Monday, April 27, 2015

Acute LVF ( Acute left ventricular failure)

Introduction

Heart failure occurs when heart cannot pump enough blood to body demand. This can be chronic or acute.The heart failure could begin on the left or right side of the heart, or both sides may fail at the same time. If heart muscle is too weak, the ventricles can stretch out and fail to work efficiently. These are a few different types of heart failure.

Left-sided heart failure: This is the most common type of heart failure. Patient presents short of breath due to backed-up fluid in the lungs. 
There are two types of left-sided heart failure. Systolic heart failure, This pumping problem prevents the left ventricle from proper pumping and is most often associated with acute heart failure. & Diastolic heart failure,This is caused by a blood-filling problem in the left ventricle.

Presentation

Signs & symptoms 
  • Edema
  • Shortness of breath
  • Weakness & fatigue
  • Irregular or fast heartbeat
  • Coughing and wheezing
  • Spitting up pink phlegm
  • Decreased ability to concentrate
  • Chest pain (Mayoclinicorg, 2015)

Causes

Disease or a birth defect, Acute MI, Mitral regurgitation, arrhythmia, aortic dissections,valve destruction (endocarditis), myocarditis, Poor diet and lack of exercise, high blood pressure, diabetes, faulty heart valves,coronary artery disease, inherited heart defects, and a damaged or inflamed heart,  infections,allergic reactios,viruses that damage the heart, cardiopulmonary bypass surgery. (Healthlinecom, 2015)

Diagnosis

Chest X-ray

Blood tests

Stress test

Electrocardiogram

Echocardiogram

Angiogram

CT scan & MRI

Management 
·         Angiotensin-converting enzyme (ACE) inhibitors. ACE inhibitors are a type of vasodilator, a drug that widens blood vessels to lower blood pressure, improve blood flow and decrease the workload on the heart. Examples include enalapril (Vasotec), lisinopril (Zestril) and captopril (Capoten).
·         Angiotensin II receptor blockers.  Losartan (Cozaar) and valsartan (Diovan), have many of the same benefits as ACE inhibitors. They may be an alternative for people who can't tolerate ACE inhibitors.
·         Beta blockers. This class of drugs not only slows heart rate and reduces blood pressure but also limits or reverses some of the damage to heart if patient have systolic heart failure. Examples include carvedilol (Coreg), metoprolol (Lopressor) and bisoprolol (Zebeta).
·         Diuretics.  such as furosemide (Lasix)
·         Aldosterone antagonists. These drugs include spironolactone (Aldactone) and eplerenone (Inspra). These are potassium-sparing diuretics, which also have additional properties that may help people with severe systolic heart failure live longer.
·         Inotropes. These are intravenous medications used in people with severe heart failure in the hospital to improve heart pumping function and maintain blood pressure.
·         Digoxin (Lanoxin)
·         Calcium channel blockers may improve exercise tolerance via their vasodilatory properties, and nondihydropyridine calcium channel blockers are also used for ventricular rate control in patients with atrial fibrillation.
·          Amlodipine has antianginal properties and is also indicated in hypertension.
 (Medscapecom, 2015)

Surgery options 
·         Coronary bypass surgery. 
·         Heart valve repair or replacement
·         Implantable cardioverter-defibrillators (ICDs)
·         Cardiac resynchronization therapy (CRT), or biventricular pacing
·         Heart pumps & heart transplant 

References
Medscapecom. 2015. Medscapecom. [Online]. [22 April 2015]. Available from: http://emedicine.medscape.com/article/163062-treatment
Healthlinecom. 2015. Healthline. [Online]. [22 April 2015]. Available from: http://www.healthline.com/health/acute-heart-failure

Mayoclinicorg. 2015. Mayoclinicorg. [Online]. [7 May 2015]. Available from: http://www.mayoclinic.org/diseases-conditions/heart-failure/basics/symptoms/con-20029801

 

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