What are the five cardiac functions?

In daily life, we always emphasize the need to check our hearts, because we all know that functional problems of the heart have a great impact on the human body. If they are not detected in time, they are likely to cause some problems, especially children's hearts need more attention. What are the five heart function items? The following will introduce to you the standards of the five functional items.

Five criteria for myocardial enzyme spectrum in children

When healthy children are tested for myocardial enzyme spectrum, the test results will often show an upward arrow, which means that the test index is slightly higher than the reference value. Why is this? Experts pointed out that this is related to the fact that the hospital uses adult standards for this test. Children's myocardial enzyme spectrum values ​​are generally higher than those of adults, and the younger the age, the higher the myocardial enzyme spectrum.

So, what are the standards for the five items of myocardial enzyme spectrum in children?

At present, the normal values ​​of myocardial enzyme spectrum are mostly based on adult standards, while the normal values ​​of children are higher than those of adults. The myocardial enzyme spectrum of most children is 2 to 3 times the normal reference value.

The percentage increases of the upper limits of various enzymes in children compared with the reference values ​​of myocardial enzyme spectrum in adults are: CK (creatine kinase) and AST (aspartate aminotransferase) increase by about 15%, CK-MB (creatine kinase isoenzyme) increase by about 30%, LDH (lactate dehydrogenase) and HBDH (hydroxybutyrate dehydrogenase) increase by about 90%. Generally speaking, the myocardial enzyme spectrum has clinical value only when its values ​​increase significantly and exceed the above-mentioned allowable range.

When children's myocardial enzyme test results are elevated, doctors will generally decide whether further examination or clinical intervention is needed based on the clinical manifestations. Usually, if other physical examination results are normal and there are no other special symptoms or signs, doctors will consider it normal for certain elevated myocardial enzyme spectra to be normal.