The Prognostic Impact of Pulse Pressure in Acute Heart Failure: Insights from the HEARTS Registry
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Non-Coding Rnas in the Cardiac Action Potential and Their Impact on Arrhythmogenic Cardiac Diseases
Review Non-Coding RNAs in the Cardiac Action Potential and Their Impact on Arrhythmogenic Cardiac Diseases Estefania Lozano-Velasco 1,2 , Amelia Aranega 1,2 and Diego Franco 1,2,* 1 Cardiovascular Development Group, Department of Experimental Biology, University of Jaén, 23071 Jaén, Spain; [email protected] (E.L.-V.); [email protected] (A.A.) 2 Fundación Medina, 18016 Granada, Spain * Correspondence: [email protected] Abstract: Cardiac arrhythmias are prevalent among humans across all age ranges, affecting millions of people worldwide. While cardiac arrhythmias vary widely in their clinical presentation, they possess shared complex electrophysiologic properties at cellular level that have not been fully studied. Over the last decade, our current understanding of the functional roles of non-coding RNAs have progressively increased. microRNAs represent the most studied type of small ncRNAs and it has been demonstrated that miRNAs play essential roles in multiple biological contexts, including normal development and diseases. In this review, we provide a comprehensive analysis of the functional contribution of non-coding RNAs, primarily microRNAs, to the normal configuration of the cardiac action potential, as well as their association to distinct types of arrhythmogenic cardiac diseases. Keywords: cardiac arrhythmia; microRNAs; lncRNAs; cardiac action potential Citation: Lozano-Velasco, E.; Aranega, A.; Franco, D. Non-Coding RNAs in the Cardiac Action Potential 1. The Electrical Components of the Adult Heart and Their Impact on Arrhythmogenic The adult heart is a four-chambered organ that propels oxygenated blood to the entire Cardiac Diseases. Hearts 2021, 2, body. It is composed of atrial and ventricular chambers, each of them with distinct left and 307–330. -
Effect of Isoproterenol, Phenylephrine, and Sodium Nitroprusside on Fundus Pulsations in Healthy Volunteers
British Journal of Ophthalmology 1996; 80: 217-223 217 Effect of isoproterenol, phenylephrine, and sodium nitroprusside on fundus pulsations in Br J Ophthalmol: first published as 10.1136/bjo.80.3.217 on 1 March 1996. Downloaded from healthy volunteers Leopold Schmetterer, Michael Wolzt, Alex Salomon, Alexander Rheinberger, Christian Unfried, Gabriele Zanaschka, Adolf Friedrich Fercher Abstract have not yet been carried out and quantitative Aims/Background-Recently a laser inter- pressure flow relations in human choroidal ferometric method for topical measure- vessels are as yet unknown. Linear choroidal ment of fundus pulsations has been pressure flow relations have been obtained in developed. Fundus pulsations in the macu- animal experiments in different species.5-8 In lar region are caused by the inflow and out- the rabbit, the choroidal blood flow has been flow ofblood into the choroid. The purpose shown to be pressure independent when IOP ofthis work was to study the influence of a was less than 20-25 mm Hg.9 peripheral vasoconstricting (the a,x adreno- Blood vessels can be considered as cylin- ceptor agonist phenylephrine), a predomi- ders filled with fluid at a pressure greater than nantly positive inotropic (the non-specific that outside the cylinders. The pressure dif- I adrenoceptor agonist isoproterenol), and ference between the inside and the outside of a non-specific vasodilating (sodium nitro- a vessel is called the transmural pressure P. prusside) model drug on ocular fundus The corresponding tension T in the vessel pulsations to determine reproducibility wall can be calculated by Laplace's law and sensitivity ofthe method. P=T/R, where R is the radius of the cylinder. -
