Obstetrics and Gynecology—5%



imagesECTOPIC PREGNANCY


BASICS


images  Pregnancy located outside the uterus


    Fallopian tube ectopic (outer one-third most common)


    Cervical and extrauterine ectopic (rare)


ETIOLOGY


images  Conditions that block the fallopian tube


    History of sexually transmitted disease


    Past ectopic


    Past abdominal surgeries


    Endometriosis


    Intrauterine device or tubal ligation reversal


images  Increased risk with age >35, smoking, and fertility treatments


SIGNS AND SYMPTOMS


images  Pelvic pain (sudden, sharp, diffuse, or local)


images  Vaginal bleeding, spotting


images  Low back pain, shoulder pain


images  Weakness, dizziness, syncope


images  Tachycardic, hypotensive if ruptured


DIAGNOSTICS


images  Pelvic ultrasound, consider ultrasound bedside fast exam if concern for rupture


images  Lab tests: β-hCG (human chorionic gonadotropin), complete blood count (CBC), type and screen, comprehensive metabolic panel


TREATMENT


images  ABCs (airway, breathing, circulation), supportive, IVFs, transfuse when necessary


images  Immediate obstetric/gynecologic (OB/GYN) consultation for consideration of:


    Removal of the abnormal pregnancy


    Salpingectomy


    Methotrexate


imagesENDOMETRITIS


BASICS


images  Inflammation of the endometrium


images  Can be acute or chronic


ETIOLOGY


images  Caused by anaerobes and aerobes from genital tract


images  Chlamydia trachomatis and Neisseria gonorrhoeae are uncommon causes


images  Instrumentation, cesarean delivery, prolonged labor, multiple cervical exams, abortion


SIGNS AND SYMPTOMS


images  Postpartum fever, tachycardia, midline lower abdominal pain, uterine tenderness, malaise, purulent discharge


DIAGNOSTICS


images  History and clinical exam findings


TREATMENT


images  Supportive, IVFs, pain control, antibiotics for anaerobic coverage


imagesMASTITIS


BASICS


images  Inflammation of breast tissue that may or not be associated with infection


images  Primarily women of childbearing age


images  Most common in first-time nursing mothers


ETIOLOGY


images  Can be classified into three major categories:


    Infectious


      images  Lactational mastitis is most common


      images  Associated with abscesses; cellulitis is rare


      images  Common pathogens are Staphylococcus aureus (MRSA is most common), less frequently Streptococcus pyogenes, E. coli, or Bacteroides


    Noninfectious


      images  Postirradiation mastitis, periductal mastitis, superficial thrombophlebitis of the breast, duct ectasia


    Malignancy associated


      images  Large tumors can cause secondary infection as tissue becomes necrotic


SIGNS AND SYMPTOMS


images  Severe soreness, hardness, redness, heat, swelling of breast, generalized chills and fever


DIAGNOSTICS


images  History and clinical exam findings


images  Consider ultrasound for abscess


TREATMENT


images  Antibiotics can be used for infectious and noninfectious causes:


    Outpatient: dicloxacillin or cephalexin or clindamycin


    If at risk for MRSA: Bactrim or clindamycin


    Severe infection requiring admission: vancomycin


images  Pain control, increased fluid intake, ice


images  Continue nursing or pumping on infected breast and make sure to empty breast completely


images  If symptoms persist with antibiotics, consider abscess or malignancy


imagesMISCARRIAGES


BASICS


images  A pregnancy that has failed prior to 20 weeks gestation


images  Complete abortion: passage of all products of conception (POC)


images  Incomplete abortion: partial passage of POC


images  Inevitable abortion: POC have not passed, but cervical os is open with vaginal bleeding


images  Threatened abortion: vaginal bleeding without POC passage and closed cervical os


images  Missed abortion: death of embryo or fetus without passage of POC


ETIOLOGY


images  Chromosomal abnormalities, advanced maternal age, congenital abnormalities, trauma, hypothyroidism, medications, or substance abuse


