Coverage for oxygen and oxygen equipment is dependent upon the presence of conditions that cause chronic hypoxemia. When the underlying condition is in the chronic stable state, blood oxygen testing may be performed by a qualified provider of laboratory services to evaluate the degree of hypoxemia.
A work in progress-new features will be added periodically. The trombone glissando is an idiomatic and frequently used technique that is often misunderstood. Too often composers write glisses that don't work on the instrument, thinking that any are possible. This information sheet outlines the rules for writing glisses that will work on the trombone. It can also be used as a slide position chart which shows the partials of the harmonic series. *Now updated to include glisses for the F-attachment, the bass trombone, and the alto trombone.
GGT. GGT (Gamma Glutamyl Transpeptidase) is an enzyme produced in bile ducts that may be elevated due to bile duct illness. The GGT test is extremely sensitive and may be elevated due to any type of liver disease or by different drugs, including alcohol, even when liver disease is minimal.GGT levels are sometimes elevated even in the case of a normally functioning liver.he GGT test is extremely sensitive and may be elevated due to any type of liver disease or by different drugs, including alcohol, even when liver disease is minimal. GGT levels are sometimes elevated even in the case of a normally functioning liver.