Comparison of Gated Myocardial Perfusion SPECT, Echocardiography and Equilibrium Radionuclide Ventriculography in the Evaluation of Left Ventricle Contractility
Türk Kardiyol Dern Arş - Arch Turk Soc Cardiol 2014;42(4):349-357 doi: 10.5543/tkda.2014.74150 349 Comparison of gated myocardial perfusion SPECT, echocardiography and equilibrium radionuclide ventriculography in the evaluation of left ventricle contractility Sol ventrikül kontraktil fonksiyonlarının değerlendirilmesinde equilibrium radyonüklid ventrikülografi, ekokardiyografi ve miyokart perfüzyon gated SPECT görüntülemenin karşılaştırılması Filiz Hatipoğlu, M.D., Zeynep Burak, M.D.,# Özgür Ömür, M.D.# Department of Nuclear Medicine, Afyon Kocatepe University Faculty of Medicine, Afyonkarahisar; #Department of Nuclear Medicine, Ege University Faculty of Medicine, Izmir ABSTRACT ÖZET Objectives: In this study, we investigated the reliability of Amaç: Çalışmamızda, sol ventrikül (SV) fonksiyonlarının gated myocardial perfusion single-photon emission comput- değerlendirilmesinde ‘miyokart perfüzyon gated SPECT’ erized tomography (GSPECT) for the evaluation of left ven- (GSPECT) yönteminin güvenilirliği araştırıldı, GSPECT ile tricle (LV) function. We compared left ventricle ejection frac- hesaplanan sol ventrikül ejeksiyon fraksiyonu (SVEF) orta- tion (LVEF) calculated with GSPECT with the values derived laması planar ‘equilibrium gated radyonüklid ventrikülografi’ from planar equilibrium-gated radionuclide ventriculography (ERVG) ve ekokardiyografi (EKO) ile elde edilen değerlerle (ERVG) and echocardiography (ECHO). karşılaştırıldı. Study design: Forty-eight patients with suspected coronary Çalışma planı: Koroner arter hastalığı (KAH) şüphesi -
Clinical Characteristics and Prognosis Of
Lyu et al. BMC Cardiovascular Disorders (2019) 19:209 https://doi.org/10.1186/s12872-019-1177-1 RESEARCH ARTICLE Open Access Clinical characteristics and prognosis of heart failure with mid-range ejection fraction: insights from a multi-centre registry study in China Lyu Siqi, Yu Litian* , Tan Huiqiong, Liu Shaoshuai, Liu Xiaoning, Guo Xiao and Zhu Jun Abstract Background: Heart failure (HF) with mid-range ejection fraction (EF) (HFmrEF) has attracted increasing attention in recent years. However, the understanding of HFmrEF remains limited, especially among Asian patients. Therefore, analysis of a Chinese HF registry was undertaken to explore the clinical characteristics and prognosis of HFmrEF. Methods: A total of 755 HF patients from a multi-centre registry were classified into three groups based on EF measured by echocardiogram at recruitment: HF with reduced EF (HFrEF) (n = 211), HFmrEF (n = 201), and HF with preserved EF (HFpEF) (n = 343). Clinical data were carefully collected and analyzed at baseline. The primary endpoint was all-cause mortality and cardiovascular mortality while the secondary endpoints included hospitalization due to HF and major adverse cardiac events (MACE) during 1-year follow-up. Cox regression and Logistic regression were performed to identify the association between the three EF strata and 1-year outcomes. Results: The prevalence of HFmrEF was 26.6% in the observed HF patients. Most of the clinical characteristics of HFmrEF were intermediate between HFrEF and HFpEF. But a significantly higher ratio of prior myocardial infarction (p = 0.002), ischemic heart disease etiology (p = 0.004), antiplatelet drug use (p = 0.009), angioplasty or stent implantation (p = 0.003) were observed in patients with HFmrEF patients than those with HFpEF and HFrEF. -
The Evolution of Heart Failure with Reduced Ejection Fraction Pharmacotherapy: What Do We Have and Where Are We Going?
