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Tissue doppler imaging

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https://www.readbyqxmd.com/read/29928010/association-between-right-ventricle-two-and-three-dimensional-echocardiography-and-exercise-capacity-in-patients-with-reduced-left-ventricular-ejection-fraction
#1
Aleksandra Sljivic, Milena Pavlovic Kleut, Zoran Bukumiric, Vera Celic
INTRODUCTION: Echocardiography represents the most commonly performed noninvasive cardiac imaging test for patients with heart failure (HF). The aim of this study was to assess the relationship between exercise capacity parameters (peak oxygen consumption (VO2) and the minute ventilation-carbon dioxide production relationship (VE/VCO2)), two-dimensional speckle-tracking echocardiography (2D-STE) and three-dimensional echocardiography (3DE) imaging of right ventricular (RV) function in HF patients with reduced ejection fraction (EF)...
2018: PloS One
https://www.readbyqxmd.com/read/29922650/ultrasound-and-infrared-based-imaging-modalities-for-diagnosis-and-management-of-cutaneous-diseases
#2
REVIEW
Sheliza Halani, F Stuart Foster, Maksym Breslavets, Neil H Shear
Non-invasive bedside imaging tools are becoming more prevalent for assessing cutaneous lesions. Ultrasound used at specific frequencies allows us to assess margins of lesions to minimize the extent of the biopsy that is performed and improve cosmetic outcomes. Vascularity, seen on Doppler ultrasound and contrast-enhanced ultrasound, and stiffness, assessed on tissue elastography, can help differentiate between benign and malignant lesions for clinicians to be more judicious in deciding whether to biopsy. Moreover, research has shown the efficacy in using ultrasound in monitoring flares of hidradenitis suppurativa, a disease affecting apocrine gland-rich areas of the body, for which the current gold standard involves examining and scoring inflammatory lesions with the naked eye...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29911451/effect-of-well-controlled-gestational-diabetes-on-left-ventricular-diastolic-dysfunction-in-neonates
#3
Yazdan Ghandi, Danial Habibi, Khadijeh Nasri, Saeed Alinejad, Hassan Taherahmad, Ali Arjmand Shabestari, Ali Nematinejad
BACKGROUND: There are some evidences supporting the relation between gestational diabetes mellitus (GDM) and diastolic dysfunction. The aim of our study was to investigate the effect of well-controlled GDM on morphological and functional myocardium. MATERIALS AND METHODS: We designed a prospective cross-sectional study to evaluate left ventricular (LV) diastolic function of 60 neonates born from mothers with well-controlled GDM (case group) on days of 3-5 after birth...
June 17, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29907232/intramuscular-e-selectin-adeno-associated-virus-gene-therapy-promotes-wound-healing-in-an-ischemic-mouse-model
#4
Punam P Parikh, Roberta M Lassance-Soares, Hongwei Shao, Manuela M Regueiro, Yan Li, Zhao-Jun Liu, Omaida C Velazquez
BACKGROUND: Poor wound healing in critical limb ischemia (CLI) is attributed to impaired neovascularization and reperfusion. Optimizing the ischemic wound with adhesion molecules that enhance stem cell homing may revolutionize treatment. The purpose of this study is to test the efficacy of adhesion molecule E-selectin on wound healing in an ischemic mouse wound. METHODS: Adult FVB/NJ mice underwent unilateral femoral artery and vein ligation to induce CLI. A 4-mm punch biopsy wound was created on the anterior thigh to simulate ischemic wounds...
August 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29905521/contrast-enhanced-ultrasound-to-visualize-hemodynamic-changes-after-rodent-spinal-cord-injury
#5
Zin Z Khaing, Lindsay N Cates, Dane M DeWees, Alexander Hannah, Pierre Mourad, Matthew Bruce, Christoph P Hofstetter
OBJECTIVE Traumatic spinal cord injury (tSCI) causes an almost complete loss of blood flow at the site of injury (primary injury) as well as significant hypoperfusion in the penumbra of the injury. Hypoperfusion in the penumbra progresses after injury to the spinal cord and is likely to be a major contributor to progressive cell death of spinal cord tissue that was initially viable (secondary injury). Neuroprotective treatment strategies seek to limit secondary injury. Clinical monitoring of the temporal and spatial patterns of blood flow within the contused spinal cord is currently not feasible...
