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https://www.readbyqxmd.com/read/28092203/machine-learning-of-three-dimensional-right-ventricular-motion-enables-outcome-prediction-in-pulmonary-hypertension-a-cardiac-mr-imaging-study
#1
Timothy J W Dawes, Antonio de Marvao, Wenzhe Shi, Tristan Fletcher, Geoffrey M J Watson, John Wharton, Christopher J Rhodes, Luke S G E Howard, J Simon R Gibbs, Daniel Rueckert, Stuart A Cook, Martin R Wilkins, Declan P O'Regan
Purpose To determine if patient survival and mechanisms of right ventricular failure in pulmonary hypertension could be predicted by using supervised machine learning of three-dimensional patterns of systolic cardiac motion. Materials and Methods The study was approved by a research ethics committee, and participants gave written informed consent. Two hundred fifty-six patients (143 women; mean age ± standard deviation, 63 years ± 17) with newly diagnosed pulmonary hypertension underwent cardiac magnetic resonance (MR) imaging, right-sided heart catheterization, and 6-minute walk testing with a median follow-up of 4...
January 16, 2017: Radiology
https://www.readbyqxmd.com/read/28090294/the-effects-of-pulmonary-vasodilating-agents-on-right-ventricular-parameters-in-severe-group-3-pulmonary-hypertension-a-pilot-study
#2
Takahiro Sato, Ichizo Tsujino, Ayako Sugimoto, Toshitaka Nakaya, Taku Watanabe, Hiroshi Ohira, Masaru Suzuki, Satoshi Konno, Noriko Oyama-Manabe, Masaharu Nishimura
Pulmonary arterial hypertension (PAH)-approved vasodilators improve right ventricular (RV) function in patients with PAH. However, whether PAH-approved drugs ameliorate RV morphology and function in lung disease-associated pulmonary hypertension (lung-PH) remains unclear. We aimed to prospectively evaluate the changes in RV volume and ejection fraction (RVEF) in 14 consecutive severe lung-PH patients treated with PAH-approved vasodilators. Severe lung-PH was defined as a mean pulmonary arterial pressure (MPAP) of ≥35 mmHg or an MPAP of ≥25 mmHg with a cardiac index (L/min/m(2)) of <2...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28090291/macrophage-migration-inhibitory-factor-as-a-novel-biomarker-of-portopulmonary-hypertension
#3
Hilary M DuBrock, Josanna M Rodriguez-Lopez, Barbara L LeVarge, Michael P Curry, Paul A VanderLaan, Zsuzsanna K Zsengeller, Elizabeth Pernicone, Ioana R Preston, Paul B Yu, Ivana Nikolic, Dihua Xu, Ravi I Thadhani, Richard N Channick, S Ananth Karumanchi
Portopulmonary hypertension (POPH) is a poorly understood complication of liver disease associated with significant morbidity and mortality. We sought to identify novel biomarkers of POPH disease presence and severity. We performed a prospective, multicenter, case-control study involving patients with liver disease undergoing right heart catheterization. POPH cases were defined as a mean pulmonary arterial pressure (mPAP) ≥25 mmHg and pulmonary vascular resistance (PVR) >240 dynes˙s˙cm(-5). Plasma samples were collected from the systemic and pulmonary circulation, and antibody microarray was used to identify biomarkers...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28090047/platypnea-orthodeoxia-syndrome-in-a-patient-with-an-atrial-septal-defect-the-diagnosis-and-choice-of-treatment
#4
Shuichiro Kazawa, Takashi Enomoto, Naomasa Suzuki, Tomoyasu Koshikawa, Yuka Okubo, Shinpei Yoshii, Masahito Sato, Masaaki Okabe, Akira Yamashina, Yoshifusa Aizawa
A 77-year-old woman developed dyspnea over three years which occurred during sitting, standing or walking. Her physical examination, chest X-ray, ECG and cardiac catheterization results were all normal. A marked fall in arterial oxygen saturation was observed on sitting or standing. Transesophageal echocardiography showed an increase of right to left shunt flow on sitting. The patient was diagnosed with platypnea-orthodeoxia syndrome and underwent the surgical closure of an atrial septal defect of 19 mm in diameter...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28089778/image-noise-reduction-technology-reduces-radiation-in-a-radial-first-cardiac-catheterization-laboratory
#5
Ateka Gunja, Yagya Pandey, Hui Xie, Beata M Wolska, Adhir R Shroff, Amer K Ardati, Mladen I Vidovich
BACKGROUND: Transradial coronary angiography (TRA) has been associated with increased radiation doses. We hypothesized that contemporary image noise reduction technology would reduce radiation doses in the cardiac catheterization laboratory in a typical clinical setting. METHODS AND RESULTS: We performed a single-center, retrospective analysis of 400 consecutive patients who underwent diagnostic and interventional cardiac catheterizations in a predominantly TRA laboratory with traditional fluoroscopy (N=200) and a new image noise reduction fluoroscopy system (N=200)...
