Pelvic Inflammatory Disease

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PID Basics - The Pelvic Peril

  • Ascending infection of upper female genital tract: endometritis, salpingitis, oophoritis, tubo-ovarian abscess, pelvic peritonitis.
  • Causative Agents:
    • Neisseria gonorrhoeae (most common in India)
    • Chlamydia trachomatis (most common worldwide)
    • Polymicrobial: Anaerobes, Mycoplasma genitalium, GBS, E. coli.
  • Risk Factors:
    • Multiple sexual partners, young age at first intercourse.
    • Previous PID, STIs.
    • IUCD insertion (first 3 weeks).
    • Douching, instrumentation.

Ascending infection in female reproductive tract

Chlamydia trachomatis is the most common cause of silent PID, leading to infertility and ectopic pregnancy due to tubal damage (Fitz-Hugh-Curtis syndrome: perihepatitis).

Symptoms & Signs - Sounding the Alarm

  • Cardinal Symptoms:
    • Lower abdominal pain: Bilateral, dull/crampy; often worse with menses/coitus.
    • Abnormal vaginal discharge: Typically mucopurulent ± odor.
    • Abnormal uterine bleeding: E.g., intermenstrual/postcoital.
  • Other Common Features:
    • Dyspareunia (deep).
    • Fever (>38.3°C/101°F), chills.
    • Nausea/vomiting (severe cases).
  • Key Examination Findings:
    • Cervical Motion Tenderness (CMT) - "Chandelier sign".
    • Adnexal tenderness (uni/bilateral).
    • Uterine tenderness.
    • Visible mucopurulent cervicitis.
    • ± Adnexal mass (suggests Tubo-Ovarian Abscess/TOA).
    • ± RUQ pain (Fitz-Hugh-Curtis syndrome).

⭐ Cervical Motion Tenderness (CMT), the "Chandelier Sign," is a classic and highly suggestive sign of PID on bimanual examination.

Pelvic Inflammatory Disease Clinical Signs

Diagnosis Decoded - Cracking the Case

  • Clinical Suspicion: Sexually active woman, lower abdominal pain.
  • Minimum CDC Criteria (≥1 required for empirical treatment):
    • Cervical Motion Tenderness (CMT) 📌 "Chandelier Sign"
    • Uterine tenderness
    • Adnexal tenderness
  • Additional Criteria (support diagnosis):
    • Oral temperature > 38.3°C
    • Abnormal mucopurulent cervical/vaginal discharge
    • ↑ WBCs on saline microscopy of vaginal secretions
    • Elevated ESR/CRP
    • Lab evidence of N. gonorrhoeae or C. trachomatis infection (NAAT)
  • Definitive/Specific Criteria (most conclusive):
    • Endometrial biopsy: Histopathologic evidence of endometritis

    • Transvaginal Sonography (TVS) or MRI: Thickened, fluid-filled tubes, tubo-ovarian abscess (TOA), hydrosalpinx.

    • Laparoscopy: Direct visualization (erythema, edema, adhesions, pus from fimbriae).

⭐ Laparoscopy remains the gold standard for PID diagnosis, particularly if the diagnosis is uncertain or symptoms persist despite initial therapy, allowing direct visualization of pelvic organs.

Treatment & Trouble - Taming the Flame

  • Goals: Relieve symptoms, cure infection, prevent sequelae (infertility, ectopic, chronic pain).
  • Hospitalize if: Surgical emergency unclear, TOA, pregnant, severe illness (high fever, N/V), no response/tolerance to oral.
  • Outpatient (Mild-Moderate PID):
    • Ceftriaxone 250mg IM (1 dose) + Doxycycline 100mg PO BID x 14d.
    • Add Metronidazole 500mg PO BID x 14d (if anaerobes/BV/trichomoniasis suspected).
  • Inpatient (Severe PID/TOA):
    • IV: Cefoxitin 2g q6h / Cefotetan 2g q12h + Doxycycline 100mg IV/PO q12h.
    • Alt: IV Clindamycin 900mg q8h + Gentamicin (LD 2mg/kg, MD 1.5mg/kg q8h or 3-5mg/kg qd).
    • Transition to PO for total 14d course.
  • Partner Management: Treat all sexual partners from preceding 60 days.
  • Follow-up: Re-evaluate in 48-72h. No improvement? Re-assess diagnosis/Admit.
  • Complications (Trouble): TOA, hydrosalpinx. 📌 PIPE: Pelvic pain (chronic), Infertility, Perihepatitis (Fitz-Hugh-Curtis), Ectopic pregnancy.

⭐ Fitz-Hugh-Curtis syndrome: perihepatitis (RUQ pain) with "violin-string" adhesions (liver capsule-peritoneum). Caused by C. trachomatis / N. gonorrhoeae.

High‑Yield Points - ⚡ Biggest Takeaways

  • PID is an ascending infection, primarily by N. gonorrhoeae & C. trachomatis.
  • Key symptoms: Lower abdominal pain; Key signs: Cervical motion tenderness (CMT), adnexal/uterine tenderness.
  • Laparoscopy is gold standard for diagnosis, but usually clinical diagnosis based on criteria.
  • Major complications: Infertility, ectopic pregnancy, chronic pelvic pain, tubo-ovarian abscess (TOA).
  • Fitz-Hugh-Curtis syndrome: Perihepatitis with RUQ pain and "violin-string" adhesions.
  • Treat with broad-spectrum antibiotics (e.g., ceftriaxone + doxycycline +/- metronidazole); treat partners_._

Practice Questions: Pelvic Inflammatory Disease

Test your understanding with these related questions

A 30-year-old woman presents with vaginal discharge and lower abdominal pain for 10 days. Examination reveals cervical motion tenderness and adnexal tenderness. Laboratory tests show elevated WBC count. What is the most appropriate initial antibiotic regimen?

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Flashcards: Pelvic Inflammatory Disease

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_____ is the gold standard approach for most accurate assessment of pelvic pathology.

TAP TO REVEAL ANSWER

_____ is the gold standard approach for most accurate assessment of pelvic pathology.

Laparoscopy

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