(1) But the possibility of natural conception depends on the tubal patency and ovulatory function.(2) Most patients will maintain airway patency although some may require intubation with mechanical ventilation.(3) patency rates(4) In 80-90 % of cases it is successful in restoring the patency of at least one fallopian tube.(5) the procedure was successful in restoring the patency of the fallopian tubes(6) Because of the poor prognosis, palliative methods are needed to maintain airway patency .(7) a complication, once patency is established in the bitch, is contamination of the environment with eggs(8) We also found that nasal patency decreased as room temperatures increased.