December 27, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28081162/beyond-pressure-gradients-the-effects-of-intervention-on-heart-power-in-aortic-coarctation
#6
Joao Filipe Fernandes, Leonid Goubergrits, Jan Brüning, Florian Hellmeier, Sarah Nordmeyer, Tiago Ferreira da Silva, Stephan Schubert, Felix Berger, Titus Kuehne, Marcus Kelm
BACKGROUND: In aortic coarctation, current guidelines recommend reducing pressure gradients that exceed given thresholds. From a physiological standpoint this should ideally improve the energy expenditure of the heart and thus prevent long term organ damage. OBJECTIVES: The aim was to assess the effects of interventional treatment on external and internal heart power (EHP, IHP) in patients with aortic coarctation and to explore the correlation of these parameters to pressure gradients obtained from heart catheterization...
2017: PloS One
https://www.readbyqxmd.com/read/28081128/radiation-exposure-from-diagnostic-imaging-in-a-cohort-of-pediatric-transplant-recipients
#7
Alexandra Seal, Michael Hawkes, Ravi Bhargava, Michelle Noga, Jutta Preiksaitis, Curtis Mabilangan, Joan Robinson
Recipients of solid organ transplants (SOT) have extensive diagnostic imaging (DI). The purpose of this study was to quantify this exposure. Children from northern Alberta with SOTs at Stollery Children's Hospital, Edmonton, Alberta January 1, 2006, to July 31, 2012, were included. Effective doses of radiation were estimated using published norms for DI performed post-transplant up to October 16, 2014. The 54 eligible children had 6215 DI studies (5628 plain films, 293 computerized tomography (CT) scans, 149 positron emission topography (PET) -CT scans, 47 nuclear medicine scans and 98 cardiac catheterizations)...
2017: PloS One
https://www.readbyqxmd.com/read/28064364/significance-of-right-atrial-tension-for-the-development-of-complications-in-patients-after-atriopulmonary-connection-fontan-procedure-potential-indicator-for-fontan-conversion
#8
Gaku Izumi, Hideaki Senzaki, Atsuhito Takeda, Hirokuni Yamazawa, Kohta Takei, Takuo Furukawa, Kei Inai, Tokuko Shinohara, Toshio Nakanishi
Elevated right atrial (RA) pressure and progressive RA dilation are thought to play pivotal roles in the development of late complications after atriopulmonary connection (APC) Fontan surgery. However, no clear cut-off value for RA pressure or RA volume has been determined for stratifying the risk of developing Fontan complications. We hypothesized that RA tension, which incorporates information about both RA pressure and volume, might help predict the risk of developing complications. We retrospectively studied 51 consecutive APC Fontan patients (median postoperative period 14 years)...
January 7, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28063854/hospital-admissions-for-chest-pain-associated-with-cocaine-use-in-the-united-states
#9
Vikas Singh, Alex P Rodriguez, Badal Thakkar, Ghamshyambhai R Savani, Nileshkumar J Patel, Apurva O Badheka, Mauricio G Cohen, Carlos E Alfonso, Raul D Mitrani, Juan Viles-Gonzalez, Jeffrey J Goldberger
BACKGROUND: The outcomes related to chest pain associated with cocaine use and its burden on healthcare system are not well studied. METHODS: Data were collected from the Nationwide Inpatient Sample (2001 - 2012). Subjects were identified by using the ICD-9-CM codes. Primary outcome was a composite of mortality, myocardial infarction, stroke and cardiac arrest. RESULTS: We identified 363,143 admissions for cocaine induced chest pain. Mean age was 44...
January 4, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28062267/constrictive-pericarditis-a-practical-clinical-approach
#10
REVIEW
William R Miranda, Jae K Oh
Constrictive pericarditis (CP) represents a form of severe diastolic heart failure (HF), secondary to a noncompliant pericardium. The true prevalence of CP is unknown but it is observed in 0.2-0.4% of patients who have undergone cardiac surgery or have had pericardial trauma or inflammation due to a variety of etiologies. Despite its poor prognosis if untreated, CP is a potentially curable disease and surgical pericardiectomy can now be performed at low perioperative mortality in tertiary centers with surgical expertise in pericardial diseases...
