Heart failure, Biology

Assignment Help:

It is a clinical syndrome wherein heart fails to pump blood at a rate required by the tissues of the body or it can do so only with an elevated filling pressure. This may be due to insufficient cardiac filling or impaired contractility and emptying. Various compensatory mechanisms set in to increase blood volume, heart rate and cardiac muscle mass. Despite these compensatory mechanisms, the ability of the heart to contract and relax may decline leading to worsening heart failure. 

An alternative definition stresses on the clinical consequences of heart failure. Heart failure has been defined as a complex clinical syndrome i.e. characterized by abnormal left ventricular function and neurohormonal regulation, leading to effort intolerance, fluid retention and reduced longevity.

Other terms like "myocardial failure" and "circulatory failure" should be differentiated from the term "heart failure". Myocardial failure denotes abnormal systolic and diastolic function of the heart, which may be symptomatic or asymptomatic. Circulatory failure can be due to noncardiac conditions like haemorrhagic shock, while cardiac function is preserved.


Related Discussions:- Heart failure

Explain carbonating - method of food preservation, Explain Carbonating - me...

Explain Carbonating - method of food preservation? Carbonated water is the water in which carbon dioxide gas has been dissolved under pressure. By eliminating oxygen, carbonate

Determine the food sources of iodine, Determine the Food Sources of Iodine?...

Determine the Food Sources of Iodine? Please note that unlike other minerals studied so far, like selenium, the iodine concentration in foods is highly variable and also depend

Define causes of vitamin a deficiency - inadequate diet, Define Causes of V...

Define Causes of Vitamin A Deficiency - Inadequate diet? A child is born with poor stores of vitamins and minerals due to maternal malnutrition. Diets of pregnant women are def

How does the inflammation mechanism work, How does the inflammation mechani...

How does the inflammation mechanism work? When some tissue injury happens histamine and other vasoactive substances (known as mediators of inflammation) are released, they caus

Define oseltamivir, Oseltamivir (Tamiflu)   This oral neuraminidase i...

Oseltamivir (Tamiflu)   This oral neuraminidase inhibitor, started within 36 hours of symptom onset, can decrease the severity and duration of symptoms caused by either influ

Define descending type of paper chromatography, Define Descending type of p...

Define Descending type of paper chromatography? In descending chromatography, the movement or flow of mobile phase is in downward direction. In this technique the solvent is ke

Venous system, VENOU S SYSTEM It is collecting system formed by the...

VENOU S SYSTEM It is collecting system formed by the uniting branches as smaller and then larger veins and venacava leading to the heart. Blood from anterior part of the

Explain the equilibrium dialysis, Explain the Equilibrium Dialysis? Equ...

Explain the Equilibrium Dialysis? Equilibrium dialysis is a useful technique for studying the binding of a small uncharged solute species (a ligand) to a macromolecule. The mac

Counselling skills used in diabetes mellitus, Q. Counselling skills used in...

Q. Counselling skills used in diabetes mellitus? Information gathering is an important skill for understanding of the client. Behaviour is complex and, therefore it is importan

Define the term- ultrafiltration, Define the term- Ultrafiltration Ultr...

Define the term- Ultrafiltration Ultrafiltration occurs when the flow of a substance across a cell membrane is increased by a hydrostatic pressure. This process was initially b

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