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https://www.readbyqxmd.com/read/28214989/exposure-response-analyses-of-blood-pressure-and-heart-rate-changes-for-methylphenidate-in-healthy-adults
#1
Liang Li, Yaning Wang, Ramana S Uppoor, Mehul U Mehta, Tiffany Farchione, Mitchell V Mathis, Hao Zhu
The aim of the study was to evaluate the exposure-response (E-R) relationships of blood pressure (BP) and heart rate (HR) changes in healthy adults taking methylphenidate (MPH). Intensive time profiles of BP and HR from healthy adults in placebo and MPH treatment arms of seven clinical trials from the FDA internal database were utilized for this analysis. The analysis model contains a circadian component for placebo effect and an E-R component to describe drug effect. Internal validation was performed using goodness-of-fit plots and visual predictive check...
February 18, 2017: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/28213312/multiple-myocardial-abscesses-secondary-to-late-stent-infection
#2
Ayman Elbadawi, Marwan Saad, Islam Y Elgendy, Aniqa Zafar, Ming-Yan Chow
A 53-year-old woman presented to our hospital with dizziness and low-grade fever. She underwent percutaneous coronary intervention to the obtuse marginal artery with a drug-eluting stent 20 months prior to this presentation. Physical examination was remarkable for bradycardia. Electrocardiogram showed a junctional rhythm with heart rate of 35 bpm. Blood and urine cultures were negative. Despite successful urgent pacemaker placement, she had cardiac arrest the following day with unsuccessful cardiopulmonary resuscitation attempt...
February 2, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28211133/an-unusual-short-rp-tachycardia-what-is-the-mechanism
#3
Joshua Balog
A 68-year-old man with a history of a structurally normal heart by echocardiography, an unsuccessful ablation of a narrow complex tachycardia and frequent symptoms of palpitations presents for an electrophysiology study and ablation. Baseline 12-lead EKG demonstrated sinus rhythm without ventricular preexcitation. This article is protected by copyright. All rights reserved.
February 17, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28210637/anomalous-origin-of-the-left-coronary-artery-from-the-pulmonary-artery-an-uncommon-coronary-anomaly-with-serious-implications-in-adulthood
#4
Venkat Gangadharan, Kamesh Sivagnanam, Ghulam Murtaza, Michael Ponders, Otto Teixeira, Timir Paul
A 36-year-old woman was seen with complaints of exertional chest pain and shortness of breath. Her medical history included atrial fibrillation and diabetes. Physical examination was unremarkable except for an irregular cardiac rhythm. Myocardial perfusion imaging revealed the presence of a large area of infarction involving the entire anterior and apical walls and part of the anteroseptal wall with minimal periinfarct ischemia. Computed tomography coronary angiogram revealed an anomalous left main coronary artery arising from the main pulmonary artery...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28208969/acute-presentation-of-juvenile-dermatomyositis-with-subclinical-cardiac-involvement-a-rare-case
#5
Rhythm Khera, Shrayash Khare, Shailendra Kumar Singh
Cardiac involvements are common in patients with Dermatomyositis, most of which are not severe enough to present definite or readily observable symptoms. However, Cardiovascular (CVS) manifestations constitute a major cause of death in these patients. The most frequently reported clinically evident of CVS manifestations in-patient of dermatomyositis are Congestive Heart Failure (CHF), conduction aberrations, that may predispose to complete heart block and coronary artery disease. The principal pathophysiological mechanisms that may produce these cardiac manifestations involve coronary artery disease as well as small vessels vasculitis of the myocardium...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208678/novel-fingertip-image-based-heart-rate-detection-methods-for-a-smartphone
#6
Rifat Zaman, Chae Ho Cho, Konrad Hartmann-Vaccarezza, Tra Nguyen Phan, Gwonchan Yoon, Jo Woon Chong
We hypothesize that our smartphone-based fingertip image-based heart rate detection methods reliably detect the heart rhythm and rate of subjects. We propose fingertip curve line movement-based and fingertip image intensity-based detection methods, which both use the movement of successive fingertip images obtained from smartphone cameras. To investigate the performance of the proposed methods, heart rhythm and rate of the proposed methods are compared to those of the conventional method, which is based on average image pixel intensity...
