Bandl's ring

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an abnormal retraction ring (see retraction) that occurs in obstructed labour. It is a sign of impending rupture of the lower segment of the uterus, which becomes progressively thinner as Bandl's ring rises upwards. Immediate action to relieve the obstruction is then necessary, usually in the form of Caesarean section. [L. Bandl (1842–92), German obstetrician]

Subjects: Medicine and Health.

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