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cardiac contrast mediums

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https://www.readbyqxmd.com/read/29779758/assessing-venous-thrombus-in-renal-cell-carcinoma-preliminary-results-for-unenhanced-3d-ssfp-mri
#1
L C Adams, B Ralla, G Engel, G Diederichs, B Hamm, J Busch, F Fuller, M R Makowski
AIM: To test the potential of unenhanced cardiac- and respiratory-motion-corrected three-dimensional steady-state free precession (3D-SSFP) magnetic resonance imaging (MRI) for the assessment of inferior vena cava (IVC) thrombus in patients with clear-cell renal cell carcinoma (cRCC), compared to standard contrast-enhanced (CE)-MRI and CE-computed tomography (CT). MATERIALS AND METHODS: Eighteen patients with cRCC and IVC thrombus, who received CE-MRI and 3D-SSFP at 1...
May 17, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29776437/coenzyme-q10-combined-with-trimetazidine-in-the-prevention-of-contrast-induced-nephropathy-in-patients-with-coronary-heart-disease-complicated-with-renal-dysfunction-undergoing-elective-cardiac-catheterization-a-randomized-control-study-and-in-vivo-study
#2
Fei Chen, Fan Liu, Jingchao Lu, Xiuchun Yang, Bing Xiao, Yaqiong Jin, Jie Zhang
BACKGROUND: Contrast-induced nephropathy (CIN) is one of the common hospital-acquired acute renal failures. The purpose of this study was to investigate whether Coenzyme Q10 (CoQ10) and trimetazidine (TMZ) can prevent the occurrence of CIN after elective cardiac catheterization in patients with coronary artery disease complicated with renal dysfunction. METHODS: Consecutive coronary artery disease patients with renal insufficiency scheduled for coronary angiography were enrolled in randomized, paralleled, double-blind, controlled trial...
May 18, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29724974/comparison-of-the-transradial-and-transfemoral-approach-in-treatment-of-chronic-total-occlusions-with-similar-lesion-characteristics
#3
Mustafa Ahmet Huyut, Aylin Hatice Yamaç
OBJECTIVE: There is limited data on the efficacy and the safety of the transradial approach (TRA) for percutaneous coronary intervention (PCI) of chronic total occlusion (CTO), particularly in comparison with the transfemoral approach (TFA) in lesions with similar complexity. METHODS: We included 358 patients, who underwent elective CTO PCI between January 2012 and August 2017 and compared the radial (179 patients) and femoral (179 patients) approaches. The J-CTO score was similar in both groups (TRA, 2...
May 2018: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29718868/iodixanol-versus-iopromide-in-patients-with-renal-insufficiency-undergoing-coronary-angiography-with-or-without-pci
#4
Junyi Zhang, Yufeng Jiang, Qing Rui, Min Chen, Nannan Zhang, Huajia Yang, Yafeng Zhou
BACKGROUND: The use of contrast agents during coronary angiography can result in contrast-induced nephropathy (CIN), particularly in patients with renal dysfunction. On the contrary, different contrast agents can induce different degree of changes in cardiac function. The objective of our meta-analysis was to compare the clinical safety of iso-osmolar contrast medium iodixanol to low-osmolar contrast medium iopromide in patients with renal insufficiency undergoing coronary angiography with or without percutaneous coronary intervention (PCI)...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29670801/nonoperative-management-of-multiple-penetrating-cardiac-and-colon-wounds-from-a-shotgun-a-case-report-and-literature-review
#5
Paula M Jaramillo, Jaime A Montoya, David A Mejia, Salin Pereira Warr
Introduction: Surgery for cardiac trauma is considered fatal and for wounds of the colon by associated sepsis is normally considered; however, conservative management of many traumatic lesions of different injured organs has progressed over the years. Presentation of the Case: A 65-year-old male patient presented with multiple shotgun wounds on the left upper limb, thorax, and abdomen. On evaluation, he was hemodynamically stable with normal sinus rhythm and normal blood pressure, no dyspnea, or abdominal pain...
