Other Ultrasound Guided Procedures
There are several other circumstances in which ultrasound guided
procedures may be performed.
Obstetrics:
- Fetal blood sampling
- Paracentesis
- Amnioreduction
- Fetal thoracocentesis
- Fetal bladder tap
- Amnioinfusion
- Fetal intraperitoneal saline infusion
These procedures are performed infrequently. Fetal blood
sampling is performed where there is a suspicion of fetal
anaemia of other rare fetal blood count problems. The sample
of blood is taken from the umbilical cord or from a small
vein inside the baby's liver.
Gynaecology:
- Transvaginal pelvic cyst aspiration
- Transabdominal pelvic cyst aspiration
- Saline instillation into the uterine cavity
- Assessment of tubal patency
In certain circumstances simple ovarian or other pelvic
cysts may be aspirated using a fine needle until complete
cyst collapse is observed. This in many circumstances, provides
almost immediate relief from the associated pain.
Instilling saline into the uterine cavity is a useful technique
which facilitates visualisation of the uterine cavity and
is particularly useful when small polyps within the cavity
are suspected. Following instillation these polyps now bathed
in fluid become obvious.
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