Keyword Analysis & Research: murmur grade


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Frequently Asked Questions

What is the difference between a grade 1 and grade 2 murmur?

Grade I murmurs are the least serious and are barely detectable with a stethoscope. Grade II murmurs are soft, but your veterinarian can hear them with the help of a stethoscope. Grade III murmurs have a loudness that falls in the middle of grades II and IV.

Are there different grades of murmurs?

There are three types of murmurs: systolic, diastolic, and continuous. This classification is based on the timing of the murmur. Systolic murmurs, for instance, are murmurs that take place when the heart muscle contracts, whereas diastolic murmurs happen when the heart muscle is relaxed in between beats.

What is the loudest grade of murmur?

Grade V murmurs are very loud and can be heard with a stethoscope without difficulty, and can also be felt by holding a hand against the dog’s chest. Grade VI murmurs, like grade V murmurs, are very loud and can be felt through the chest wall, and are the most severe of the heart murmurs.

How can you tell the difference between grades of heart murmurs?

A murmur that occurs when the heart muscle relaxes between beats is called a diastolic murmur. A systolic murmur occurs when the heart muscle contracts. Systolic murmurs are graded by intensity (loudness) from 1 to 6. A grade 1 is faint, heard only with a special effort. It's softer than the normal heart sounds.


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