Hemorrhagic Disorders of Pregnancy

Learning Objectives for Hemorrhagic Disorders

• Comprehensive Examination: Analyze the anatomy, physiology, and pathophysiology of hemorrhagic disorders occurring during pregnancy.
• Epidemiological Context: Explore the epidemiology, etiology, and specific risk factors contributing to the development of hemorrhagic disorders.
• Clinical Differentiation: Differentiate between the clinical presentations and the corresponding treatments for various hemorrhagic disorders.
• Health Impact: Describe the physical and psychosocial impact of hemorrhagic disorders on a client’s overall health and well-being.
• Nursing Role: Explore the professional role of the nurse when providing care for clients experiencing these complications.
• Nursing Process Application: Apply the nursing process and clinical judgment functions, including recognizing cues and generating solutions, while caring for clients with hemorrhagic disorders.

Anatomy and Physiology: Reproductive System & Clotting

• The Menstrual Cycle and Implantation:   - Days $1$ through $5$: Characterized by the breakdown and shedding of the endometrium.   - Days $6$ through $10$: The endometrium undergoes repair and begins growth.   - Days $11$ through $18$: Continued growth of the endometrium.   - Days $19$ through $28$: The endometrium continues to thicken to prepare for potential pregnancy.   - Implantation: Around day $23$, the implantation of a blastocyst may occur.
• Structure of the Uterus and Vagina:   - The uterus consists of a uterine wall surrounding the cavity of the uterine body.   - The bottom of the uterine cavity contains the internal orifice of the cervix.   - The cervical canal leads to the external orifice of the cervix, which opens into the vagina.   - Anatomical changes occur significantly during pregnancy and labor.
• Hemostasis and Clotting Mediation:   - Key clotting factors involved include Factor VII, Factor VIII, Factor X, and Fibrinogen.   - Clotting mediators include Protein X, Plasmin, and Platelets.   - The physiology of these factors changes during pregnancy to manage blood loss but may lead to disorders if imbalanced.

Spontaneous Abortion (Miscarriage)

• Pathophysiology and Definition: Commonly known as a miscarriage, it is the naturally occurring loss of a pregnancy.
• Types of Spontaneous Abortion:   - Threatened Abortion: Potential loss; characterized by spotting but a closed cervix.   - Inevitable Abortion: Pregnancy loss is certain; cervix is dilated.   - Incomplete Abortion: Some products of conception remain in the uterus.   - Complete Abortion: All products of conception have been expelled.   - Septic Abortion: An abortion accompanied by infection.   - Missed Abortion: The fetus has died but is retained within the uterus.
• Medical and Procedural Management:   - Dilation and Curettage: It may be necessary to dilate the cervix to remove products of conception (medical management).   - Expectant Management: Monitoring to see if the body expels the tissue naturally.   - Alloimmunization: Management must account for Rh factor compatibility to prevent future pregnancy complications.
• Impact on Health:   - Psychosocial: Includes the experience of grief and loss.   - Health Promotion: Focuses on maternal client needs and disease prevention.
• Nursing Role and Process:   - Recognize Cues: Assessing for vaginal bleeding and pain.   - Analyze/Prioritize: Determining the risk of hemorrhage or infection.   - Implementation: Administering medications, providing emotional support, and teaching as an intervention.

Molar Pregnancy (Gestational Trophoblastic Disease)

• Pathophysiology: Characterized by the abnormal growth of trophoblasts; often presents with a "grape-like appearance" of hydropic vesicles without a functional fetus.
• Genetics and Classifications:   - Complete Mole: An ovum lacking maternal genetic material is fertilized by one sperm. The embryo results in $46XX$ chromosomes (entirely paternal).   - Partial Mole: An ovum containing maternal genetic material is fertilized by two sperm. This results in an embryo with $69XXY$ chromosomes.   - Invasive Mole: Trophoblastic tissue that invades the myometrium.
• Clinical Factors:   - High risk for Gestational Trophoblastic Neoplasia.   - Presentation includes abnormal laboratory tests (extremely high hCG levels) and specific diagnostic findings via ultrasound.
• Client-Centered Care:   - Treatments: Uterine evacuation is the primary treatment. In some cases, a hysterectomy or chemotherapy (if malignant) may be required.   - Nursing Role: Teaching regarding the need for long-term follow-up and the psychosocial impact of pregnancy loss.

Cervical Insufficiency

• Pathophysiology: Defined as painless cervical dilation that leads to second-trimester pregnancy loss.
• Anatomical Difference: A normal cervix remains closed with a mucus plug; an insufficient cervix lacks this plug and opens prematurely.
• Treatment and Therapies:   - Medical Management: The use of Progesterone to maintain pregnancy.   - Surgical Management: Cerclage placement, a procedure where the cervix is sewn shut to prevent premature opening.
• Impact on Health:   - High risk for preterm birth and labor.   - Psychosocial focus on the grief of mid-pregnancy loss.