February 12, 2017: Sensors
https://www.readbyqxmd.com/read/28204915/-acute-chest-pain-and-new-ecg-changes-in-pacemaker-patients-a%C3%A2-clinical-challenge
#7
Matthias Hoyme, Ralf Surber, P Christian Schulze, Dirk Prochnau
We report the case of a 82-year-old woman who was admitted to our institution with acute chest pain, nausea, and vomiting. Because of atrial fibrillation with intermittent bradycardia, a single-chamber pacemaker was implanted 4 years ago. The initial 12-lead ECG showed atrial fibrillation with a heart rate of 70 bpm, narrow QRS, and T‑wave inversions in the inferolateral leads. Coronary artery disease was excluded by immediate cardiac catheterization. A subsequent ECG three hours later showed a ventricular paced rhythm...
February 15, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28202420/out-of-hospital-cardiac-arrest-ohca-attended-by-mobile-emergency-teams-with-a-physician-on-board-results-of-the-spanish-ohca-registry-oshcar
#8
Fernando Rosell-Ortiz, José M Navalpotro-Pascual, Patricia Fernández Del Valle, Luis Sánchez-Santos, Xavier Escalada-Roig, Alfredo Echarri-Sucunza, José M Adsuar-Quesada, Isabel Ceniceros-Rozalén, José I Ruiz-Azpiazu, Karlos Ibarguren-Olalde, Nuria López-Cabeza, María V Mier-Ruiz, Enrique Martín-Sánchez, Marta Martínez Del Valle, Guadalupe Inza-Muñoz, Juan A Cordero Torres, María J García-Ochoa, José A Cortés-Ramas, Raúl Canabal-Berlanga, Rafael Zoyo López-Navarro, Juan B López-Messa, Javier García Del Águila, Daniel Alonso-Moreno, Carmen Pozo-Pérez, José Bravo-Castello, Natividad Ramos-García, Ignacio Gómez-Larrosa, Francisco J Mellado-Vergel
: Most survival outcomes in out-of-hospital cardiac arrest (OHCA) are provided by emergency medical services (EMS) without a doctor on board. Our objective was to determine such outcomes in a whole country with public physician-led EMS. METHODS: We analyzed data from a nationwide prospective registry of OHCA cases attended by emergency medical teams (EMS) of 19 Public EMS in Spain, covering the period from 1 October 2013 to 30-October 2014 (13 months). RESULTS: Advanced life support (ALS) was initiated in 9347 cases (incidence of 18...
February 12, 2017: Resuscitation
https://www.readbyqxmd.com/read/28202258/sudden-cardiac-death-and-coronary-disease-in-the-young-a-nationwide-cohort-study-in-denmark
#9
Sára Zachariasardóttir, Bjarke Risgaard, Frederik Nybye Ågesen, Reza Jabbari, Charlotte Glinge, Ole Ingemann-Hansen, Gyda Lolk Ottesen, Jørgen Lange Thomsen, Stig Haunsø, Jytte Banner, Bo Gregers Winkel, Jacob Tfelt-Hansen
BACKGROUND: Sudden cardiac death caused by coronary artery disease (CAD-SCD) is the most frequent cause of SCD in persons <50years. The aim of this study was to examine differences in clinical characteristics and autopsy findings of the heart among 18-35 and 36-49year old CAD-SCD cases. METHODS: We have previously identified all sudden cardiac deaths in Denmark through review of death certificates and autopsy reports including all deaths between 2000 and 2006 in individuals aged 18-35years and all deaths between 2007 and 2009 in individuals aged 18-49years...
