Pressure changes during embryo transfer.
OBJECTIVE
To investigate the pressure changes in the transferred load during mock ET.


METHODS
Experimental setup.


METHODS
Academic Research Institute of Mechanical Engineering and private centers of reproductive medicine.


METHODS
None.


METHODS
None.


METHODS
Laboratory simulations of ET into a rigid transparent uterine model equipped with a pressure sensor.


RESULTS
Injection of a transferring load during mock ET could increase pressure locally up to 155 mm Hg in <0.1 seconds. The recorded pressure increase slope reached values as high as 72,000 mmHg/s, and the pressure decrease slope reached 144,000 mmHg/s. The pressure buildup in the transferred liquid was proportional to the ejection speed of the transferred load.


CONCLUSIONS
ET can cause rapid pressure fluctuations in the transferred liquid. Therefore, it is advisable to transfer the embryo gently with minimum ejection speed, to avoid exposing the embryo to the steep pressure gradient.
Grygoruk
Cezary
C
Center for Reproductive Medicine BOCIAN, Bialystok Technical University, Bialystok, Poland. cezary.grygoruk@gmail.com
Sieczynski
Piotr
P
Pietrewicz
Piotr
P
Mrugacz
Malgorzata
M
Gagan
Jerzy
J
Mrugacz
Grzegorz
G
D001364:Awareness; D003198:Computer Simulation; D004624:Embryo Transfer / Q000009:adverse effects / Q000379:methods; D005260:Female; D006801:Humans; D007267:Injections; D008953:Models, Anatomic; D008954:Models, Biological; D011312:Pressure; D011361:Professional Competence; D014599:Uterus / Q000502:physiology*