Chapter14 Flashcards
What is aortocaval compression syndrome?
Compression of the aorta and inferior vena cava (IVC) by the gravid uterus
What is another name for aortocaval compression syndrome?
Supine hypotensive syndrome
What is another name for a pregnancy outside of the uterus?
Ectopic pregnancy
What is mechanical indices?
The amount of transmitted energy by the ultrasound beam. The higher the frequency, the lower the mechanical under or MI; thus lower the frequency, the higher the MI.
What is thermal indices?
The output power indication of the amount of acoustic power it takes to raise the temperature of tissue by 1 °C
What is vasa previa?
Entrapment of the umbilical cord between the presenting fetal part and the cervix
What is placenta previa?
Condition where the placenta implantation is low in the uterus and will deliver before the fetus
What is the cause of aortocaval compression syndrome?
Compression of the great vessels
Aortocaval compression syndrome usually occurs after:
20 weeks gestation
What are symptoms of aortocaval compression syndrome?
nausea, hypotension, lightheadedness, and syncope