January 28, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28197356/acute-pseudoischemic-ecg-abnormalities-after-right-pneumonectomy
#10
Nada Vasic, Sanja Dimic-Janjic, Ruza Stevic, Branislava Milenkovic, Verica Djukanovic
New onset of electrocardiographic (ECG) abnormalities can occur after lung surgery due to the changes in the position of structures and organs in the chest cavity. The most common heart rhythm disorder is atrial fibrillation. So-called "pseudoischemic" ECG changes that mimic classic ECG signs of acute myocardial ischemia are also often noticed. We report the case of a 68-year-old male, with no prior cardiovascular disease, who underwent extensive surgical resection for lung cancer. On a second postoperative day, clinical and electrocardiographic signs of acute myocardial ischemia occurred...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28193738/incidence-and-survival-after-in-hospital-cardiopulmonary-resuscitation-in-nonelderly-adults-us-experience-2007-to-2012
#11
Sagar Mallikethi-Reddy, Alexandros Briasoulis, Emmanuel Akintoye, Kavyashri Jagadeesh, Robert D Brook, Melvyn Rubenfire, Luis Afonso, Cindy L Grines
BACKGROUND: Survival trends after in-hospital cardiopulmonary resuscitation (ICPR) for cardiac arrest in nonelderly adults is not well known. Influence of cardiopulmonary resuscitation guidelines on nationwide survival after ICPR is yet to be well elucidated. METHODS AND RESULTS: We examined survival trends and factors associated with survival after ICPR in nonelderly adults aged 18 to 64 years, using Healthcare Utilization Project Nationwide Inpatient Sample Database from 2007 through 2012 in the United States...
February 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28188451/patients-with-cheyne-stokes-respiration-and-heart-failure-patient-tolerance-after-three-month-discontinuation-of-treatment-with-adaptive-servo-ventilation
#12
Arild Hetland, Tøri Vigeland Lerum, Kristina H Haugaa, Thor Edvardsen
The recent SERVE HF study concluded that patients with chronic heart failure (CHF) and Cheyne-Stokes respiration (CSR) have increased mortality when treated with adaptive servo-ventilation (ASV). We, therefore, wanted to explore if these patients tolerated discontinuation of ASV treatment. The study was a prospective post-ASV treatment observational design with a 3-month follow-up period. 14 patients from our outpatient clinic, all male, were originally diagnosed with CHF and Cheyne-Stokes respiration, which is a clinical form of central sleep apnea...
February 11, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28184977/lateral-atrial-tunnel-fontan-operation-predisposes-to-the-junctional-rhythm
#13
Katarzyna Januszewska, Anna Schuh, Anja Lehner, Robert Dalla-Pozza, Edward Malec
The goal of the study was to compare the early postoperative course after fenestrated lateral atrial tunnel (LT) and non-fenestrated extracardiac conduit (EC) Fontan operation (FO) in a single center where both techniques were parallelly used. Between 2004 and 2012, 56(32.7%) children underwent LT and 113(66.1%) EC FO. The mean age was 3.7 ± 2.9 years and mean weight was 14.6 ± 7.3 kg. The most common malformation was hypoplastic left heart syndrome (50.9%). The general approach was to perform LT in children after hemi-Fontan operation and EC in patients after Glenn anastomosis...
February 10, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28184260/perioperative-management-of-left-ventricular-diastolic-dysfunction-and-heart-failure-an-anesthesiologist-s-perspective
#14
REVIEW
Taeha Ryu, Seok-Young Song
Anesthesiologists frequently see asymptomatic patients with diastolic dysfunction or heart failure for various surgeries. These patients typically show normal systolic function but abnormal diastolic parameters in their preoperative echocardiographic evaluations. The symptoms that are sometimes seen are similar to those of chronic obstructive pulmonary disease. Patients with diastolic dysfunction, and even with diastolic heart failure, have the potential to develop a hypertensive crisis or pulmonary congestion...
February 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28179971/atypical-double-right-coronary-artery-presenting-with-acute-coronary-syndrome-cardiogenic-shock-and-complete-heart-block
#15
Santosh Kumar Sinha, Shravan Singh, Vikash Chaturvedi, Puneet Agrawal, Mahmadula Razi, Anupam Mahrotra, Vikas Mishra, Mukesh Kumar, Nasar Abdali, Dibbendhu Khanra, Ramesh Thakur, Chandra Mohan Varma, Umeshwar Pandey
Double right coronary artery (RCA) is an extremely rare coronary artery anomaly. We here report an atherosclerotic double RCA which appeared after primary percutaneous intervention performed to treat a 34-year-old male presenting with acute inferior myocardial infarction, cardiogenic shock and complete heart block. This is an unusual case as double RCA had been hidden by total atherosclerotic occlusion of the proximal part of the RCA and complete restoration of patency led complete heart block back to normal sinus rhythm...
