SYSTOLIC FUNCTION LOLITA BLAY

The ability of the heart to contract properly and pump blood is determined by its level of systolic function. 

The Systolic function of the LV strictly depends on a set of various factors, such as contractility of the LV, preload, afterload, Wall Motion movements and abnormalities if any are noted. Ejection Fraction is the best indicator of LV systolic function. EF= End-diastolic volume – End-systolic volume End diastolic volume

((Fragment 1. Baker, D. W. (1994))

eyeball method Using the “eyeball” method, what do you think the ejection fraction of the video image is?

PATHOPHISIOLOGY OF SYSTOLIC DYSFUNCTION

Degree of LV Systolic dysfunction is a major prognostic factor in cardiac disease as CMO, valvular heart disease, CHF.

CONGESTIVE HEART FAILURE  Characterized by EF < 45%  Caused by dysfunction of myocytes  Compensatory mechanisms of increased contractility and SV wears on the heart leading to decreased CO  The LV can’t pump enough blood into the body and fluid builds up in the lungs  Results in CHF

DILATED CARDIOMYOPATHY  LV wall thickness is reduced  Heart muscle becomes thin, week, and cannot pump blood efficiently  This leads to reduced EF and symptoms of heart failure

o The fundamental goals of drug therapy for DCM and CHF are to relieve symptoms, improve functional status, prevent disease progression, and reduce the rates of morbidity and mortality. Combination of diuretics and vasodilators help to reduce fluid retention and improves survival in patients with impaired LV systolic function. Patient education on lifestyle modifications should include smoking cessation, low-fat and low-sodium diet, physical activity, abstinence from alcohol, and restriction of fluid intake.

REFERENCES Baker, D. W. (1994). Management of heart failure. IV. Anticoagulation for patients with heart failure due to left ventricular systolic dysfunction. JAMA: The Journal of the American Medical Association, 272(20), Basic Critical Care Echocardiography. (n.d.). Retrieved April 17, 2016, from Daughenbaugh, L. A. (2007). Cardiomyopathy: An Overview. The Journal for Nurse Practitioners, 3(4), doi: /j.nurpra Delaney, V. MA, BS, RDCS, RVT, FASE. (2015). LV Systolic Function. Power Point. Left ventricle systolic function - Echocardiography in ICU. (n.d.). Retrieved April 17, 2016, from bin/mediawiki/index.php/Left_ventricle_systolic_function Otto, C. (2013). Textbook of clinical echocardiography (5th ed.). Philadelphia, PA: Elsevier/Saunders. Sandstede, J., Beer, M., Hofmann, S., Lipke, C., Harre, K., Pabst, T.,... Hahn, D. (2000). Changes in left and right ventricular cardiac function after valve replacement for aortic stenosis determined by cine MR imaging. J. Magn. Reson. Imaging Journal of Magnetic Resonance Imaging, 12(2), Shah, R., Wang, Y., & Foody, J. M. (2008). Effect of Statins, Angiotensin-Converting Enzyme Inhibitors, and Beta Blockers on Survival in Patients ≥65 Years of Age with Heart Failure and Preserved Left Ventricular Systolic Function. The American Journal of Cardiology, 101(2),

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