Final answer:
In a normal, healthy heart, there are two audible heart sounds: S1 and S2. Abnormal findings during assessment on a school-age child include S3, S4, and heart murmurs.
Step-by-step explanation:
In a normal, healthy heart, there are only two audible heart sounds: S1 and S2. S1 is the sound created by the closing of the atrioventricular valves during ventricular contraction and is normally described as a "lub," or first heart sound. The second heart sound, S2, is the sound of the closing of the semilunar valves during ventricular diastole and is described as a "dub."
Therefore, the nurse should document S3 and S4 as abnormal findings if heard during the assessment, as these sounds are not typically heard in healthy individuals. A soft blowing sound heard during systole is called a heart murmur, which is also considered an abnormal finding.