SIGNS AND SYMPTOMS


images  Vaginal bleeding, abdominal cramping


DIAGNOSTICS


images  Lab testing including: CBC, β-hCG, Rh


images  Pelvic ultrasound which can be performed outpatient if known intrauterine pregnancy


TREATMENT


images  Hemodynamic monitoring for blood loss


images  Rhogam for Rh-negative patients


images  Consider OB/GYN consultation for possible D+C if patient is hemodynamically unstable


imagesOVARIAN MASS, OVARIAN CYST, AND OVARIAN TORSION


Ovarian Masses


BASICS


images  Common, ranging from small physiologic cysts to large masses causing ovarian torsion and necrosis, to malignancy


ETIOLOGY


images  Typically benign, but are defined as pathologic if >2.5 cm


images  Women of all ages are at risk


images  Most common in reproductive years


SIGNS AND SYMPTOMS


images  Often asymptomatic, mild to moderate pelvic and abdominal pain, dyspareunia


images  Abdominal and/or pelvic tenderness, adnexal tenderness


DIAGNOSTICS


images  Ultrasound


images  Labs including hCG to rule out ectopic, CBC if concern for hemorrhagic cyst (Table 11.1)


TREATMENT


images  Control pain, outpatient follow-up for repeat ultrasound












TABLE 11.1.


 


Ultrasound Characteristics of Ovarian Masses













Benign Cysts


Malignant


imagesThin-walled


imagesFluid-filled


images±Small free fluid in pelvis


images±Hemorrhage


imagesSolid


imagesInternal septations


imagesInternal echos


imagesDaughter cysts


imagesThickened walls


imagesLarge free fluid in pelvis/ascites


images  Most will resolve within 1 to 3 months


images  If malignancy suspected, refer to gynecology oncologist for laboratory testing and possible surgical exploration


Ruptured/Hemorrhagic Ovarian Cyst


BASICS


images  A rupture of a follicular cyst can be asymptomatic, mild transient pain, or significant pain


images  In severe cases, intraperitoneal hemorrhage can occur


ETIOLOGY


images  Occurs to women of reproductive years


images  Exact etiology is unknown though can occur in trauma


SIGNS AND SYMPTOMS


images  Severe, unilateral pelvic pain mid-menstrual cycle immediately following sexual intercourse, or with pelvic exam (can occur at other times of cycle or without sexual intercourse)


images  Abdominal and/or pelvic tenderness, adnexal tenderness; can have tachycardia and hypotension if significant blood loss


DIAGNOSTICS


images  Ultrasound


images  Serum β-hCG, hemoglobin/hematocrit (platelet count, prothrombin time (PT), partial thromboplastin time (PTT) if on antiplatelet or warfarin therapy or history of coagulopathy)


TREATMENT


images  Hemodynamically stable:


    Control pain with po or IV pain medications


    Consider serial hematocrit and observation if ongoing pain or anemia


images  Hemodynamically unstable:


    NPO, two large-bore IV, type and screen, pain control


    Surgery indicated only for brisk blood flow to ovary and continued bleeding


Ovarian Torsion


BASICS


images  Twisting or rotation of the ovary, which can lead to occlusion of the ovary’s blood supply


images  Three percent of all GYN emergencies


images  Prompt diagnosis is imperative to preserve function of ovary


ETIOLOGY


images  Most often occurs when a mass or functional cyst is present on ovary


images  Twisting of both ovary and fallopian tube on vascular pedicle → venous/lymphatic destruction → congestion and edema → ischemia and necrosis → infarction


images  Risk increases with size of mass until mass is so large that it becomes fixed in the pelvis


SIGNS AND SYMPTOMS


images  Sudden onset of unilateral, severe, sharp pelvic pain, often with vomiting, generally occurs midcycle


images  Low-grade fever; abdominal, pelvic, and adnexal tenderness


DIAGNOSTICS


images  Detailed history and clinical exam findings with an ovarian cyst


images  Labs including: serum β-hCG to rule out ectopic pregnancy; CBC, basic metabolic panel (BMP), type and screen


images  Urgent pelvic ultrasound with doppler, can be misleading due to dual blood supply of ovary


