• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Heart failure - Medically fit for exams
Heart failure - Medically fit for exams

... o Chest pain (may go with pleural effusion/pulmonary oedema) o Murmur (eg mitral regurgitation - systolic) ...
Preoperative Evaluation and Risk Assessment in the Cardiac
Preoperative Evaluation and Risk Assessment in the Cardiac

... Predictably dropped beats (grouped beats) ...
Malignant primary cardiac tumors
Malignant primary cardiac tumors

... common condition almost exclusively in patients above 50. Limited to obese people. Atrial septum may be as thick as 7 cm. May present as atrial arrhythmias. Treatment is simply wt. loss. ...
Past and future aspects of clinical electrophysiology
Past and future aspects of clinical electrophysiology

... favoured these advances. On the one hand, patients live longer and thus are more likely to experience arrhythmias. On the other hand, circulatory problems of the cardiac vessels have increased enormously, and this has been identified as the primary cause of cardiac rhythm disorders. Coronary heart d ...
Cardiovascular Physiology
Cardiovascular Physiology

... valves, vena cavas, pulmonary artery, pulmonary vein, aorta, coronary arteries, papillary muscle, chordae tendinea. Be able to describe the function of each. 2. Understand the mechanism of function of the cardiac valves. 3. Be able to trace the flow of blood through the heart. Know the saturation of ...
hap11 - WordPress.com
hap11 - WordPress.com

... Frank-Starling Law of the Heart  Preload, or degree of stretch, of cardiac muscle cells before they contract is the critical factor controlling stroke volume  Slow heartbeat and exercise increase venous return to the heart, increasing SV  Blood loss and extremely rapid heartbeat decrease SV ...
Liu_Endocarditis Presentation
Liu_Endocarditis Presentation

... •National heart lung and blood institute (NHLBI). (2010). What is endocarditis. Retrieved from https://www.nhlbi.nih.gov/health/health-topics/topics/endo •Pierce, D., Calkins, B. C., & Thornton, K. (2012). Infectious endocarditis: diagnosis and treatment. American Family Physician, 85(10), p981-986 ...
NON-SURGICAL APPROACH TO ATRIAL SEPTAL DEFECT
NON-SURGICAL APPROACH TO ATRIAL SEPTAL DEFECT

... helpful in easing stress and developing more healthful lifestyles. A number of clinical studies have looked into the use of alternative therapy specifically for heart disease. Two recent studies that are of particular interest looked at CAM and its effect on heart disease. One study looked specifica ...
The Heart - csfcbiology
The Heart - csfcbiology

... The electrical activity of the heart can be monitored by an electrocardiograph. Several electrodes are attached to specific places on a person’s chest and limbs. These detect changes in polarization in the heart by measuring current at the skin surface. The leads are connected to a machine that draw ...
Myocardial infarction
Myocardial infarction

... cause of 40% to 50% of all MIs and typically results in infarction of the anterior wall of the left ventricle, the anterior two thirds of the ventricular septum, and most of the heart apex ...
module h - Macomb
module h - Macomb

... • The student will be able to: • Define inotropic and chronotropic. • List those cathecholamines classified as Inotropic Agents. • State the formula for calculating blood pressure. • Describe how cardiac output is determined. • Describe how an increased or decreased systemic vascular resistance will ...
Electrocardiogram
Electrocardiogram

... - Fires an electrical impulse (influencd by hormonal & neurological factors) through the atria - Contraction of the Atria occurs - blood forced into the vetricles - The normal heart rate rhythm is called normal sinus rhythm because a collection of heart cells called the sinus node (SA) controls the ...
Heart failure and breathlessness in end stage care
Heart failure and breathlessness in end stage care

...  Sudden death is caused most commonly by VT or VF in patients with LV dysfunction v ...
Cardio Investigations - Ipswich-Year2-Med-PBL-Gp-2
Cardio Investigations - Ipswich-Year2-Med-PBL-Gp-2

... with a gamma camera. This test can distinguish between reversible and irreversible ischaemia (the latter signifying infarcted tissue) ...
women suffering sudden cardiac arrest have - Cedars
women suffering sudden cardiac arrest have - Cedars

...  21 percent of women had severe left ventricular dysfunction, compared to 36 percent of men.  In analyses that controlled all variables to make more precise comparisons, women were half as likely as men to have severe left ventricular dysfunction and a third as likely to have previously diagnosed ...
Normal Hearts with Abnormal Beats Introduction
Normal Hearts with Abnormal Beats Introduction

Topic D.4 Heart - Cougar science rocks!
Topic D.4 Heart - Cougar science rocks!

... ARTIFICIAL PACEMAKER ...
New study shows tissue healing response following a heart attack
New study shows tissue healing response following a heart attack

... cardiac cells and found that following a heart attack the newly-forming scar tissue was made up of collagen fibers that were thinner, less naturally fluorescent, and more aligned than in healthy tissue. These fiber properties measured with multiphoton microscopy were associated with a poor mechanica ...
Cardiovascular System II
Cardiovascular System II

... years previously. Note that the QRS and T waves from the abnormal beat are different from the normal beats (why?) and there is a compensatory pause before the next normal beat (why?). PVC = premature ventricular contraction. This patient is at risk to fall into ventricular fibrillation if the PVC fa ...
Lead I
Lead I

... • Shape and duration of P may indicate atrial enlargement • PR interval: from onset of P wave to onset of QRS • Normal duration = 0.12-2.0 sec (120-200 ms) (3-4 horizontal boxes) • Represents atria to ventricular conduction time (through His bundle) ...
Heart failure
Heart failure

... • progressive heart failure as a consequence of ischemic myocardial damage. • In most instances there is a history of MI. • Chronic IHD usually results from postinfarction cardiac decompensation that follows exhaustion of the hypertrophy of the viable myocardium. • In other cases severe obstructive ...
Pdf version - Polish Archives of Internal Medicine
Pdf version - Polish Archives of Internal Medicine

... cardial viability characteristics for predicting long­‑term response to CRT. Patients and methods   ViaCRT was a prospective multicenter study involving 127 patients with heart failure. Cardiac dyssynchrony indices and low­‑ dose dobutamine response were determined by echocar‑ diography prior to CRT ...
Electrical Activity of the Heart
Electrical Activity of the Heart

... positive deflection will result. • If the waveform travels away from the + terminal lead towards the terminal, a negative going deflection will be seen. • If the waveform is travelling in a direction perpendicular to the line joining the sites where the two leads are placed, no deflection or a bipha ...
Premature Ventricular Contractions
Premature Ventricular Contractions

... • Meta-analysis 8 prospective studies (3,629 persons) PVC was associated with increased all cause mortality, cardiovascular mortality, SCD, or ischemic CHD (OR ...
Cardiac Arrhythmia - An-Najah National University
Cardiac Arrhythmia - An-Najah National University

... Cardiac Arrhythmia Arrhythmias: Abnormal rhythms of the heart that cause the heart to pump less effectively Arrhythmia occurs: ...
< 1 ... 612 613 614 615 616 617 618 619 620 ... 680 >

Cardiac contractility modulation



Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report