Ectopic Pregnancy

• Pathophysiology: A pregnancy that implants outside of the uterine cavity, most commonly in the Fallopian tubes.
• Clinical Manifestations:   - Common signs include abdominal pain and vaginal bleeding.   - Manifestations may mimic other conditions, requiring careful diagnostic study.
• Management:   - Expectant Management: Monitoring for natural resolution.   - Medical Management: Use of Methotrexate, a folate antagonist that stops the growth of rapidly dividing cells, allowing the body to reabsorb the pregnancy.   - Surgical Management: Necessary if the tube has ruptured or medical management is not an option.
• Nursing Process: Identifying signs of rupture (shock, severe pain) and providing education on the effects and side effects of Methotrexate.

Placenta Previa

• Pathophysiology: The placenta implants in the lower segment of the uterus, covering or near the internal cervical os.
• Types of Placenta Previa:   - Complete: The placenta entirely covers the cervix.   - Partial: A portion of the bottom of the placenta covers the cervix.   - Marginal: The placenta is attached near the cervix but does not cover it.
• Placental Placement:   - Anterior: Attached to the front of the uterine wall.   - Posterior: Attached toward the top back of the uterus.
• Management and Nursing Care:   - Medications: Magnesium sulfate (anticonvulsant for neuroprotection) and Betamethasone (glucocorticoid for fetal lung maturity) may be ordered.   - Activity: Monitoring and teaching regarding activity restrictions and bleeding risks.   - Follow-up: Regular ultrasounds to monitor placental position.

Placental Abruption

• Pathophysiology: The premature separation of the placenta from the uterine wall before the birth of the fetus.
• Classifications:   - Visible Hemorrhage: Blood flow exits through the cervix and vagina.   - Concealed Hemorrhage: A pool of blood is trapped between the placenta and the uterine wall, with no external bleeding visible.   - Degrees of Abruption: Ranges from a small pool of blood at the attachment site to complete detachment hindering all blood flow to the fetus.
• Clinical Differentiation: Can be acute or chronic.
• Nursing Role: Prioritizing maternal and fetal safety, monitoring for signs of fetal distress, and preparing for urgent delivery if necessary.

Clotting Disorders in Pregnancy

• Pathophysiology: Imbalances in the clotting cascade involving Factor VII, VIII, X, and fibrinogen.
• Conditions:   - Inherited Thrombophilia: Genetic predisposition to forming blood clots.   - Gestational Thrombocytopenia: Low platelet count during pregnancy.
• Treatment Goals: Prevention of thromboembolic events and management of bleeding during delivery.
• Medication Administration: Nurses must anticipate the use of anticoagulants and manage their administration through pregnancy, labor, and the postpartum period.

Questions & Discussion

• Spontaneous Abortion:   - Question: Who may be impacted by a spontaneous abortion? What resources can a nurse recommend?   - Discussion: Impact extends to the pregnant person, partners, and family members. Recommendations include grief counseling, support groups, and clinical follow-up.
• Gestational Trophoblastic Neoplasia (GTN):   - Question: What is GTN and how should a nurse describe it? What is the treatment?   - Discussion: GTN is a group of pregnancy-related tumors. Nurses should explain it as abnormal tissue growth from a molar pregnancy. Treatment includes monitoring hCG levels, uterine evacuation, and potentially chemotherapy.
• Preterm Birth:   - Question: What are the risks of preterm birth for mother and infant? What is the nurse's role in preparation?   - Discussion: Fetal risks include respiratory distress and developmental delays. Maternal risks include infection and emotional trauma. The nurse prepares for neonatal resuscitation and administers steroids for lung maturity.
• Methotrexate:   - Question: Why is it ordered for ectopic pregnancy? How does it work? What is the client education?   - Discussion: It is ordered for non-ruptured ectopic pregnancies. It works by interfering with DNA synthesis (folate antagonist) to stop cell division. Education includes avoiding folic acid, limiting sun exposure, and reporting severe pain.
• Magnesium Sulfate and Betamethasone:   - Question: Why are these ordered? How/when are they administered?   - Discussion: Magnesium sulfate is used for fetal neuroprotection (or seizure prophylaxis in preeclampsia), usually via IV. Betamethasone is an IM injection given in two doses to accelerate fetal lung maturity when preterm delivery is imminent.
• Clotting Disorder Management:   - Question: Describe the goal of treatment for inherited thrombophilia. What medications are used?   - Discussion: The goal is to prevent DVT or PE. Anticoagulants (like Heparin or LMWH) are typically used and must be managed carefully near the time of delivery to minimize hemorrhage risk.