[Amniocentesis under permanent sonographic surveillance].
81 amniocenteses were carried out during the second trimenon for the purpose of prenatal diagnosis under permanent sonographic surveillance without any complications. Sonographic surveillance means that a sectorial scanner was used (RA1 and Combison 202 R) by the real-time process with a 110 degrees or 60 degrees sectorial field soundhead for closely observing the movements of the amniocentesis needle already in the subcutis. The progress of the needle through the individual layers can be observed continuously. As a matter of fact, the gradual progress of the needle from the extra-amnial to the intra-amnial area can be followed step by step and millimetre by millimetre. If the site of puncture is occupied by the foetus, the procedure can be stopped or interrupted. Depth of penetration of the needle into the amnion can be limited to a few millimetres. This puncture technique will usually eliminate anyl risk of injury to the foetus. Any danger of infection which may be attributed to the needle touching the soundhead or contact jelly, is also eliminated since the amniocentesis needle (sternal puncture needle 0.8 X 90 mm, preferably CSF puncture needle 20 G 3 1/2") is entered into the cutis at a distance of 8 cm from the soundhead. Hence, the only risk involved in amniocentesis which cannot be predicted in advance, would be haemorrhage due to injury to a vessel, mainly in the myometrium or, if transplacental puncture becomes necessary, a possible formation of a haematoma leading to abortion. This possible complication, however, had not been observed by us so far.
D000022:Abortion, Spontaneous / Q000209:etiology; D000649:Amniocentesis / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005315:Fetal Diseases / Q000209:etiology; D006801:Humans; D007239:Infections / Q000209:etiology; D011247:Pregnancy; D012306:Risk; D014463:Ultrasonography / Q000379:methods*
Amniozentese unter permanenter sonographischer Sicht.