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版主: doggydc, Jeff Wang, JLLinVET, 艾咪
doggydc 寫:Enlargement of heart is a complicated problem to answer here. Let's talk about the congestive heart failure(CHF) related heart problem here. From the name of CHF we can understand the size of heart is enlarged due to the muscular strengh of heart muscle is getting weaker and can't pump enough blood out of the heart into the artery system and the blood start to accumulate inside the heart, then the heart is extended and getting larger. This bad condition keeps cycling and evantually the muscle of heart is stretched and losing their contraction ability. Finally the heart will lose its function and becomes failure. The blood can't go back to the heart as expected and start to stay in the blood vessel system which will increase the blood amout inside circulation and increase the blood pressure gradually. Once the blood pressure increasing inside the blood vessel system of the lung, evantually some fluid will start to leak into the interstitial area of lung and induce lung congestion, then the dog(same as people or other animals) will feels the pressure inside chest and start to show signs of coughing. This type of coughing is dry cough which means there is no any products coming out after coughing. This is why we have to use blood pressure medicine to reduce the blood pressure to help the circulation ability and diuretic to get rid of additional fluid inside the lung system to reduce the cough.
OK, I will try to stop here because it is getting more complicated and I think it is out of normal people 's ability to understand by just reading. If you are still interested, please try to me when I am in Taiwan next week.
Dr Lee from Elwood animal medical groupl
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