Is culdocentesis reliable for diagnosing ectopic pregnancy?

Patient's question:

I was diagnosed with an ectopic pregnancy, which was a heavy blow to me. Do I really believe that the diagnosis of ectopic pregnancy through posterior fornix percussion?

Doctor's answer:

It is not diagnosed as an ectopic pregnancy through a posterior fornix puncture alone. Instead, it requires combining your last menstrual period time and a comprehensive evaluation of hCG to confirm the diagnosis. If there is a history of missed periods, abdominal pain, and bleeding, and the hCG test confirms pregnancy, while the ultrasound does not show an intrauterine gestational sac but does reveal pelvic fluid, a posterior fornix puncture may be needed to confirm whether there is abdominal blood accumulation, which helps in diagnosing an ectopic pregnancy.

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