June 15, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29894356/is-there-a-role-for-tissue-doppler-imaging-in-predicting-thromboembolic-risk-a-challenging-case-report-of-dilated-cardiomyopathy-with-intracardiac-thrombus-and-recurrent-stroke
#6
Andrea Sonaglioni, Massimo Baravelli, Antonio Vincenti, Michele Lombardo, Claudio Anzà, Gian Luigi Nicolosi
No abstract text is available yet for this article.
June 11, 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29893362/detection-of-subclinical-anthracyclines-cardiotoxicity-in-children-with-solid-tumor
#7
Hui-Min Hu, Xiao-Lin Zhang, Wei-Ling Zhang, Dong-Sheng Huang, Zhong-Dong Du
Background: Cardiotoxicity is one of the most serious chronic complications of anthracyclines therapy. Assessment of the left ventricular ejection fraction (LVEF) fails to detect subtle cardiac dysfunction of left ventricular (LV). This study aimed to detect and evaluate new parameters of subclinical anthracyclines' cardiotoxicity in children with solid tumor. Methods: A detailed echocardiographic examination was performed in 36 children with hepatoblastoma or rhabdomyosarcoma after receiving anthracyclines' chemotherapy and 36 healthy controls from January 2015 to December 2016...
June 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29879750/artifacts-in-sonography-part-3
#8
Jörg A Bönhof, Glen McLaughlin
As a continuation of parts 1 1 and 2 2, this article discusses artifacts as caused by insufficient temporal resolution, artifacts in color and spectral Doppler sonography, and information regarding artifacts in sonography with contrast agents. There are artifacts that occur in B-mode sonography as well as in Doppler imaging methods and sonography with contrast agents, such as slice thickness artifacts and bow artifacts, shadows, mirroring, and artifacts due to refraction that appear, for example, as double images, because they are based on the same formation mechanisms...
June 2018: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/29878938/cardiac-structure-and-function-in-morbidly-obese-parturients-an-echocardiographic-study
#9
Bigna S Buddeberg, Nicole L Fernandes, Adri Vorster, Blanche J Cupido, Carl J Lombard, Justiaan L Swanevelder, Thierry Girard, Robert A Dyer
BACKGROUND: The increasing prevalence of obesity worldwide is a major threat to global health. Cardiac structural and functional changes are well documented for obesity as well as for pregnancy, but there is limited literature on morbidly obese parturients. We hypothesized that there are both cardiac structural and functional differences between morbidly obese pregnant women and pregnant women of normal body mass index (BMI). METHODS: This prospective cross-sectional study was performed in 2 referral maternity units in Cape Town, South Africa, over a 3-month period...
June 5, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29877218/is-systolic-right-ventricular-function-reduced-after-thoracic-non-cardiac-surgery-a-propensity-matched-echocardiographic-analysis
#10
Henning Johann Steffen, Sebastian Kalverkamp, Rashad Zayat, Rüdiger Autschbach, Jan-Wilhelm Spillner, Andreas Hagendorff, Nima Hatam
PURPOSE: To assess whether thoracic non-cardiac surgery has an influence on right ventricular function (RVF) compared to known impaired postoperative RV function after cardiac surgery. METHODS: In all, 50 patients (mean age: 61 years), who underwent thoracic non-cardiac surgery were included and matched using propensity score to 50 patients, receiving coronary artery bypass graft surgery (CABG) (CABGmatched ). All patients had transthoracic echocardiography (TTE) including two-dimensional speckle tracking (2D-STE) and tissue Doppler imaging (TDI) pre- and 1 week postoperatively...
