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.
Definition. Sick sinus syndrome â also known as sinus node disease or sinus node dysfunction â is the name for a group of heart rhythm problems (arrhythmias) in which the sinus node â the heart's natural pacemaker â doesn't work properly.ick sinus syndrome is relatively uncommon, but the risk of developing sick sinus syndrome increases with age. Many people with sick sinus syndrome eventually need a pacemaker to keep the heart in a regular rhythm. 1  Symptoms.