Pharmacology & Therapeutics 178 (2017) 67–82 Contents lists available at ScienceDirect Pharmacology & Therapeutics journal homepage: www.elsevier.com/locate/pharmthera Associate editor: M. Curtis The evolution of heart failure with reduced ejection fraction pharmacotherapy: What do we have and where are we going? Ahmed Selim, Ronald Zolty, Yiannis S. Chatzizisis ⁎ Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, NE, USA article info abstract Available online 21 March 2017 Cardiovascular diseases represent a leading cause of mortality and increased healthcare expenditure worldwide. Heart failure, which simply describes an inability of the heart to meet the body's needs, is the end point for many Keywords: other cardiovascular conditions. The last three decades have witnessed significant efforts aiming at the discovery Heart failure of treatments to improve the survival and quality of life of patients with heart failure; many were successful, Reduced ejection fraction while others failed. Given that most of the successes in treating heart failure were achieved in patients with re- Pharmacotherapy duced left ventricular ejection fraction (HFrEF), we constructed this review to look at the recent evolution of Novel drugs HFrEF pharmacotherapy. We also explore some of the ongoing clinical trials for new drugs, and investigate poten- tial treatment targets and pathways that might play a role in treating HFrEF in the future. © 2017 Elsevier Inc. All rights reserved. Contents 1. Introduction.............................................. -
Increased Pulse Pressure Is Associated with Reduced Baroreflex Sensitivity
Journal of Human Hypertension (2004) 18, 247–252 & 2004 Nature Publishing Group All rights reserved 0950-9240/04 $25.00 www.nature.com/jhh ORIGINAL ARTICLE Increased pulse pressure is associated with reduced baroreflex sensitivity R Virtanen1, A Jula2, H Huikuri3, T Kuusela4, H Helenius5, A Ylitalo6, L-M Voipio-Pulkki1,7, H Kauma3,8, YA Kesa¨niemi3,8 and J Airaksinen1 1Department of Medicine, University of Turku, Turku, Finland; 2Research Department of the Social Insurance Institution, Turku, Finland; 3Department of Medicine, University of Oulu, Oulu, Finland; 4Department of Physics, University of Turku, Turku, Finland; 5Department of Biostatistics, University of Turku, Turku, Finland; 6Division of Cardiology, Satakunta Central Hospital, Pori, Finland; 7Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland; 8Biocenter Oulu, University of Oulu, Oulu, Finland Although pulse pressure (PP), heart rate variability significant when 24-h ambulatory diastolic blood pres- (HRV) and baroreflex sensitivity (BRS) have been shown sure, body mass index, smoking and alcohol intake were to predict cardiovascular events and mortality in various added as covariates in the multivariate analysis. In- populations, their relationships have not been clarified. creased ambulatory PP was also associated with We examined these associations in two separate increased beat-to-beat systolic arterial pressure varia- population-based samples of healthy middle-aged sub- bility. Associations between ambulatory PP and HRV jects. In population 1, data were obtained from 149 were not significant after controlling for age and gender. subjects (71 men and 78 women) aged 35–64 (mean 47.7) Our results suggest that elevated PP does not affect years, and in population 2, from 214 subjects (88 men overall HRV, but it interferes with baroreflex-mediated and 126 women) aged 40–62 (mean 50.5) years. -
Static and Dynamic Components of Right Ventricular Afterload Are Negatively Associated with Calf Survival at High Altitude1
Published September 29, 2016 Static and dynamic components of right ventricular afterload are negatively associated with calf survival at high altitude1 J. M. Neary,*2 R. D. Brown,† T. N. Holt,‡ K. R. Stenmark,† R. M. Enns,§ M. G. Thomas,§ and F. B. Garry‡ *Department of Animal and Food Sciences, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock 79409-2141; †Division of Pediatric Critical Care, School of Medicine, University of Colorado Denver, Aurora 80045; ‡Integrated Livestock Management, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, 1678 Campus Delivery, Fort Collins 80523-1678; and, §Department of Animal Sciences, The College of Agricultural Sciences, Colorado State University, Fort Collins 80523-1171. ABSTRACT: The purposes of this study were to pulse pressures (P = 0.03) at 3 mo of age than calves evaluate mean, systolic, and diastolic pulmonary that survived to 7 mo. Calves presumed to have died arterial pressures; pulmonary arterial pulse pres- tended to have greater systemic oxygen extraction sures; and systemic oxygen extraction fraction as fractions at 3 mo of age than calves that survived (P risk factors for the survival of suckling calves on one = 0.13). Diastolic pressure was not associated with ranch located at an altitude of 2,730 m in Colorado, survival (P = 0.27). Mean pulmonary arterial pres- USA. A prospective cohort study of 58 calves was sure is predominantly determined by static resistance performed. Pulmonary arterial pressures and sys- attributable to distal pulmonary arterial remodeling. temic oxygen extraction were measured when calves Pulse pressure and systolic pulmonary arterial pres- were approximately 3 mo (86 ± 7 d) and 7 mo (197 sure represents the dynamic or oscillatory resistance ± 6 d) of age. -
