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.
sick sinus syndrome a complex cardiac arrhythmia usually associated with syncope and manifested as severe sinus bradycardia alone, sinus bradycardia alternating with tachycardia (see bradycardia-tachycardia syndrome), or sinus bradycardia with atrioventricular block.