Ectopic Pregnancy Nursing Care and Management

What is Ectopic Pregnancy?

Ectopic pregnancy is implantation of the fertilized egg outside the uterine cavity. It can occur on the ovary, in the cervix, in the abdomen, and most commonly in the fallopian tube, which accounts for about 95% of cases (StatPearls). It affects roughly 1% to 2% of pregnancies and is the leading cause of maternal death in the first trimester, accounting for about 10% to 15% of all maternal deaths (StatPearls).

Pathophysiology

Fertilization happens at the usual distal third of the fallopian tube, and the zygote begins to divide and grow. An obstruction (see Risk Factors) stops it from traveling the length of the tube, so it lodges at the narrowed point and implants there instead of in the uterus.

Risk Factors

• Previous infection such as salpingitis or pelvic inflammatory disease. Scarring from these infections causes tubal adhesions.
• Scars from tubal surgery, which create adhesions that block the egg from reaching the uterus.
• Congenital malformations such as tubal strictures.
• Uterine tumors pressing on the proximal end of the tubes, blocking the egg's access to the uterus.
• Intrauterine device use. An IUD inserted after conception may impede the traveling egg from reaching the implantation site.
• Smoking. Smokers have a higher incidence than non-smokers.
• Recent in vitro fertilization, which can slow zygote transport and raise the chance of tubal or ovarian implantation.
• Previous ectopic pregnancy. There is a 10% to 20% chance of recurrence, so women are advised to avoid pregnancy for a year afterward.

Signs and Symptoms

Catch it before rupture. Most ectopic pregnancies show no unusual signs at implantation, which makes early identification hard.

• Sharp abdominal pain. A sudden movement can pull on the anterior uterine support and cause abdominal pain.
• Vaginal spotting. Rare alongside the pain, but it can signal an approaching rupture.
• Sharp, stabbing pain in the lower quadrant. This says the ectopic pregnancy has already ruptured.
• Vaginal bleeding. Follows rupture, from torn and destroyed blood vessels. The amount is hard to gauge because some products of conception and blood may be expelled into the pelvic cavity.

Diagnostic Tests

• Pelvic ultrasound. An early pregnancy ultrasound is the most common way to identify an ectopic pregnancy.
• Magnetic resonance imaging. Also detects ectopic pregnancy and is safer than a CT scan in pregnancy.

Medical Interventions

Start management the moment she reaches the emergency room. A few minutes of delay changes the outcome.

• Methotrexate. The standard medical therapy for a stable, unruptured ectopic pregnancy (ACOG). This chemotherapeutic folic acid antagonist destroys rapidly growing cells such as the trophoblast and zygote, and is dosed with serial hCG monitoring until titers fall to negative. It leaves the tube intact with no surgical scarring.
• IV therapy. Used after rupture to restore intravascular volume lost to bleeding.
• Blood sample. Large blood loss is expected, so type and crossmatch in anticipation of transfusion. Use the same sample to check hemoglobin.

Surgical Interventions

Surgery follows rupture to keep the reproductive system functional and prevent complications.

• Laparoscopy. Ligates bleeding vessels and repairs or removes the damaged tube.
• Salpingectomy. Done when the tube is completely damaged. Remove the affected tube and suture what remains.

Nursing Management

Nursing Assessment

• No unusual symptoms are usually present at implantation. The usual pregnancy signs appear: positive pregnancy test, nausea and vomiting, amenorrhea.
• At 6 to 12 weeks, the trophoblast is large enough to rupture the tube. Bleeding follows, its amount depending on the number and size of affected vessels.
• After rupture, expect sharp, stabbing lower quadrant pain followed by scant vaginal bleeding.
• A woman arriving with a ruptured ectopic may show shock: rapid, thready pulse, rapid respirations, and decreased blood pressure.
• Decreased hCG or progesterone levels indicate the pregnancy has ended.

Nursing Diagnosis

• Risk for deficient fluid volume related to bleeding from a ruptured ectopic pregnancy.
• Powerlessness related to early loss of pregnancy.

Nursing Interventions

• On arrival in the emergency room, place her flat in bed.
• Assess vital signs for baseline and to detect shock.
• Maintain accurate intake and output to track renal function.

Evaluation

• The goal is to replace maternal blood loss and stop the bleeding.
• She maintains adequate fluid volume, shown by normal urine output of 30 to 60 mL/hr and specific gravity between 1.010 and 1.021.
• Vital signs, especially blood pressure and pulse, are stable and within normal range.
• She has moist mucous membranes, good skin turgor, and adequate capillary refill.

The zygote cannot be saved once it grows outside the uterus. What you give the woman and her family is accurate teaching about ectopic pregnancy and how to lower the risk of recurrence.

Frequently Asked Questions

Where do ectopic pregnancies usually implant? Most often in the fallopian tube, which accounts for about 95% of cases, with the ampulla the most common site. Less commonly they implant on the ovary, in the cervix, or in the abdomen (StatPearls).

Why is an ectopic pregnancy a medical emergency? A growing ectopic pregnancy can rupture the tube and cause life-threatening internal bleeding. It is the leading cause of maternal death in the first trimester, so early recognition before rupture is critical (StatPearls).

What are the warning signs a nurse should watch for? Sharp or stabbing lower-quadrant abdominal pain, vaginal spotting or bleeding, and signs of shock after rupture: a rapid, thready pulse, rapid respirations, and falling blood pressure. Positive pregnancy signs may also be present.

Can an ectopic pregnancy be treated without surgery? Yes, when it is caught early and the patient is stable. Methotrexate is the standard medical therapy for an unruptured ectopic pregnancy, dosed with serial hCG monitoring (ACOG). Rupture requires surgery.

Can the pregnancy be saved? No. A pregnancy implanted outside the uterus cannot survive or be relocated to the uterus, and continuing it endangers the mother's life.

What is the chance of having another ectopic pregnancy? About 10% to 20% after one ectopic pregnancy, so close monitoring with early ultrasound is recommended in future pregnancies (ACOG).