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 an abnormality in the timing or pattern of the heartbeat. When you have an arrhythmia, your heart may beat too quickly or too slowly, or you may experience an irregular rhythm in which your heart feels as if it is skipping a beat.. Some types of arrhythmia may not be serious.