2018: Case Reports in Surgery
https://www.readbyqxmd.com/read/29657080/right-ventricular-energetics-and-power-in-pulmonary-regurgitation-vs-stenosis-using-four-dimensional-phase-contrast-magnetic-resonance
#6
Joao Filipe Fernandes, James M Hammel, Jia Zhou, Yunbin Xiao, Manuela Chen, Rita Alves, John Lof, Stuart M Grieve, Andreas Schuster, Titus Kuehne, Shelby Kutty
OBJECTIVE: We investigated a full energetic profile of pressure and volume loaded right ventricle (RV) in porcine models by evaluating kinetic energy (KE), stroke power, power output and power loss across pulmonary valves with stenosis (PS) or with regurgitation (PR). METHODS: Fifteen pigs (6 PS and 6 PR, 3 unoperated controls) were studied. Phase-contrast 4D-flow MRI was performed in models of PS and PR at baseline and at 10-12 weeks, in conjunction with cardiac catheterization...
July 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29550315/low-transvalvular-flow-rate-predicts-mortality-in-patients-with-low-gradient-aortic-stenosis-following-aortic-valve-intervention
#7
Anastasia Vamvakidou, Wenying Jin, Oleksandr Danylenko, Navtej Chahal, Rajdeep Khattar, Roxy Senior
OBJECTIVES: This study aimed to assess the value of low transvalvular flow rate (FR) for the prediction of mortality compared with low stroke volume index (SVi) in patients with low-gradient (mean gradient: <40 mm Hg), low aortic valve area (<1 cm2 ) aortic stenosis (AS) following aortic valve intervention. BACKGROUND: Transaortic FR defined as stroke volume/left ventricular ejection time is also a marker of flow; however, no data exist comparing the relative prognostic value of these 2 transvalvular flow markers in patients with low-gradient AS who had undergone valve intervention...
March 9, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29457989/propylthiouracil-induced-anti-neutrophil-cytoplasmic-antibody-associated-vasculitis-mimicking-kawasaki-disease
#8
Yoshihiro Aoki, Katsuhiko Kitazawa, Hironobu Kobayashi
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is rare in children and is characterised as necrotising vasculitis predominantly affecting small and medium-sized vessels. Propylthiouracil (PTU), an antithyroid drug, has been implicated in drug-induced AAV. In contrast, Kawasaki disease (KD) is a common systemic vasculitis, typically observed in children, which affects the medium-sized vessels, including the coronary arteries. An 11-year-old girl who developed AAV while receiving PTU therapy for Graves' disease is described...
February 19, 2018: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/29401306/subaxillary-approach-to-cardiac-electronic-device-implantation-using-a-single-surgical-incision-a-single-centre-experience
#9
Bruna Bolzan, Martina Morosato, Domenico Caponi, Luca Tomasi, Giuseppe Silvestre, Giovanni Morani
OBJECTIVES: Pacemakers and implantable cardioverter defibrillators have become more common in younger individuals, owing to broader indications and technological advances. Our goal was to report our long-term experience of implanting cardiac devices in young adults via a subaxillary approach with a hidden single incision, to minimize the aesthetic impact of the device. METHODS: From 2003 to 2012, 23 patients underwent cardiac device implantation via a subaxillary approach while they were under general anaesthesia...
February 1, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29164584/cardiac-magnetic-resonance-in-systemic-sclerosis-patients-with-cardiac-symptoms
#10
A Meduri, D V Di Molfetta, L Natale, R Manfredi
OBJECTIVE: Systemic sclerosis (SSc) is characterized by widespread vascular lesions and skin and internal organs fibrosis, including the heart; all cardiac layers, endocardium, myocardium, and pericardium, may be involved. We report the relevance of cardiac MRI findings in scleroderma patients with cardiac symptoms. PATIENTS AND METHODS: 50 patients, all fulfilling the ACR SSc criteria (19 with limited and 31 with diffused skin involvement) were evaluated using a 1...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29089579/transfemoral-transcatheter-aortic-valve-implantation-in-patients-with-end-stage-renal-disease-and-kidney-transplant-recipients
#11
Fadi Al-Rashid, Anja Bienholz, Heike Annelie Hildebrandt, Polycarpos-Christos Patsalis, Matthias Totzeck, Andreas Kribben, Daniel Wendt, Heinz Jakob, Alexander Lind, Rolf Alexander Jánosi, Tienush Rassaf, Philipp Kahlert
Transcatheter aortic valve implantation (TAVI) has evolved to a treatment of choice in high-risk patients and is therefore ideal for patients with advanced chronic kidney disease, as patients with end-stage renal disease and kidney transplant recipients. Especially, outcome of this special patient group is very important. 22 patients with chronic kidney disease stage 5 undergoing intermittent hemodialysis treatment (CKD 5D) and 8 kidney transplant recipients (KT) with severe aortic valve stenosis underwent transfemoral TAVI...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29076887/use-of-levosimendan-in-cardiac-surgery-an-update-after-the-levo-cts-cheetah-and-licorn-trials-in-the-light-of-clinical-practice
#12
Fabio Guarracino, Matthias Heringlake, Bernard Cholley, Dominique Bettex, Stefaan Bouchez, Vladimir V Lomivorotov, Angela Rajek, Matti Kivikko, Piero Pollesello
Levosimendan is a calcium sensitizer and adenosine triphosphate-dependent potassium channel opener, which exerts sustained hemodynamic, symptomatic, and organ-protective effects. It is registered for the treatment of acute heart failure, and when inotropic support is considered appropriate. In the past 15 years, levosimendan has been widely used in clinical practice and has also been tested in clinical trials to stabilize at-risk patients undergoing cardiac surgery. Recently, 3 randomized, placebo-controlled, multicenter studies (LICORN, CHEETAH, and LEVO-CTS) have been published reporting on the perioperative use of levosimendan in patients with compromised cardiac ventricular function...
