medical complications in pregnancy
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Medical complications in pregnancy...TRANSCRIPT
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MEDICAL CONDITIONS
COMPLICATING
PREGNANCY
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DIABETES
MELLITUS
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DEFINITION OF TERMS
OVERT DIABETES
- those known to have diabetes mellitus
before pregnancy
GESTATIONAL DIABETES
- those diagnosed during pregnancy
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CLASSIFICATION DURING PREGNANCY
CLASS ONSET FBS 2-HR PP GL THERAPY
A1 Gestational <105 mg/dl <120 mg/dl Diet
A2 Gestational >105 mg/dl >120 mg/dl Insulin
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CLASSIFICATION DURING PREGNANCY
CLASS AGE/ONSET DURATION VASCULAR THERAPY
(Years) DISEASE
B Over 20 < 10 None Insulin
C 10 – 19 10 – 19 None Insulin
D Before 10 > 20 Benign Insulin
Retinopathy
F Any Any Nephropathy Insulin
R Any Any Proliferative Insulin
Retinopathy
H Any Any Heart Insulin
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GESTATIONAL DIABETES
carbohydrate intolerance of variable severity with onset or first recognition during pregnancy
disorder of late gestationdisorder induced by pregnancy:
from exagerrated physiological changes
in glucose metabolism
Type 2 DM unmasked during pregnancy
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A 23 yr old markedly obese primigravida at 12 weeks gestation seeks consultation for her first prenatal check-up. She denies any family history of diabetes mellitus. As part of prenatal work-up, you would:
A. take a 50 gm glucose challenge test as soon as possible
B. order for 50 gm glucose challenge test at 24-28 weeks
C. take a 100 gm oral glucose tolerance test as soon as possible
D. order for a 100 gm oral glucose tolerance test at 24-28 weeks
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WHO
to screen ?
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GDM - SCREENING
RISK FACTORSAge over 30Family Hx of DMPrior macrosomic, malformed or
stillborn infantObesityHypertensionGlucosuria
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WHEN
to screen ?
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RECOMMENDED SCREENING STRATEGY BASED ON RISK ASSESSMENT FOR DETECTING GDM
LOW RISK
Blood glucose testing not routinely required if all of the ff characteristics are present:
Member of ethnic grp w/ low prevalence of GDMNo known DM in 1st degree relativeAge less than 25 yrsWeight normal before pregnancyNo Hx of abnormal glucose metabolismNo Hx of poor obstetrical outcome
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RECOMMENDED SCREENING STRATEGY BASED ON RISK ASSESSMENT FOR DETECTING GDM
AVERAGE RISK
Perform blood glucose testing at 24-28 wks:
Hispanic AfricanNative American South or East Asian origin
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RECOMMENDED SCREENING STRATEGY BASED ON RISK ASSESSMENT FOR DETECTING GDM
HIGH RISK
Perform blood glucose testing as soon as feasible. If normal, repeat at 24-28 wks or at any time pt has SSx suggestive of hyperglycemia:
Marked obesityStrong family Hx of type 2 DMPrior gestational diabetesGlucosuria
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HOW
to screen ?
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GDM - SCREENING
50-g GLUCOSE CHALLENGE TEST
> 140 mg/dl or > 130 mg/dl
– proceed to 100 gm 3 Hr Oral Glucose Tolerance Test
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GDM - SCREENING
100-gm ORAL GLUCOSE TOLERANCE TEST (OGTT)
TIME NDDG CARPENTER & COUSTAN (1979) (1989)Fasting 105 951 hour 190 1802 hours 165 1553 hours 145 140
GDM is dxed with 2 or > abn values.
