• 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
159º - Santeon
159º - Santeon

... third of the patients do not experience clinical benefit, which might be due to suboptimal position of the left ventricular (LV) lead. The purpose of this study was to examine whether the heart axis obtained from a vectorcardiogram (VCG) can be helpful in localising the left ventricular stimulation ...
Cardiac Cycle, Output and Sounds of the Heart
Cardiac Cycle, Output and Sounds of the Heart

... By: Cara Amundson, Trey Osterholt, Mohammad Ahmed, Abby Lathrop ...
Ventricular tachycardia (broad complex)
Ventricular tachycardia (broad complex)

... complexes must be generated in the ventricles independently from the atria. If this occurs either due to left or right bundle branch block or the presence of ventricular arrhythmias, QRS complxes will be broad (as the bundle/Purkinje system is that which ensures narrow complexes) VENTRICULAR TACHYCA ...
Causes - EDExam
Causes - EDExam

...  Any of these in the first 24hrs post MI Remember to exclude/treat causes In early AMI, Lignocaine is drug of choice BUT: AT  HR, treatment is to  HR first with Atropine ...
Anesthetic Management of a Patient with Palliated Hypoplastic Left
Anesthetic Management of a Patient with Palliated Hypoplastic Left

... acidosis   and   low   cardiac   output   (High   afterload).   Hypothermia   should   also   be   avoided   because  it  could  elevate  SVR  and  also  elevate  VO2.   ...
Signs and symptoms
Signs and symptoms

... nocturnal dyspnea) who have intact left ventricular systolic function may not have diastolic dysfunction, but have other etiologies that can account for their symptoms, including obesity, lung disease, or occult coronary ischemia . ...
Leonardo Macias, MD Presbyterian Heart Group October.2015
Leonardo Macias, MD Presbyterian Heart Group October.2015

... HF is a complex clinical syndrome that results from any structural or functional impairment of ventricular filling or ejection of blood  The cardinal manifestations of HF ▪ Dyspnea and fatigue ▪ Fluid retention, which may lead to pulmonary and/or splanchnic congestion and/or peripheral edema.  Cli ...
cardiac muscle
cardiac muscle

... 2) - this is called Plateau phase and is maintained for 200 – 300 ms – due to Ca++ influx Repolarization (Phase 3) – due to K+ efflux Resting Membrane Potential (Phase 4) ...
ACCF and AHA Release Guideline on the Management of Heart
ACCF and AHA Release Guideline on the Management of Heart

... making in the diagnosis of heart failure, especially when there is clinical uncertainty. Measurement of BNP or NT-proBNP is also useful in establishing the prognosis or disease severity in outpatients with chronic heart failure. BNP- or NT-proBNP–guided therapy can be useful to achieve optimal dosin ...
Insider - Optum360Coding.com
Insider - Optum360Coding.com

... and renal disease); assign category 402 (hypertensive heart disease) or 404 (hypertensive heart and chronic kidney disease) in addition to the appropriate codes for HF (428.0428.43) and CKD (585.x) if known • Diastolic or systolic dysfunction without mention of heart failure codes to 429.9, Heart d ...
Jun Summary
Jun Summary

... Thirty patients were identified as potential candidates for reconditioning and possible explant. Hemodynamic and echocardiographic data were used to assess the capability of weaning. LVAD weaning candidacy was attempted in the setting of aggressive medical management. If the aortic valve opening tim ...
Properties of Cardiac Muscle - squ
Properties of Cardiac Muscle - squ

... timing and strength of each heart beat but do not establish the fundamental rhythm. ...
End-of-life matters in chronic heart failure patients
End-of-life matters in chronic heart failure patients

... Approaching death with active implantable devices Implantable cardiological devices can be electronic (cardiovascular implantable electronic devices [CIEDs]) or mechanical (ventricular assist devices [VADs]). They improve or support functioning of the heart (CRT or VADs) or decrease the risk of SCD ...
Hemodialysis Induced Cardiac Injury in Chronic Renal Dysfunction
Hemodialysis Induced Cardiac Injury in Chronic Renal Dysfunction

