Study Notes on Pelvic Inflammatory Disease and Ectopic Pregnancy

Pelvic Inflammatory Disease (PID)

Definition

  • Pelvic Inflammatory Disease (PID): Inflammation of the reproductive tract, commonly affecting the fallopian tubes (uterine tubes) and ovaries.

Terms

  • Salpingitis: Inflammation of the fallopian tubes.

  • Oophoritis: Inflammation of the ovaries.

Clinical Presentation

  • Anatomy Details: Swollen fallopian tubes, possibly larger than normal due to inflammation.

  • Pain: Painful movement at the cervix.

  • Obstruction: Blocked fallopian tubes due to adhesions, impacting the passage of oocytes.

Etiology

  • Primary Causes:

    • Sexually Transmitted Infections (STIs):

    • Gonorrhea

    • Chlamydia

    • Other Bacterial Infections:

    • Staphylococci

    • Streptococci

    • E. coli

    • Pseudomonas

  • Polymicrobial Infection: PID can involve multiple different microbes.

Pathophysiology

  • Infection Mechanism: Infection begins in the reproductive tract, moving from the cervix to the uterus and up to the fallopian tubes.

  • Edema Formation: Bacteria cause inflammation and edema within the tube walls, reducing the diameter of the lumen.

    • Fluid Accumulation: Exudate accumulation further narrows the luminal size, making oocyte transport difficult.

  • Consequences:

    • Oocyte struggles to travel down the fallopian tube to reach the uterus.

    • The ovary may become involved, leading to potential peritonitis or abscess formation.

Clinical Manifestations

  • Asymptomatic Cases: Some patients may not exhibit symptoms.

  • Symptomatic Cases:

    • Abdominal pain and fever.

    • Increased pain during ovulation.

    • Abnormal or heavy vaginal bleeding.

    • Dysuria (painful urination).

    • Painful intercourse (dyspareunia).

    • Generalized fatigue.

    • Signs of peritonitis.

Diagnosis

  • Diagnostic Start: Blood tests to check for inflammation.

  • Specific Tests:

    • Full blood count.

    • Erythrocyte sedimentation rate (ESR): elevated levels indicate inflammation.

  • Cultures:

    • Cervical samples to identify causative organisms.

    • Specimens from the area around the ovaries for culture.

  • Imaging: Laparoscopy for direct observation of the reproductive tract and detailed assessment of inflammation.

  • STI Testing: Identify if gonorrhea or chlamydia is present by growing the bacteria in the lab.

Management

  • Treatment Protocol:

    • Antimicrobials: Prescribe specific antibiotics based on cultured organisms.

    • Symptom Relief: Analgesics for pain and inflammation.

    • Partner Treatment: Assess and treat sexual partners to prevent reinfection.

    • Surgery: Necessary for abscess drainage if significant swelling exists.

    • Sexual Activity: Strong recommendation to avoid sexual intercourse during treatment.

    • Follow-Up Examinations: Necessary to ensure infection resolution and recovery of the reproductive system.

Ectopic Pregnancy

Definition

  • Ectopic Pregnancy: A pregnancy occurring outside the uterus, typically within the fallopian tubes.

Typical Process of Pregnancy

  • Oocyte is released from the ovary and drawn into the fallopian tube by fimbriae. In normal cases, fertilization retrieves in this area, and the zygote travels to the uterus for embedding into the endometrium.

Pathophysiology

  • Ectopic Process: The fertilized egg remains within the fallopian tube and begins to grow there instead of descending into the uterus.

  • Common Site: Mostly occurs in the fallopian tube, but may also find fertilized eggs on the ovaries or in the pelvic cavity.

Possible Causes

  • Impairments:

    • Reduction in ciliary cells necessary for fostering transport through the tube.

    • Inflammation along the tube may enhance elevated COX enzyme activity, influencing smooth muscle contraction.

  • Transport Issues:

    • Decreased smooth muscle contractility affects movement within the tubes, compromising transport.

  • Altered Local Environment: Hormonal changes enhance the attachment of the embryo to non-ideal locations, induced by pro-inflammatory mediators and growth factors.