June 7, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29869055/pyruvate-kinase-m2-increases-angiogenesis-neurogenesis-and-functional-recovery-mediated-by-upregulation-of-stat3-and-focal-adhesion-kinase-activities-after-ischemic-stroke-in-adult-mice
#11
Dongdong Chen, Ling Wei, Zhi-Ren Liu, Jenny J Yang, Xiaohuan Gu, Zheng Z Wei, Li-Ping Z Liu, Shan Ping Yu
Ischemic stroke remains a serious threat to human life. Generation of neuronal and vascular cells is an endogenous regenerative mechanism in the adult brain, which may contribute to tissue repair after stroke. However, the regenerative activity is typically insufficient for significant therapeutic effects after brain injuries. Pyruvate kinase isoform M2 (PKM2) is a key regulator for energy metabolism. PKM2 also has nonmetabolic roles involving regulations of gene expression, cell proliferation, and migration in cancer cells as well as noncancerous cells...
June 4, 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29866775/risk-stratification-of-genetic-dilated-cardiomyopathies-associated-with-neuromuscular-disorders-role-of-cardiac-imaging
#12
REVIEW
Pieter van der Bijl, Victoria Delgado, Marianne Bootsma, Jeroen J Bax
The etiology of dilated cardiomyopathy (DCM) can be grouped as either genetic or nongenetic. More than 50 pathogenic genes have been described, with sarcomeric and lamin A/C mutations being the most common. Mutation carriers for genetic DCM are often asymptomatic until cardiac disease manifests with heart failure, arrhythmias, or sudden cardiac death. Preventive strategies are promising but can only be applied and tested adequately if genetic DCM can be diagnosed at an early stage. Early diagnosis of mutation carriers that may develop overt DCM requires advanced imaging techniques that can detect subtle structural and functional abnormalities...
June 5, 2018: Circulation
https://www.readbyqxmd.com/read/29866523/right-ventricular-function-after-creation-of-atriovenous-fistula-in-patients-with-end-stage-renal-disease
#13
Karim Said, Mohamed Hassan, Mahmoud Farouk, Essam Baligh, Bahaa Zayed
BACKGROUND: Right ventricular (RV) dysfunction is associated with increased risk of heart failure and mortality in end stage renal disease (ESRD) patients. Accumulating evidence suggests an association between atriovenous fistula (AVF) and RV dysfunction; however, there is no adequate data on the relation between AVF characteristics and risk of RV dysfunction after AVF creation. METHODS: The study included 30 ESRD patients (median age: 44years, 17 male) who had their first autogenous mature AVF...
April 18, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29862239/a-technique-of-hand-digit-reconstruction-using-scarred-and-deformed-donor-segments
#14
Nikolay M Alexandrov, Michail G Volovik, Denis V Kiselev, Sergey V Petrov
Background: Hand digit reconstruction with transposition of hand segments in cases of hand injury is not used frequently by surgeons, at least in part because of potential ischemic complications after cicatricial changes in tissues. The aim of this study was to investigate the opportunities for expanding the set of indications for hand digit reconstruction using scarred and deformed donor segments. Methods: We developed a technique of ischemic preconditioning and preforming the segment before transfer to improve macro-circulation and micro-circulation in scarred donor segments with a view to preventing ischemic complications in reconstructed digits...
April 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29860552/accessory-liver-within-the-thoracic-cavity
#15
REVIEW
Mehmet Emin Adin, Mehmet Guli Çetinçakmak, Muhammed Akif Deniz, Cemil Göya
Ectopic intrathoracic liver tissue is extremely rare. Studies are mainly limited to case reports. In the vast majority of reported cases, a diagnosis of intrathoracic liver tissue was made either after a thoracic surgery or during a postmortem examination. However, once included in differential diagnosis, surgical intervention or biopsy procedures may be avoided with optimal diagnostic approach. In the present study, we conducted a literature review and proposed a new classification method for accessory liver within the thoracic cavity...