Pulse and Blood Pressure Procedures Manual
NATIONAL HEALTH AND NUTRITION EXAMINATION SURVEY III CYCLE 2 PULSE AND BLOOD PRESSURE PROCEDURES FOR HOUSEHOLD INTERVIEWERS Prepared by: Westat, Inc. 1650 Research Boulevard Rockville, MD 20850 September 1989 Revised July 1993 TABLE OF CONTENTS Chapter Page 1 PULSE AND BLOOD PRESSURE PROCEDURES....................................... 1-1 1.1 Introduction to Pulse and Blood Pressure............................................. 1-1 1.2 Background on Pulse and Blood Pressure............................................ 1-1 1.2.1 The Circulatory System ........................................................... 1-1 1.2.2 Definition of Pulse ................................................................... 1-3 1.2.3 Definition of Blood Pressure................................................... 1-3 1.2.4 Meaning of Blood Pressure..................................................... 1-3 1.2.5 Method of Measuring Arterial Blood Pressure.......................................................................... 1-4 2 DESCRIPTION AND MAINTENANCE OF BLOOD PRESSURE EQUIPMENT ................................................................................. 2-1 2.1 Blood Pressure Equipment..................................................................... 2-1 2.1.1 Manometer................................................................................ 2-1 2.1.2 Inflation System........................................................................ 2-5 2.1.3 Stethoscope.............................................................................. -
Chapter 9 Monitoring of the Heart and Vascular System
Chapter 9 Monitoring of the Heart and Vascular System David L. Reich, MD • Alexander J. Mittnacht, MD • Martin J. London, MD • Joel A. Kaplan, MD Hemodynamic Monitoring Cardiac Output Monitoring Arterial Pressure Monitoring Indicator Dilution Arterial Cannulation Sites Analysis and Interpretation Indications of Hemodynamic Data Insertion Techniques Systemic and Pulmonary Vascular Resistances Central Venous Pressure Monitoring Frank-Starling Relationships Indications Monitoring Coronary Perfusion Complications Electrocardiography Pulmonary Arterial Pressure Monitoring Lead Systems Placement of the Pulmonary Artery Catheter Detection of Myocardial Ischemia Indications Intraoperative Lead Systems Complications Arrhythmia and Pacemaker Detection Pacing Catheters Mixed Venous Oxygen Saturation Catheters Summary References HEMODYNAMIC MONITORING For patients with severe cardiovascular disease and those undergoing surgery associ- ated with rapid hemodynamic changes, adequate hemodynamic monitoring should be available at all times. With the ability to measure and record almost all vital physi- ologic parameters, the development of acute hemodynamic changes may be observed and corrective action may be taken in an attempt to correct adverse hemodynamics and improve outcome. Although outcome changes are difficult to prove, it is a rea- sonable assumption that appropriate hemodynamic monitoring should reduce the incidence of major cardiovascular complications. This is based on the presumption that the data obtained from these monitors are interpreted correctly and that thera- peutic decisions are implemented in a timely fashion. Many devices are available to monitor the cardiovascular system. These devices range from those that are completely noninvasive, such as the blood pressure (BP) cuff and ECG, to those that are extremely invasive, such as the pulmonary artery (PA) catheter. To make the best use of invasive monitors, the potential benefits to be gained from the information must outweigh the potential complications. -
Calcium-Activated Ion Currents in Heart Failure and Ischemia: Point Counter Point