January 2018: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28964139/emergent-dynamics-of-spatio-temporal-chaos-in-a-heterogeneous-excitable-medium
#13
Philip Bittihn, Sebastian Berg, Ulrich Parlitz, Stefan Luther
Self-organized activation patterns in excitable media such as spiral waves and spatio-temporal chaos underlie dangerous cardiac arrhythmias. While the interaction of single spiral waves with different types of heterogeneity has been studied extensively, the effect of heterogeneity on fully developed spatio-temporal chaos remains poorly understood. We investigate how the complexity and stability properties of spatio-temporal chaos in the Bär-Eiswirth model of excitable media depend on the heterogeneity of the underlying medium...
September 2017: Chaos
https://www.readbyqxmd.com/read/28939956/radial-access-protects-from-contrast-media-induced-nephropathy-after-cardiac-catheterization-procedures
#14
Thorsten Feldkamp, Maya Luedemann, Martina E Spehlmann, Sandra Freitag-Wolf, Julia Gaensbacher, Kevin Schulte, Amer Bajrovic, Dieter Hinzmann, Hans-Joerg Hippe, Ulrich Kunzendorf, Norbert Frey, Mark Luedde
OBJECTIVES: To assess, whether cardiac catheterization via radial access prevents contrast-induced nephropathy. BACKGROUND: Contrast-induced nephropathy (CIN) is a major clinical problem which accounts for more than 10% of acute kidney injury cases in hospitalized patients. Protective measures such as the infusion of isotonic saline solution or acetylcysteine have not consistently been proven to prevent acute kidney injury (AKI). However, there is growing evidence that radial access for coronary angiography and coronary intervention is associated with a lower incidence of AKI compared to femoral access...
February 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28901491/mir%C3%A2-21-attenuates-contrast%C3%A2-induced-renal-cell-apoptosis-by-targeting-pdcd4
#15
Kun Wang, Wei-Jie Bei, Yuan-Hui Liu, Hua-Long Li, Shi-Qun Chen, Kai-Yang Lin, Zhi-Ling Zhou, Ji-Yan Chen, Yong Liu, Ning Tan
Contrast medium (CM) is widely used in cardiac catheterization; however, it may induce acute kidney injury or renal failure, although the underlying mechanism remains to be elucidated. MicroRNA‑21 (miR‑21) is involved in renal disease and has been indicated to regulate cellular apoptosis and fibrosis, although its role in CM‑induced renal cell injury is unknown. The present study examined the expression and potential targets of miR‑21 in human renal proximal tubular epithelial (HK‑2) cells following CM treatment...
November 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28809582/iodixanol-versus-iopromide-at-coronary-ct-angiography-lumen-opacification-and-effect-on-heart-rhythm-the-randomized-isocor-trial
#16
RANDOMIZED CONTROLLED TRIAL
Marisa M Lubbers, Marc Kock, André Niezen, Tjebbe Galema, Marcel Kofflard, Tobias Bruning, Henriette S Kooij, Hanneke van Valen, Marcel Dijkshoorn, Ronald Booij, Anthony Padmos, Alain Vogels, Ricardo P J Budde, Koen Nieman
Purpose To show that equal coronary lumen opacification can be achieved with iso- and low-osmolar contrast media when it is injected at the same iodine delivery rate with contemporary cardiac computed tomographic (CT) protocols and to investigate the cardiovascular effect of iso-osmolar contrast media and the image quality achieved. Materials and Methods Institutional review board approval and written informed consent were obtained for the Effect of Iso-osmolar Contrast Medium on Coronary Opacification and Heart Rhythm in Coronary CT Angiography, or IsoCOR, trial...