January 3, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28054182/takotsubo-cardiomyopathy-fdg-myocardial-uptake-pattern-in-fasting-patients-comparison-of-pet-ct-spect-and-echo-results
#11
Malgorzata Kobylecka, Monika Budnik, Janusz Kochanowski, Radoslaw Piatkowski, Marek Chojnowski, Katarzyna Fronczewska-Wieniawska, Tomasz Mazurek, Joanna Maczewska, Michał Peller, Grzegorz Opolski, Leszek Krolicki
BACKGROUND: The aim of this study was to assess the accumulation pattern of 18F-FDG in fasting patients with takotsubo cardiomyopathy (TTC) and to correlate the results with perfusion scintigraphy and echocardiography. METHODS: 18 consecutive patients with TTC were identified by clinical symptoms, cardiac catheterization, and echocardiography. Coronary angiography (CA) and transthoracic echocardiography (TTE) were performed on the day of the onset of symptoms. An assessment of myocardial perfusion (99mTc-MIBI) and glucose metabolism (18F-FDG) was performed within 18 days...
January 4, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28052583/pulmonary-hypertension-in-advanced-lung-diseases-echocardiography-as-an-important-part-of-patient-evaluation-for-lung-transplantation
#12
Jolanta Nowak, Bartosz Hudzik, Dariusz Jastrze Bski, Jacek T Niedziela, Piotr Rozentryt, Jacek Wojarski, Marek Ochman, Wojciech Karolak, Sławomir Żegleń, Marek Gierlotka, Mariusz Gąsior
INTRODUCTION: Pulmonary hypertension (PH) is common complication in advanced lung disease. Echocardiography provides additional information and may be useful to assess PH probability. OBJECTIVES: The usefulness of combination of well-known echocardiographic parameters in detecting PH in patients with advanced lung disease referred for lung transplantation was evaluated. METHODS: The study population consisted of 37 consecutive patients with idiopathic pulmonary fibrosis (IPF), 20 patients with chronic obstructive pulmonary disease (COPD), and 8 patients with other interstitial lung diseases...
January 4, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28052532/persistent-left-superior-vena-cava-accompanying-congenital-heart-disease-in-children-experience-of-a-tertiary-care-center
#13
Mehmet Emre Ari, Vehbi Doğan, Senem Özgür, Özben Ceylan, İlker Ertuğrul, Şeyma Kayalı, Tamer Yoldaş, Utku Arman Örün, Özkan Kaya, Selmin Karademir
BACKGROUND: This study focuses on determining concomitant persistent left superior vena cava (SVC) in patients with congenital heart disease (CHD). METHODS: Between 2005 and 2012, a total of 2.663 patients with CHD, 88 (3.3%) of whom were diagnosed with persistent left SVC, were evaluated retrospectively. The demographic characteristics of patients, clinical and radiographic findings, echocardiography, cardiac catheterization, and angiography results obtained from the patients' records were reviewed...
January 3, 2017: Echocardiography
https://www.readbyqxmd.com/read/28048767/su-f-i-77-radiation-dose-in-cardiac-catheterization-procedures-impact-of-a-systematic-reduction-in-pulsed-fluoroscopy-frame-rate
#14
C Schultz, S Dixon
PURPOSE: To evaluate whether one small systematic reduction in fluoroscopy frame rate has a significant effect on the total air kerma and/or dose area product for diagnostic and interventional cardiac catheterization procedures. METHODS: The default fluoroscopy frame rate (FFR) was lowered from 15 to 10 fps in 5 Siemens™ Axiom Artis cardiac catheterization labs (CCL) on July 1, 2013. A total of 7212 consecutive diagnostic and interventional CCL procedures were divided into two study groups: 3602 procedures from 10/1/12 -6/30/13 with FFR of 15 fps; and 3610 procedures 7/1/13 - 3/31/14 at 10 fps...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045419/successful-percutaneous-removal-of-broken-umbilical-vein-catheter-in-a-very-low-birth-weight-preterm-infant
#15
Atalay Demirel, Gülşah Güven, Füsun Okan, Arda Saygılı
A 28-week-old preterm infant with a birth weight of 1250 g had a broken segment of umbilical vein catheter (UVC) lodged in the right atrium. It was observed that a 7-cm fragment of catheter had migrated to the right atrium through the inferior vena cava. The catheter was successfully retrieved by fluoroscopically guided percutaneous cardiac catheterization, using a cobra catheter and snare wire, without complication. Fracture and embolization of UVC is a rare but serious complication. Presently described was a case of fractured and embolized UVC in a very low-birth-weight preterm infant, and its successful retrieval via percutaneous endovascular approach...