March 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28177123/katp-channel-inhibition-blunts-electromechanical-decline-during-hypoxia-in-left-ventricular-working-rabbit-hearts
#16
Kara Garrott, Sarah Kuzmiak-Glancy, Anastasia Wengrowski, Hanyu Zhang, Jack Rogers, Matthew Kay
Sarcolemmal KATP channel activation in isolated cells is generally understood, yet the relationship between myocardial oxygenation and KATP activation in excised working rabbit hearts remains unknown. We optically mapped action potentials (APs) in excised rabbit hearts to test the hypothesis that hypoxic changes would be more severe in LV working hearts (LWHs) than Langendorff (LANG) perfused hearts. We further hypothesized that KATP inhibition would prevent those changes. Optical APs were mapped while measuring LV developed pressure (LVDP), coronary flow rate (CFR), and oxygen consumption (MVO2 ) in LANG and LWHs...
February 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28175283/european-heart-rhythm-association-ehra-european-association-of-cardiovascular-prevention-and-rehabilitation-eacpr-position-paper-on-how-to-prevent-atrial-fibrillation-endorsed-by-the-heart-rhythm-society-hrs-and-asia-pacific-heart-rhythm-society-aphrs
#17
Bulent Gorenek, Antonio Pelliccia, Emelia J Benjamin, Giuseppe Boriani, Harry J Crijns, Richard I Fogel, Isabelle C Van Gelder, Martin Halle, Gulmira Kudaiberdieva, Deirdre A Lane, Torben Bjerregaard Larsen, Gregory Y H Lip, Maja-Lisa Løchen, Francisco Marín, Josef Niebauer, Prashanthan Sanders, Lale Tokgozoglu, Marc A Vos, David R Van Wagoner, Laurent Fauchier, Irina Savelieva, Andreas Goette, Stefan Agewall, Chern-En Chiang, Márcio Figueiredo, Martin Stiles, Timm Dickfeld, Kristen Patton, Massimo Piepoli, Ugo Corra, Pedro Manuel Marques-Vidal, Pompilio Faggiano, Jean-Paul Schmid, Ana Abreu
No abstract text is available yet for this article.
February 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28174175/association-of-implementation-of-practice-standards-for-electrocardiographic-monitoring-with-nurses-knowledge-quality-of-care-and-patient-outcomes-findings-from-the-practical-use-of-the-latest-standards-of-electrocardiography-pulse-trial
#18
Marjorie Funk, Kristopher P Fennie, Kimberly E Stephens, Jeanine L May, Catherine G Winkler, Barbara J Drew
BACKGROUND: Although continuous electrocardiographic (ECG) monitoring is ubiquitous in hospitals, monitoring practices are inconsistent. We evaluated implementation of American Heart Association practice standards for ECG monitoring on nurses' knowledge, quality of care, and patient outcomes. METHODS AND RESULTS: The PULSE (Practical Use of the Latest Standards of Electrocardiography) Trial was a 6-year multisite randomized clinical trial with crossover that took place in 65 cardiac units in 17 hospitals...
February 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28169950/update-about-atrial-fibrillation-genetics
#19
Alexandra Pérez-Serra, Oscar Campuzano, Ramon Brugada
PURPOSE OF REVIEW: Atrial fibrillation is an important cause of morbidity in the aging population. The mechanisms responsible for the triggering and maintenance of the chaotic atrial rhythm are still poorly understood. In this review, we will focus on the genetic aspects of atrial fibrillation, to understand causality, with special emphasis on recent studies published in the field. RECENT FINDINGS: Diseases such as hypertension, valvular heart disease, and heart failure may induce atrial fibrillation, which increases the risk of stroke and sudden cardiac death...
February 4, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28168870/annotation-of-functional-impact-of-voltage-gated-sodium-channel-mutations
#20
Valérie Hinard, Aurore Britan, Mathieu Schaeffer, Monique Zahn-Zabal, Urs Thomet, Jean-Sébastien Rougier, Amos Bairoch, Hugues Abriel, Pascale Gaudet
Voltage-gated sodium channels are pore-forming transmembrane proteins that selectively allow sodium ions to flow across the plasma membrane according to the electro-chemical gradient thus mediating the rising phase of action potentials in excitable cells and playing key roles in physiological processes such as neurotransmission, skeletal muscle contraction, heart rhythm and pain sensation. Genetic variations in the nine human genes encoding these channels are known to cause a large range of diseases affecting the nervous and cardiac systems...
February 7, 2017: Human Mutation
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