June 2, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29858961/the-relationships-between-the-pulsatile-flow-form-of-ocular-microcirculation-by-laser-speckle-flowgraphy-and-the-left-ventricular-end-diastolic-pressure-and-mass
#16
Tomoaki Shiba, Mao Takahashi, Chieko Shiba, Tadashi Matsumoto, Yuichi Hori
To evaluate the relationships between parameters of the pulsatile flow form in the optic nerve head shown by laser speckle flowgraphy (LSFG) and the left ventricular (LV) end-diastolic pressure and mass obtained by echocardiography. We cross sectional analyzed the cases of 175 subjects who had undergone polysomnography. Standard M-mode two-dimensional color Doppler imaging was performed to evaluate the E/e' ratio (which represents the LV end-diastolic pressure) and LV mass. The pulsatile flow form analysis parameters of the blowout score and acceleration time index were evaluated...
June 1, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29847841/vascular-permeability-and-remodelling-coincide-with-inflammatory-and-reparative-processes-after-joint-bleeding-in-factor-viii-deficient-mice
#17
Esther J Cooke, Jenny Y Zhou, Tine Wyseure, Shweta Joshi, Vikas Bhat, Donald L Durden, Laurent O Mosnier, Annette von Drygalski
Vascular remodelling is a prominent feature of haemophilic arthropathy (HA) that may underlie re-bleeding, yet the nature of vascular changes and underlying mechanisms remain largely unknown. Here, we aimed to characterize synovial vascular remodelling and vessel integrity after haemarthrosis, as well as temporal changes in inflammatory and tissue-reparative pathways. Thirty acutely painful joints in patients with haemophilia (PWH) were imaged by musculoskeletal ultrasound with Power Doppler (MSKUS/PD) to detect vascular abnormalities and bloody effusions...
June 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29846327/regression-of-organ-damage-following-renal-denervation-in-resistant-hypertension-a-meta-analysis
#18
Athanasios Kordalis, Dimitrios Tsiachris, Panagiota Pietri, Costas Tsioufis, Christodoulos Stefanadis
AIMS: Prospective observational studies have suggested that renal denervation (RDN) is associated with target organ damage (TOD) regression. Our aim is to review and meta-analyze the available evidence for the effect of RDN on TOD. METHODS: We searched literature for studies with eligible content and performed random-effect meta-analyses for the following outcomes: left ventricular mass index (LVMI), left atrial volume index (LAVI), E to A wave velocities of trans-mitral inflow (E/A) and E wave velocity to Em velocity from tissue Doppler imaging (E/Em), central augmentation index (AIx) and carotid-femoral pulse wave velocity (PWV)...
May 24, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29844942/cesarean-scar-pregnancy-a-new-challenge-for-obstetricians
#19
REVIEW
Piotr Pędraszewski, Edyta Wlaźlak, Wojciech Panek, Grzegorz Surkont
Diagnosis and treatment of ectopic cesarean scar pregnancy has become a challenge for contemporary obstetrics. With an increase in the number of pregnancies concluded with a cesarean section and with the development of transvaginal ultrasonography, the frequency of cesarean scar pregnancy diagnoses has increased as well. The aim of the study is to evaluate various diagnostic methods (ultrasonography in particular) and analyze effective treatment methods for cesarean scar pregnancy. An ultrasound scan, Doppler examination and magnetic resonance imaging are all useful in early detection of asymptomatic cesarean scar pregnancy, thus enabling effective treatment and preservation of fertility...
March 2018: Journal of Ultrasonography
https://www.readbyqxmd.com/read/29806376/-progress-of-monitoring-methods-and-preventions-of-disorder-of-blood-supplying-of-expanded-flaps
#20
REVIEW
Yanxian Lin, Weiming Song
Objective: To summarize the monitoring methods and preventions of the disorder of blood supplying of expanded flaps, so as to provide some references for improving the survival of expanded flaps. Methods: The domestic and abroad related literature about the disorder of blood supplying of expanded flaps was reviewed and analyzed. Results: Handheld Doppler, digital subtraction angiography, computer tomographic angiography, magnetic resonance angiography, and fluorescein angiography can be used as reliable preoperative imaging methods in designing expanded flaps with rich blood supply...
January 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
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