TREATMENT


images  ABCs, supportive, IV fluids, pain control


images  Consult GYN for emergent laparoscopy


    Even if blood flow is normal on ultrasound


    Laparoscopy is gold standard to confirm torsion and assess viability of ovary


imagesPELVIC INFLAMMATORY DISEASE


BASICS


images  Inflammation of pelvic organs, which can lead to infertility in women


ETIOLOGY


images  Bacteria, usually gonorrhea and Chlamydia, from the vagina or cervix travels into the uterus, fallopian tubes, ovaries, pelvis or the upper reproductive tract


images  Risk factors include:


    Sexual partner with gonorrhea or Chlamydia


    Multiple sexual partners


    Past history of any sexually transmitted infection/pelvic inflammatory disease (PID)


    Recent insertion of an intrauterine device


    Sexual activity during adolescence/young age


    Age <25 years


    Unprotected sex


SIGNS AND SYMPTOMS


images  Pelvic and lower abdominal pain


images  Vaginal discharge


images  Fevers and chills


images  Postcoital bleeding


images  Painful sexual intercourse


images  Tubo-ovarian abscess (TOA): unilateral adnexal tenderness, systemic symptoms


DIAGNOSTICS


images  PID: pelvic exam with findings of vaginal discharge, cervical motion tenderness (chandelier sign)


images  TOA: pelvic ultrasound


images  Cultures may show N. gonorrhoeae or C. trachomatis


TREATMENT


images  Centers for Disease Control and Prevention recommended regimen for outpatient treatment


    Ceftriaxone 250 mg intramuscular in a single dose plus doxycycline 100 mg orally twice a day for 14 days with or without metronidazole 500 mg orally twice a day for 14 days


images  Consider inpatient therapies if patient pregnant, unable to tolerate orals, or TOA


    Cefotetan or cefoxitin plus doxycycline


    Clindamycin plus gentamicin


imagesPLACENTAL ABRUPTION AND PLACENTAL PREVIA


Placental Abruption


BASICS


images  Premature separation of placenta from uterine wall


images  Significant cause of maternal and perinatal morbidity


ETIOLOGY


images  Chronic placental disease, abnormalities in early implantation, blunt abdominal trauma or rapid uterine decompression, uterine abnormalities, cocaine use, smoking


images  Risk factors: hypertension (HTN), preeclampsia, advanced maternal age, thrombophilia, prior spontaneous abortion, prior abruption, smoking, cocaine use, trauma, chorioamnionitis


SIGNS AND SYMPTOMS


images  Painful, vaginal bleeding (dark and scant to large-volume bright red blood)


images  Uterine tenderness, increased uterine tone, fetal distress; if severe, can lead to disseminated intravascular coagulation


DIAGNOSTICS


images  CBC, BMP, liver function test (LFT), PT, PTT, and type and screen, disseminated intravascular coagulation panel as indicated


images  Ultrasound: often not useful as high rate of false negative results


images  Any woman with small bleeding from placental separation is at risk of severe abruption


TREATMENT


images  ABCs, supportive, place on left side, IV fluids, consider transfusion, Rhogam


images  Urgent GYN consultation for further management and delivery


Placenta Previa


BASICS


images  Implantation of placenta over cervical os


ETIOLOGY


images  Risk factors: previous placenta previa, previous C-section or intrauterine surgical procedure, multiple gestation, multiparity, advanced maternal age, infertility treatment, previous abortion, smoking, cocaine use, male fetus


SIGNS AND SYMPTOMS


images  Painless, bright red vaginal bleeding after 20 weeks gestation


images  Defer full speculum exam to OB/GYN


DIAGNOSTICS


images  Prompt pelvic ultrasound to evaluate placental location


images  Labs including: CBC, BMP, LFT, PT, PTT, fibrinogen level, type and screen, Rh


TREATMENT


images  Most women require conservative care after first episode if no severe bleeding


images  ABCs, supportive, place on left side, IV fluids, consider transfusion, Rhogam


images  Urgent GYN consultation for further management and delivery


images  Emergent delivery for fetal distress, maternal hemorrhage refractory to treatment, significant bleeding after 34 weeks


