Many years ago physicians recognized extrauterine pregnancy and some patients actually recovered after ordinary treatment. Sometimes even then the diagnosis was made before rupture, and physicians treated these patients by killing the fetus with electricity, or morphin was injected into the sac and thus the life of the embryo was destroyed. Physicians then found patients with vague histories in whom inflammation would take place, and in the course of time an abscess would break into the rectum, bladder, or vagina, and fetal bones would pass. The physician then knew that he had a case of extrauterine pregnancy that had become infected and produced the symptoms that he was called on to treat.
With the advancement of abdominal surgery cases of extrauterine pregnancy were found during abdominal section. With the gradual development of pelvic surgery physicians were able to diagnosticate ruptured extrauterine pregnancy and by prompt operation could save a life.
CARSTENS JH. EXTRAUTERINE PREGNANCY: CASES OF UNUSUAL TYPE.. JAMA. 1905;XLV(19):1379-1381. doi:10.1001/jama.1905.52510190015001b