Why do doctor give lasix for cardiac disease patients?

Hiya, my father had heart disease and was on water tablets, the reason is when you have heart disease as well as the heart having a little trouble it has a knock on effect on the other organs, it's nothing to worry about but with the water tablets it just gives the kidneys a help and enables the body to get rid of products in the blood that are not needed, if you are really worried about taking them for any reason, please speak to you GP who will reassure you
pete

Lasix is a diuretic (water pill) that reduces fluid in congestive heart failure, and it allows the heart to pump better.

to keep fluid from building up around the heart

Heart failure patients tend to retain salt and water, which ends up around the lungs. That's called congestive heart failure. Lasix is a diuretic that works by getting more salt out in the urine. Water follows the salt which is why people call it a fluid pill.

according to some school of thought lasix (which is a diuretic-causes more urine to be formed) reduces the work load on the heart by reducung the amount of water content of your blood hence reducing the blood volume to some extent.

Dr do this cause it helps the heart work better. The blood does not flow smoothly or correctly from the ventricles into the body. Thats why Cardiac patients have swelling in the legs and lungs. The blood pools in the heart and in the legs. The doctor should always prescribe potassium if he gives lasix. If not the patient will get dehydrated.

when the heart fails to pump effectively, fluids will start to build up behind (i.e. in the lungs) cos the heart is not able to suck in all the fluids from the lungs and push them forward through the systemic arteries.
now a diuretic (fluid bill) will force the kidneys to lose more fluids and help the heart by reducing the extra fluid load.
- an extra point for the lasix among the other diuretics is that: Lasix also causes the dilation of blood vessels. this will decrease the 'afterload' that the heart will have to pump into. (narrower vessels have more resistance!).

To reduce the workload for the heart.

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