: Emergency Radiology
https://www.readbyqxmd.com/read/29465419/assessment-of-pcxmc-for-patients-with-different-body-size-in-chest-and-abdominal-x-ray-examinations-a-monte-carlo-simulation-study
#15
David Borrego, Erin M Lowe, Cari M Kitahara, Choonsik Lee
A PC Program for x ray Monte Carlo (PCXMC) has been used to calculate organ doses in patient dosimetry and for the exposure assessment in epidemiological studies of radiogenic health related risks. This study compared the dosimetry from using the built-in stylized phantoms in the PCXMC to that of a newer hybrid phantom library with improved anatomical realism. We simulated chest and abdominal x ray projections for 146 unique body size computational phantoms, 77 males and 69 females, with different combinations of height (125-180 cm) and weight (20-140 kg) using the built-in stylized phantoms in the PCXMC version 2...
March 21, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29463817/difficulties-with-tunneling-of-the-cuffed-catheter-a-single-centre-experience
#16
Tomasz Gołębiowski, Mariusz Kusztal, Krzysztof Letachowicz, Jerzy Garcarek, Tomasz Porażko, Jan Penar, Magdalena Krajewska, Wacław Weyde, Marian Klinger
Tunneling of the cuffed catheter for hemodialysis is an important part of insertion procedure with faulty techniques being the cause of catheter dysfunctions. We retrospectively analyzed 737 double-lumen cuffed catheter procedures between 2008 and 2015 in patients aged 60 ± 15years, requiring renal replacement therapy. Complications of tunneling included kinking, bleeding and other problems. In 20 of 737 (2.7%) procedures, the catheter kinked, which was observed in 7.7% of silicone and 0.6% of polyurethane catheters...
February 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29449442/design-and-rationale-of-the-ripcord-2-trial-does-routine-pressure-wire-assessment-influence-management-strategy-at-coronary-angiography-for-diagnosis-of-chest-pain-a-randomized-controlled-trial-to-compare-routine-pressure-wire-assessment-with-conventional-angiography
#17
REVIEW
Mostafa Elguindy, Rod Stables, Zoe Nicholas, Ian Kemp, Nick Curzen
BACKGROUND: Investigation of anginal chest pain has traditionally involved either assessment of the coronary anatomy by angiography or noninvasive testing for reversible ischemia. Invasive pressure wire assessment at the time of angiography offers information on both anatomy and physiology. Fractional flow reserve-guided percutaneous coronary intervention is associated with lower resource utilization and improved clinical outcome compared with angiographic guidance alone. However, the value of routine fractional flow reserve of all major coronary vessels at the time of diagnostic angiography has not been established in a randomized trial despite persuasive observational data...
February 2018: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/29444748/aortopulmonary-collaterals-in-neonates-with-d-transposition-of-the-great-arteries-clinical-significance-early-after-arterial-switch-operation
#18
Alexandra Wipf, Martin Christmann, Susanne Navarini-Meury, Hitendu Dave, Daniel Quandt, Walter Knirsch, Oliver Kretschmar
OBJECTIVES: Purpose of this study is to evaluate the clinical significance of major aortopulmonary collateral arteries (MAPCAs) during the early postoperative course after arterial switch operation (ASO) in d-transposition of the great arteries (dTGA). METHODS: Clinical data of 98 patients with simple dTGA between January 2007 and December 2016 at the University Children's Hospital Zurich, Switzerland were analyzed retrospectively. RESULTS: 37 from 98 patients (38%) required cardiac catheterization (CC) due to an early complicated postoperative course or difficult coronary transfer due to special coronary anatomy...
May 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29399473/pre-and-post-operative-visualization-of-neonatal-esophageal-atresia-tracheoesophageal-fistula-via-magnetic-resonance-imaging
#19
Nara S Higano, Alister J Bates, Jean A Tkach, Robert J Fleck, Foong Y Lim, Jason C Woods, Paul S Kingma
Esophageal atresia (EA) is a relatively uncommon congenital anomaly, often observed in conjunction with tracheoesophageal fistula (TEF). Surgical repair in neonates typically takes place with little information about the pre-existing EA/TEF structure because there are currently no acceptable tools for evaluating EA/TEF anatomy prior to repair; chest x-ray radiograph does not identify malformation sub-type or gap length, while x-ray computed tomography (CT) demonstrate an unacceptably high exposure to ionizing radiation...
February 2018: Journal of Pediatric Surgery Case Reports
https://www.readbyqxmd.com/read/29394425/hospital-readmission-rates-following-ami-potential-interventions-to-improve-efficiency
#20
Jennifer T Nguyen, Kairav Vakil, Selcuk Adabag, Anders Westanmo, Richard Madlon-Kay, Areef Ishani, Santiago Garcia, Edward O McFalls
OBJECTIVES: Quality of care utilization measures for patients admitted to the hospital with an acute myocardial infarction (AMI) include length of stay (LOS) and 30-day readmission rates. Our aim was to test whether efforts resulting in reduced LOS in patients diagnosed as having AMI would result in a higher risk of readmission within 30 days of hospital discharge and whether specific interventions could be targeted to reduce readmissions. METHODS: Using data supplied by the Veterans Affairs Inpatient Evaluation Center, we analyzed both the readmissions within 30 days of an AMI and LOS and determined the timing of readmissions and associated diagnoses...
February 2018: Southern Medical Journal
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