The link(s) below go to OES data maps for employment and wages by state and area. 1  Brickmasons and blockmasons. 2  Cement masons and concrete finishers. 3  Segmental pavers. 4  Stonemasons. 5  Terrazzo workers and finishers.
Sinus arrhythmia refers to the normal increase in heart rate that occurs during inspiration (when you breathe in). This is a normal response and is more accentuated in children than adults. Sinus tachycardia refers to a fast heartbeat (tachycardia) because of rapid firing of the sinoatrial (sinus) node.
An arrhythmia is a change in the rhythm of your heartbeat. When the heart beats too fast, it's called tachycardia. When it beats too slow, it's called bradycardia. An arrhythmia can also mean that your heart beats irregularly (skips a beat or has an extra beat).