They occur in two oxidation states, +2 and +4. Silicon and germanium share similar physical and chemical characteristics, since both are metalloids. Silicon. Silicon is the element with atomic number 14, and it is in the group 14 of the periodic table, just below carbon.
A paresthesia is an abnormal sensation of tingling, numbness, or burning. Paresthesias are usually felt in the hands, feet, arms, or legs, but can be felt anywhere. The sensation is usually unpleasant.
Epidural anesthesia is a technique whereby a local anesthetic drug is injected through a catheter placed into the epidural space. This technique has some similarity to spinal anesthesia, both are neuraxial, and the two techniques may be easily confused with each other. Differences include: 1  The injected dose for an epidural is larger, being about 10â20 mL compared to 1.5â3.5 mL in a spinal.