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Obstetric
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Meningocele, Spinal Spina bifida is defined as a congenital bony defect affecting the vertebral arches arising from incomplete caudal neurulation. There is typically a saccular protrusion of neural elements through the spinal defect which may or may not be skin covered. As a cons... Dr Nigel Simpson, C Desjardins RDMS 01 January 2001 Meningocele, Cranial - Parietal Cephalocele is the protrusion of intracranial contents through a bony defect in the skull or through one of the parietal foramina. Cranial meningocele refers to herniation of meninges only, while encephalocele implies that brain tissue lies within the her... 01 January 2001 Gastroschisis The cause of gastroschisis remains unknown but may be due to an embryological aberration of the vitelline vessels resulting in a paramedian defect distinct from the umbilical stalk, usually on the right. The herniated gut is commonly short and malrotated, indi... Drs Challis, Ffarine, Morrow, Ritchie, Ryan 01 January 2001 Monoamniotic Twins Monoamniotic twins result following splitting of the embryoblast from days 8 to 12 post conception. Division after this time results in conjoined twins. They share not only the chorion (the outer membrane) but also the amnion (the inner membrane) and thus are... Philippe Jaunty MD PHD 01 January 2001 Monoamniotic Twins Monoamniotic twins result following splitting of the embryoblast from days 8 to 12 post conception. Division after this time results in conjoined twins. They share not only the chorion (the outer membrane) but also the amnion (the inner membrane) and thus are... Philippe Jaunty MD PHD 01 January 2001 Oligohydramnios The volume is determined by a steady state between input: fetal urination 400-1000 ml/da, alveolar exudate 600/900 ml/day, and outflow: fetal swallowing 250-450 ml/day and reabsorption through the chorioamniotic membranes 80 ml/day. Input is affected by mate... Dr Marie Josee Bedard 01 January 2001 Oesophageal Atresia This is a rare condition occurring in about 1 in 5000 births. There are six main types only two of which are associated with an absent stomach because there is no communication between the upper gut and trachea. In 80% of cases the oesophagus ends blindly... Clemence Desjardins RDMS 01 January 2001 Nuchal Translucency Nuchal translucency refers to the fluid collection behind the fetal neck which is measured between crown rump lengths of 38mm and 84mm , corresponding approximately with 10 to 14 weeks gestation. It is the maximum width of the subcutaneous translucency betwee... Drs Challis, Farine, Morrow, Ritchie, Ryan 01 January 2001 Nuchal Thickness Nuchal thickness refers to increased soft tissue thickening on the posterior aspect of the neck measured in the early 2nd trimester between 16 and 20 weeks gestation. Beyond this gestation the measurement is unreliable as a marker for chromosomal abnormalities... 01 January 2001 Noonan Syndrome Noonan and Ehmke (1963) were the first to report the syndrome called later Noonan syndrome. The incidence in the general population is estimated to be about 1 in 1000 and 1 in 2000 live births. The main features are short stature, a short neck with webbi... 01 January 2001
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The ASUM Online Clinical Handbook is presented as an educational aid for experienced practitioners. It is the responsibility of the individual practitioner to determine how the information should be applied to individual cases. |
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