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The contrabassoon is a very deep-sounding woodwind instrument that plays in the same sub-bass register as the tuba, double bass, or contrabass clarinet.It has a sounding range beginning at B ♭ 0 (or A 0, on some instruments) and extending up over three octaves to D 4, though the highest fourth is rarely scored for.
This surgery had not been possible prior to 1975 because of difficulty with re-implanting coronary arteries which perfuse the actual heart muscle itself , and even after it was first performed the excellent results from the Mustard operation meant that it was a long time before the Jatene procedure took over. [citation needed]
Arterial switch operation (ASO) or arterial switch, is an open heart surgical procedure used to correct dextro-transposition of the great arteries (d-TGA). [1] [2]Its development was pioneered by Canadian cardiac surgeon William Mustard and it was named for Brazilian cardiac surgeon Adib Jatene, who was the first to use it successfully.
This is a list of transposing instruments and their transposition. Transposing instruments are instruments for which the convention is to write music notation transposed relative to concert pitch . Instrument family
Atrial septostomy is a surgical procedure in which a small hole is created between the upper two chambers of the heart, the atria.This procedure is primarily used to palliate dextro-Transposition of the great arteries or d-TGA (often imprecisely called transposition of the great arteries), a life-threatening cyanotic congenital heart defect seen in infants.
It involves the intentional creation of a septal defect in order to alter the flow of oxygenated blood. It was devised as a palliative correction for transposition of the great vessels. The Blalock–Hanlon procedure was a cardiothoracic procedure created in the 1950s. The Blalock–Hanlon procedure was created to enhance intracardiac ...
The contrabassophone is a woodwind instrument, invented about 1847 by German bassoon maker Heinrich Joseph Haseneier. [1] It was intended as a substitute for the contrabassoon, which at that time was an unsatisfactory instrument, with a muffled sound due to tone holes that were too small and too close together.
Thomas G. Baffes (April 3, 1923 – June 15, 1997) was an American surgeon and attorney noted for developing a surgical procedure to repair a heart defect known as transposition of the great vessels, which often caused "blue baby" deaths.