Open Access Full Text Article Journal of Cardiovascular Disorders A Austin Publishing Group Review Article Calcium-activated Ion Currents in Heart Failure and Ischemia: Point Counter Point William T Clusin* Division of Cardiology, Stanford University School of Abstract Medicine, USA A fundamental principle of cellular electrophysiology is that certain ionic *Corresponding author: William T Clusin, Division currents are activated (i.e. controlled) by the rise in and fall of cytosolic free of Cardiology, Stanford University School of Medicine, calcium at the inner surface of the cell membrane during action potentials and Stanford, CA, 94305, USA, Email: [email protected] the intervals between them. Knowledge about calcium-activated currents has developed in parallel with, and has been incorporated into emerging ideas Received: August 14, 2014; Accepted: September 17, about the mechanisms of cardiac arrhythmias and sudden death in patients with 2014; Published: September 19, 2014 heart disease. Among the earliest discoveries in this field was the recognition that calcium- activated inward current through the sodium calcium exchanger can lead to early or late after-depolarization’s (EAD’s and DAD’s) that trigger premature beats. More recently it has been found that calcium activated outward currents are more important in the heart than initially recognized because a group of calcium activated potassium channels known as SK channels is up-regulated in the ventricles during heart failure. Finally the idea that action potential shortening, which accompanies acute myocardial infarction, is a consequence of impaired calcium sequestration during ischemia, leading to increased outward potassium current, is supported by very recent research. The manner in which these different calcium activated ion currents in the heart regulate membrane potential and can cause – or in some cases prevent – arrhythmias is reconsidered in light of new evidence. -
Monitoring of the Central Blood Pressure Waveform Via a Conformal Ultrasonic Device
HHS Public Access Author manuscript Author ManuscriptAuthor Manuscript Author Nat Biomed Manuscript Author Eng. Author Manuscript Author manuscript; available in PMC 2019 March 21. Published in final edited form as: Nat Biomed Eng. 2018 September ; 2(9): 687–695. doi:10.1038/s41551-018-0287-x. Monitoring of the central blood pressure waveform via a conformal ultrasonic device Chonghe Wang#1, Xiaoshi Li#2, Hongjie Hu#2, Lin Zhang1, Zhenlong Huang1, Muyang Lin7, Zhuorui Zhang1, Zhenan Yin3, Brady Huang5, Hua Gong1, Shubha Bhaskaran3, Yue Gu2, Mitsutoshi Makihata6, Yuxuan Guo1, Yusheng Lei1, Yimu Chen1, Chunfeng Wang8, Yang Li1, Tianjiao Zhang1, Zeyu Chen4, Albert Pisano6, Liangfang Zhang1, Qifa Zhou4, and Sheng Xu1,2,3,9,* 1Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093-0448, USA. 2Materials Science and Engineering Program, University of California San Diego, La Jolla, CA, 92093-0418, USA. 3Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, 92093-0407, USA. 4Department of Ophthalmology and Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089-1111, USA. 5Department of Radiology, School of Medicine, University of California San Diego, La Jolla, CA, 92103, USA. 6Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, CA, 92093-0411, USA. 7School of Precision Instrument and Optoelectronic Engineering, Tianjin University, Tianjin, 300072, China. 8The Key Laboratory of Materials Processing and Mold of Ministry of Education, School of Materials Science and Engineering, School of Physics & Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, China. 9Department of Bioengineering, University of California San Diego, La Jolla, CA, 92093-0412, USA. -
Wide Pulse Pressure and Quincke's Pulse in High-Output Heart Failure
Case report BMJ Case Rep: first published as 10.1136/bcr-2021-241654 on 22 July 2021. Downloaded from Wide pulse pressure and Quincke’s pulse in high- output heart failure Katie Lin Berry,1 Peter D Sullivan,2 André Martin Mansoor 2 1School of Medicine, Oregon SUMMARY progressive exertional dyspnoea and weight gain. The Health & Science University, A 74-year -old man with a history of chronic alcohol use patient reported drinking three to four glasses of wine Portland, Oregon, USA 2 presented with progressive exertional dyspnoea and daily for at least 10 years. Physical examination was Department of Medicine, weight gain. On physical examination, he was noted notable for a body mass index of 34.3 kg/m2, blood Oregon Health & Science to have wide pulse pressure, elevated jugular venous pressure of 177/56 mm Hg, dependent pitting periph- University, Portland, Oregon, pressure, and alternating flushing and blanching of eral oedema, jugular venous pressure of 18 cm H O USA 2 the nail beds in concert with the cardiac cycle, known with a normal waveform, unremarkable S1 and S2 Correspondence to as Quincke’s pulse. Transthoracic echocardiography without extra transient sounds or murmurs, and subun- Dr André Martin Mansoor; demonstrated normal biventricular systolic function gual capillary pulsations (Quincke’s pulse) (video 1). mansooan@ ohsu. edu and valvular function, but noted a dilated inferior vena cava. Right heart catheterisation revealed elevated Accepted 1 July 2021 filling pressures, high cardiac output and low systemic INVESTIGATIONS vascular resistance, consistent with high-output heart Laboratory data were notable for haemoglobin of failure.