... Recurrent HD-Induced Ischemic Injury • Long-term follow-up of HD patients with dialysis based echocardiography to identify those suffering from HD- induced cardiac injury revealed signifi cant effects on cardiac structure, function and patient survival. • Those patients who did not develop HD-induce ...
P26
P26

... and pharmacological strategies. However, few studies have investigated how combined treatment with those two separates from exercise training or medication alone. Method and results: We established cardiac metabolic dysfunction in post-myocardial infarction heart failure, before starting combined or ...
EKG Review - Rescue One
EKG Review - Rescue One

... Plumbing Beats = contractions • Each beat requires atrial and ventricular contraction • Heart is like a sponge. It absorbs and squeezes out blood with each contraction. If it is not “rung out fully” with each squeeze- it cannot absorb it’s full potential. ...
Cardiovascular System Lesson 2 Live Show
Cardiovascular System Lesson 2 Live Show

... in litres). From the left ventricle • The cardiac output is a product of stroke volume and heart rate. • Q = SV x HR. Trained; rest 5L Exercise 34L • HR = numbers of BPM. • SV = amount of blood ejected from LV each contraction (measured ml per beat). • Measured in ml/min or L/min – Max 100220ml ...
This checklist can assist you when prescribing MULTAQ
This checklist can assist you when prescribing MULTAQ

... with MULTAQ® can be initiated in an outpatient setting. See the SPC for full prescribing information. MULTAQ® is indicated for the maintenance of sinus rhythm after successful cardioversion in adult clinically stable patients with paroxysmal or persistent atrial fibrillation (AF). Due to its safety ...
Heart Anatomy and Cardiac Muscle Cell Structure
Heart Anatomy and Cardiac Muscle Cell Structure

... Increased EDV or myocardial fiber length results in increased SV or increased strength of contraction. Basis for Starling’s Law: P = 2T/r where P = pressure in ventricle or aorta at ejection T = myocardial tension required to generate that tension r = radius of ventricle at beginning of systole P = ...
Heart
Heart

...  branch from aorta  branch to carry blood throughout muscle ...
Most relevant technological advancements in cardiac pacing
Most relevant technological advancements in cardiac pacing

... therapy for sinus node dysfunction. Circulation. 2003;107:2932-7. MADIT II Investigators. The clinical implications of cumulative right ventricular pacing in the multicenter automatic defibrillator trial II. J Cardiovasc Electrophysiol. 2005 Apr;16(4):359-65. Effect of chronic right ventricular apic ...
Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)
Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)

... In contrast, however, some patients will have a left-dominant arrhythmogenic cardiomyopathy (LDAC, also known as left-sided ARVC or arrhythmogenic left ventricular cardiomyopathy). These patients have pathological changes that predominantly involve the LV. Differential diagnosis The baseline ECG may ...
Standard heart rate variability spectral analysis: does it purely
Standard heart rate variability spectral analysis: does it purely

... recorded 5-min resting ECGs in supine position and 6-min orthostatic test ECGs, respecting an individual recovery period of 5–20 min (depending on the reported previous activity level) before the first measurement to achieve signal stationarity. During the resting measurements, no VPCs were detected ...
Review of Cardiac Structure and Function
Review of Cardiac Structure and Function

... Striated muscle – contains actin and myosin Action potential stimulates release of Ca++ Ca++ binds to troponin Troponin moves the tropomyosin exposing myosin binding sites on the actin Myosin pulls on the actin, filaments slide past each other and muscle shortens ...
Patrick O`Brien and Femi Oyebode
Patrick O`Brien and Femi Oyebode

... Maximal changes in the QRS duration and the T 40 ms axis are usually present within 12 hours of ingestion but may take up to a week to resolve. Sinus tachycardia is the most common arrhythmia due to anticholinergic activity and inhibition of norepinephrine uptake by tricyclic antidepressants but bra ...
< 1 ... 610 611 612 613 614 615 616 617 618 ... 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