January 2018: Radiology
https://www.readbyqxmd.com/read/28769566/association-of-left-ventricular-ejection-fraction-with-contrast-induced-nephropathy-and-mortality-following-coronary-angiography-or-intervention-in-patients-with-heart-failure
#17
Kun Wang, Hua-Long Li, Wei-Jie Bei, Xiao-Sheng Guo, Shi-Qun Chen, Sheikh Mohammed Shariful Islam, Ji-Yan Chen, Yong Liu, Ning Tan
BACKGROUND: Left ventricular ejection fraction (LVEF) is the most widely used parameter to evaluate the cardiac function in patients with heart failure (HF). However, the association between LVEF and contrast-induced nephropathy (CIN) is still controversial. Therefore, the aim of this study is to evaluate the association of LVEF with CIN and long-term mortality following coronary angiography (CAG) or intervention in patients with HF. METHODS: We analyzed 1,647 patients with HF (New York Heart Association [NYHA] or Killip class >1) undergoing CAG or intervention, including 207 (12...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28737526/serial-measurements-of-neutrophil-gelatinase-associated-lipocalin-prognostic-value-in-patients-with-st-segment-elevation-myocardial-infarction-treated-with-a-primary-percutaneous-coronary-intervention
#18
Yeong-Min Lim, Jae Youn Moon, Daniel Min, Sang-Hoon Kim, Woo-In Yang, Won-Jang Kim, Jung-Hoon Sung, In Jai Kim, Sang-Wook Lim, Dong-Hun Cha
BACKGROUND: There are no previous data on serial changes in neutrophil gelatinase-associated lipocalin (NGAL) levels in ST-segment elevation myocardial infarction (STEMI) patients before and after a primary percutaneous coronary intervention (pPCI). The aim of the present study was to evaluate the prognostic value of serial NGAL measurements in patients with STEMI treated by pPCI. MATERIALS AND METHODS: We identified 169 STEMI patients who underwent pPCI within 12 h of symptom onset and had plasma NGAL measurements before (pre-NGAL) and 6 h after (post-NGAL) pPCI...
July 21, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28658505/fast-kvp-switching-dual-energy-contrast-enhanced-thorax-and-cardiac-ct-a-phantom-study-on-the-accuracy-of-iodine-concentration-and-effective-atomic-number-measurement
#19
Antonios E Papadakis, John Damilakis
PURPOSE: To assess the effect of vessel diameter and exposure parameters on the estimation accuracy of concentration and effective atomic number (Zeff ) of iodine (I) in contrast-enhanced thorax and cardiac dual-energy CT using a modern fast kVp-switching CT scanner. METHODS: A standard semi-anthropomorphic cardiac CT phantom devised to simulate the human chest at three different body habitus i.e., medium-sized, large-sized, and obese, was scanned using a fast kVp-switching Revolution-GSI GE CT scanner...
June 28, 2017: Medical Physics
https://www.readbyqxmd.com/read/28605926/cystatin-c-but-not-urinary-or-serum-ngal-may-be-associated-with-contrast-induced-nephropathy-after-percutaneous-coronary-invasive-procedures-a-single-center-experience-on-a-limited-number-of-patients
#20
Emanuele Cecchi, Gianfranco Avveduto, Maria Grazia D'Alfonso, Alessandro Terreni, Emma Gelera, Anna Caldini, Cristina Giglioli
OBJECTIVE: This study aimed to test the association of both the baseline values and post-procedural variations of urinary and serum Neutrophil Gelatinase-Associated Lipocalin (NGAL) and Cystatin C (CysC) with contrast induced nephropathy (CIN) occurrence in patients undergoing percutaneous coronary invasive procedures (PCIP), and compare them to serum creatinine and the estimated glomerular filtration rate (eGFR). METHODS: In 43 patients admitted to our Cardiac Step-Down Unit and submitted to PCIP, we measured serum creatinine and eGFR as the standard markers for CIN diagnosis, and compared them to both serum and urinary NGAL as well as serum CysC, assessed before and 4 hours after PCIP...
May 2017: Acta Medica Academica
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