Reduction in left ventricular, Biology

Assignment Help:

Q. Reduction in left ventricular?

Vasodilators improve stroke volume, and reduce degree of regurgitation. This results from decrease in systemic vascular resistance and leads to reduction in left ventricular end diastolic volume, after load, wall stress and LV mass. They also preserve LV systolic function. Hydralazine and nefedipine when given at appropriate doses decrease left ventricular size and improve LV function. The dose should be titrated to bring down systolic blood pressure as much as possible without getting side effects. Less consistent results were obtained with ACE inhibitors and increased plasma renin activity is not an issue in these patients. Vasodilators may be given in any patient with severe AR with LV dysfunction and symptoms of heart failure when patient is a poor candidate for surgery. They may also be given to a patient with severe AR and LV dysfunction with or without symptoms to improve hemodynamic profile before surgery. They are also indicated in a patient with severe AR and normal LV function. Here they delay the onset of LV dysfunction, symptom onset and postpone the time for AVR and also improve operative outcomes. In this situation there is no proven role of any other medication. Vasodilators should not be used as a substitute for aortic valve replacement in a patient with severe AR who needs surgery either due to LV dysfunction or symptoms. They are also not indicated in patients with mild AR and normal sized left ventricle with good LV function. Following AVR, ACE inhibitors may be better choice in patients with persistent myocardial systolic dysfunction.


Related Discussions:- Reduction in left ventricular

Percentage ratio of ash in honey, Q. Percentage ratio of ash in honey? ...

Q. Percentage ratio of ash in honey? Standards allow ash content in honey up to 0.5 per cent, but the ash of genuine honey seldom exceeds 0.35 per cent. It is determined by cha

Cell, compare and contrast plant cell and animal cell with labeling diagram...

compare and contrast plant cell and animal cell with labeling diagrams

How to investigate aortic stenosis by roentgenogram, Q. How to investigate ...

Q. How to investigate aortic stenosis by Roentgenogram? Cardiac enlargement does not occur in pure compensated aortic stenosis. Post stenotic dilatation of aorta may be seen. F

Excretory system, is thare any excretory system found in echinoderms

is thare any excretory system found in echinoderms

Altered glucose metabolism - metabolic response to injury, Explain the Alte...

Explain the Altered Glucose Metabolism - Metabolic Response to Injury? Following injury, hypoglycemia commonly occurs and is related to the severity of the stress. In the ebb p

Animal biodiversity, Discuss why Obelia is considered to be of special inte...

Discuss why Obelia is considered to be of special interest in Zoology as an animal showing an intermediate grade of organization.

What are the materials required for radiographic, What are the Materials re...

What are the Materials required for Radiographic 1. Alginate impression material. 2. Silicone separating spray/ petroleum jelly 3. Autopolymerizing PMMA (Clear)

Explain what is enzymes, Explain what is Enzymes? Enzymes are organic...

Explain what is Enzymes? Enzymes are organic substances that speed up, or catalyze, a chemical reaction. At a given temperature, molecules have varying amounts of energy, and

Define briefly about the copper, Define Briefly about the Copper? As ea...

Define Briefly about the Copper? As early as the times of Hippocrates, copper compounds were used to treat various diseases. However, in the 20" century, it was noticed that an

Intestinal phases of the ascaris infestation, Q. What are the main symptoms...

Q. What are the main symptoms of the pulmonary and of the intestinal phases of the ascaris infestation? In the pulmonary period the ascaris infestation causes hemoptysis, cough

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd