Risk Groups for Ectopic Pregnancy  
 

Ectopic pregnancy rates have increased steadily from 4.5 per 1000 pregnancies in 1970 to 16.8 per 1000 pregnancies in 1987. All females of reproductive age are at risk of EP.

• Delayed transit of zygote

Previous-tubal pregnancy (10-fold increase)

Previous tubal surgery

Previous salpingitis — particularly chiamydia

Infertility — shared tubal abnormalities with EP

• Infertility                                                                                

 Ovulation induction

IVF multiple pregnancy contributory factor

 Gamete intrafollicular transfer — contributory factors include the hydrostatic forces generated during transfer

Intrauterine contraceptive devices

History of PID

 Increasing maternal age and parity.