December 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28043202/sex-specific-cardiopulmonary-exercise-testing-indices-related-to-hemodynamics-in-idiopathic-pulmonary-arterial-hypertension
#16
Ping Yuan, Tian-Xiang Chen, Bigyan Pudasaini, Jie Zhang, Jian Guo, Si-Jin Zhang, Lan Wang, Qin-Hua Zhao, Su-Gang Gong, Rong Jiang, Wen-Hui Wu, Jing He, Jin-Ming Liu, Qing-Hua Hu
BACKGROUND: Many studies have highlighted sex preponderance in idiopathic pulmonary arterial hypertension (IPAH). It is well established that there are differences in exercise capacities in the two sexes but how much of that difference reflects on disease severity or correlates to markers of severity in the two sexes is still not clear. Right heart catheterization (RHC) and cardiopulmonary exercise testing (CPET) have been widely used for assessing functional capacity, prognosis and treatment response in IPAH...
January 1, 2017: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/28041858/combining-clinical-and-angiographic-variables-for-estimating-risk-of-target-lesion-revascularization-after-drug-eluting-stent-placement
#17
Joshua M Stolker, David J Cohen, Kevin F Kennedy, Michael J Pencina, Suzanne V Arnold, Neal S Kleiman, John A Spertus
BACKGROUND: Drug-eluting stents (DES) reduce restenosis but require prolonged antiplatelet therapy, when compared with bare metal stents. Ideally, the patient should be involved in this risk:benefit assessment prior to selecting DES, to maximize the benefits and cost-effectiveness of care, and to improve medication adherence. However, accurate estimation of restenosis risk may require angiographic factors identified at cardiac catheterization. METHODS: In a large PCI registry, we used logistic regression to identify clinical and angiographic predictors of clinically-driven target lesion revascularization (TLR) over the first year after stent placement...
December 18, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28041701/depression-and-chest-pain-in-patients-with-coronary-artery-disease
#18
Salim S Hayek, Yi-An Ko, Mosaab Awad, Andrea Del Mar Soto, Hina Ahmed, Keyur Patel, Michael Yuan, Spencer Maddox, Brandon Gray, Jamal Hajjari, Laurence Sperling, Amit Shah, Viola Vaccarino, Arshed A Quyyumi
BACKGROUND: Depression is common in patients with coronary artery disease (CAD) and is associated with more frequent chest pain. It is however unclear whether this is due to differences in underlying CAD severity. We sought to determine [1] whether depressive symptoms are associated with chest pain independently of CAD severity, [2] whether improvement in depressive symptoms over time is associated with improvement in chest pain and [3] whether the impact of revascularization on chest pain differs between patients with and without depression...
December 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28040287/race-and-contrast-induced-nephropathy-in-patients-undergoing-coronary-angiography-and-cardiac-catheterization
#19
REVIEW
Raveen Chawla, Jeremy Turlington, Pradeep Arora, Ion S Jovin
Contrast-induced nephropathy (CIN) is an acute worsening of renal function after receiving intravascular contrast during a procedure. Some of the predisposing factors include underlying diabetes, chronic kidney disease, congestive heart failure, periprocedural hypotension, anemia, contrast volume, and osmolality of contrast; however, it remains unclear if risk varies for CIN with race and ethnicity. There is evidence in the literature showing the link between race/ethnicity and the discrepancies in the utilization of preventive care services and the resources related to cardiovascular and renal health...
December 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28039229/the-role-of-diastolic-stress-testing-in-the-evaluation-for-hfpef-a-simultaneous-invasive-echocardiographic-study
#20
Masaru Obokata, Garvan C Kane, Yogesh N V Reddy, Thomas P Olson, Vojtech Melenovsky, Barry A Borlaug
BACKGROUND: -Diagnosis of heart failure (HF) with preserved ejection fraction (HFpEF) is challenging and relies largely on demonstration of elevated cardiac filling pressures (pulmonary capillary wedge pressure, PCWP). Current guidelines recommend use of natriuretic peptides (NT-proBNP) and rest/exercise echocardiography (E/e' ratio) to make this determination. Data to support this practice is conflicting. METHODS: -Simultaneous echocardiographic-catheterization studies were prospectively conducted at rest and during exercise in subjects with invasively-proven HFpEF (n=50) and participants with dyspnea but no identifiable cardiac pathology (n=24)...
December 30, 2016: Circulation
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