| Baudelocque's operation | An incision through the posterior cul-de-sac of the vagina for the removal of the ovum, in extrauterine pregnancy. (05 Mar 2000) |
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| Belsey Mark IV operation | A transthoracic anti-reflux procedure; it restores a 3 to 4 cm length of intraabdominal oesophagus, maintains a narrow diameter of the distal oesophagus by a gastric fundoplication. (05 Mar 2000) |
| Billroth's i operation | <procedure, surgery> The excision of the pylorus with end-to-end anastomosis of the stomach and the duodenum. (27 Sep 1997) |
| Billroth's operation I | Excision of the pylorus with end-to-end anastomosis of stomach and duodenum. Synonym: Billroth I anastomosis. (05 Mar 2000) |
| Billroth's operation II | Resection of the pylorus with the greater part of the lesser curvature of the stomach, closure of the cut ends of the duodenum and stomach, followed by a gastrojejunostomy. Synonym: Billroth II anastomosis. (05 Mar 2000) |
| Blalock-Hanlon operation | The creation of a large atrial septal defect as a palliative procedure for complete transposition of the great arteries. (05 Mar 2000) |
| Blalock-Taussig operation | An operation for congenital malformations of the heart, in which an abnormally small volume of blood passes through the pulmonary circuit; blood from the systemic circulation is directed to the lungs by anastomosing the right or left subclavian artery to the right or left pulmonary artery. (05 Mar 2000) |
| bloodless operation | An operation performed with negligible loss of blood. (05 Mar 2000) |
| Bozeman's operation | An operation for uterovaginal fistula, the cervix uteri being attached to the bladder and opening into its cavity. (05 Mar 2000) |
| Bricker operation | An operation utilizing an isolated segment of ileum to collect urine from the ureters and conduct it to the skin surface. (05 Mar 2000) |
| Brock operation | Transventricular valvotomy for relief of pulmonic valvar stenosis. Obsolete procedure. (05 Mar 2000) |
| Brunschwig's operation | Removal of the urinary bladder, lower parts of the ureter, vagina, uterus, adnexa, rectum, anus, and adjacent lymph nodes; a colostomy and urinary diversion are necessary. Synonym: Brunschwig's operation. (05 Mar 2000) |
| Burow's operation | An operation in which triangles of skin adjacent to a sliding flap are excised to facilitate movement of the flap. (05 Mar 2000) |
| Caldwell-Luc operation | An intraoral procedure for opening into the maxillary antrum through the supradental (canine) fossa above the maxillary premolar teeth. Synonym: intraoral antrostomy, Luc's operation. (05 Mar 2000) |
| capital operation | An obsolete term for an operation of such magnitude or involving vital organs to such an extent that it is per se dangerous to life. (05 Mar 2000) |