    Cesarean section is method of choice


imagesPREECLAMPSIA, ECLAMPSIA, AND HELLP


BASICS


images  A syndrome of HTN (>140/90), proteinuria, and edema after 20 weeks gestation


images  Eclampsia includes above plus seizure


    Generally seen in third trimester or up to 10 days postpartum


ETIOLOGY


images  Exact cause is unknown


images  Risk factors include:


    Young or advanced maternal age


    History of HTN


    Diabetes, kidney disease


    Multiple gestation


    Hydatidiform mole


SIGNS AND SYMPTOMS


images  Hypertension, peripheral edema, headache, visual changes, papilledema


images  Eclampsia includes seizures


DIAGNOSTICS


images  Physical exam including attention to blood pressure, lower extremities


images  Labs including urine to evaluate for proteinuria


TREATMENT


images  Treatment is blood pressure control with hydralazine


images  Consult GYN for further management and fetal and maternal monitoring


images  Eclampsia:


    Left lateral decubitus position to increase blood flow to uterus


    Seizure treatment:


      images  Magnesium sulfate


      images  If refractory, use Phenytoin or diazepam


    Definitive treatment is delivery of fetus


imagesHELLP


BASICS


images  Severe, clinical variant of preeclampsia


    Hemolysis


    Elevated liver enzymes


    Low platelets


ETIOLOGY


images  Exact cause is unknown


images  Risk factors include:


    Maternal age >35


    Multiparity


    White race


    History of poor pregnancy outcomes


SIGNS AND SYMPTOMS


images  Abdominal pain (usually epigastric or right upper quadrant), nausea, vomiting, malaise


DIAGNOSTICS


images  Labs including: urinalysis, CBC with smear, BMP, LFT, PT, PTT, 24-hour urine


images  Hemolytic anemia with schistocytes


images  Platelet count <150,000


images  Aspirate aminotransferase >70 IU per L


images  Total bilirubin >1.2 mg per dL


TREATMENT


images  Definitive treatment is urgent delivery, but can be timed based on safety and severity of maternal illness


images  Treat HTN and seizure prophylaxis


imagesVULVOVAGINITIS


Bacterial Vaginosis (BV)


BASICS


images  Not sexually transmitted infection


images  Associated with multiple sex partners, vaginal lactobacilli, douching


ETIOLOGY


images  Overgrowth of anaerobic microorganisms primarily: Gardnerella vaginalis


SIGNS AND SYMPTOMS


images  Vaginal irritation, pain, pruritus, white, thick malodorous discharge


DIAGNOSTICS


images  Wet mount


images  pH 5.0 to 5.5, clue cells, fishy odor with KOH (whiff test)


TREATMENT


images  Metronidazole 500 mg po bid ×7 days (or)


images  MetroGel PV (or)


images  Clindamycin cream PV


images  Treat pregnant women only if symptomatic


Trichomoniasis


BASICS


images  Sexually transmitted infection


images  Men/women commonly asymptomatic


ETIOLOGY


images  Protozoa: Trichomonas vaginalis


SIGNS AND SYMPTOMS


images  Malodorous frothy yellow-green vaginal discharge dyspareunia, abdominal pain


DIAGNOSTICS


images  Wet mount


images  pH >4.5 and trichomonads


TREATMENT


images  Metronidazole 2 g po single dose


images  Metronidazole 500 mg bid ×7 days


images  Treat all sexual partners


Vulvovaginal Candidiasis


BASICS


images  Pregnancy, diabetes, antibiotics


ETIOLOGY


images  Yeast/fungi: Candida albicans


SIGNS AND SYMPTOMS


images  Vulvar pruritus, white, curd-like vaginal discharge, erythema, dyspareunia, dysuria


DIAGNOSTICS


images  Wet mount


images  pH <4.5, pseudohyphae, culture (+) for Candida


TREATMENT


images  Fluconazole 150 mg po single dose (nonpregnant women only) (or)


images  Topical antifungal PV


Oct 8, 2016 | Posted by in EMERGENCY MEDICINE | Comments Off on Obstetrics and Gynecology—5%

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