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A 23 yr old markedly obese primigravida at 12 weeks gestation seeks consultation for her first prenatal check-up. She denies any family history of diabetes mellitus. As part of prenatal work-up, you would:
A. take a 50 gm glucose challenge test as soon as possible
B. order for 50 gm glucose challenge test at 24-28 weeks
C. take a 100 gm oral glucose tolerance test as soon as possible
D. order for a 100 gm oral glucose tolerance test at 24-28 weeks
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GDM - ADVERSE EFFECTS
MACROSOMIAExcessive fat deposition on shoulders/trunkPredisposes to shoulder dystociaMaternal hyperglycemia transfer of excess
glucose to fetus stimulate fetal insulin secretion which is a potent growth factor
HYPOGLYCEMIA at birth
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MACROSOMIAPathogenesis
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Fetal effects of persistent maternal fasting hyperglycemia include:
A. macrosomia
B. postterm pregnancy
C. oligohydramnios
D. hypoglycemia
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GDM - MANAGEMENT
Type A1 – diet alone Type A2 – diet + insulin
DIET
Goals: 1. to provide the necessary nutrients for
mother and fetus
2. to control glucose levels
3. to prevent starvation ketosis
EXERCISE
upper body cardiovascular training
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Recommended postpartum follow-up for patients with gestational diabetes consists of:
A. daily blood sugar monitoring
B. fasting blood sugar on day of discharge
C. 50 gm glucose challenge test 1 week postpartum
D. 75 gm oral glucose tolerance test 6 weeks postpartum
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GDM - PROGNOSIS
50% risk of developing overt DM w/in 20 yrs Evaluate with 75-gm OGTT – 6-12 wks pp
TIME NO DIABETES IMPAIRED DIABETES GL. TOL.Fasting < 115 < 140 >/= 140½, 1, 1-½ All < 200 1 value >/= 200 1 value
>/=2002 hr < 140 140 – 199 >/= 200
If 75-g OGTT is normal – take FBS yearly
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Recommended postpartum follow-up for patients with gestational diabetes consists of:
A. daily blood sugar monitoring
B. fasting blood sugar on day of discharge
C. 50 gm glucose challenge test 1 week postpartum
D. 75 gm oral glucose tolerance test 6 weeks postpartum
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OVERT DIABETES
Pregestational diabetesKnown diabetics before
pregnancy
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The diagnosis of overt diabetes is most probable in the gravida with which of the ff OGTT results (Fasting-1hr-2hr-3hr post glucose load – mg/dl):
A. 100 – 190 – 170 – 130
B. 90 – 195 – 140 – 120
C. 95 - 180 - 155 - 140
D. 130 - 170 - 160 - 135
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OVERT DIABETESDIAGNOSIS DURING PREGNANCY
RBS >200 mg/dl + Sx: polyuria, polydipsia, wt loss
Fasting glucose > 125 mg/dlStrong likelihood in pts with: strong family Hx of DM
previous large infants persistent glucosuria unexplained fetal losses
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The diagnosis of overt diabetes is most probable in the gravida with which of the ff OGTT results (Fasting-1hr-2hr-3hr post glucose load – mg/dl):
A. 100 – 190 – 170 – 130
B. 90 – 195 – 140 – 120
C. 95 - 180 - 155 - 140
D. 130 - 170 - 160 - 135
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OVERT DIABETES
EFFECTS ON FETUSABORTION – poor glycemic control
HbA1c > 12%
persistent pre-prandial glucose level > 120 mg/dl
MALFORMATIONS
Type 1 – 5-10% incidence
from poorly controlled DM preconceptionally and in early pregnancy
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OVERT DIABETES
EFFECTS ON FETUSUNEXPLAINED FETAL DEATH
HYDRAMNIOS from fetal polyuria
RESPIRATORY DISTRESS from prematurity
HYPOGLYCEMIA from hyperplasia of fetal B-islet cells
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OVERT DIABETESEFFECTS ON FETUSHYPOCALCEMIA
HYPOBILIRUBINEMIA prematurity polycythemia with hemolysis
CARDIAC HYPERTROPHY
INHERITANCE OF DM Diabetic Mother – 1-3% risk Diabetic Father – 6% Diabetic Father and Mother – 20 % risk
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OVERT DIABETESEFFECTS ON MOTHERDIABETIC NEPHROPATHY inc. when HbA1c > 10% microalbuminuria overt proteinuria HPN end-stage renal dse
DIABETIC RETINOPATHY after 7 yrs – 50% chance of dev. after 20 yrs – 90%
DIABETIC NEUROPATHY
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OVERT DIABETESEFFECTS ON MOTHERPREECLAMPSIA not related to glucose control
KETOACIDOSIS result of: hyperemesis gravidarum use of B sympathomimetic drugs (tocolytics) infections use of corticosteroids
INFECTIONS – 80%
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OVERT DIABETESMANAGEMENT
PRECONCEPTIONHbA1c – expresses an ave. of circulating
glucose for the past 4-6 wks
- assess metabolic control
- > 10% - inc. risk for malformations
Folate – 400 ug/day
- to decrease neural tube defects
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OVERT DIABETESMANAGEMENTPREGNANCYBlood glucose monitoring
Precise fetal age determination LMP, FH, FHT, U/S Well established EDC – to assess accurately macrosomia, hydramnios, FGR
Diet
Insulin
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PULMONARY
DISORDERS
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NORMAL CHANGES IN PREGNANCY
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PULMONARY
TUBERCULOSIS
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TUBERCULOSIS
Organism: Mycobacterium tuberculosis
DIAGNOSISSymptoms: cough w/ minimal sputum
low-grade fever
hemoptysis
weight loss
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TUBERCULOSIS
DIAGNOSISLab: Chest Xray
cavitations
mediastinal lymphadenopathy extent of dse may be masked by lung
compression
Sputum exam – acid-fast bacilli
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Recommended initial treatment of active tuberculosis during pregnancy is:
A. INH, Ethambutol, Rifampin
B. INH, Ethambutol, Pyrazinamide, Rifampin
C. INH, Rifampin, Streptomycin
D. INH only
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TUBERCULOSIS
MANAGEMENT Isoniazid + Rifampicin + Ethambutol for a minimum
of 9 months (WHO: + Purazinamide x 6 months)
EFFECT ON PREGNANCY Preterm delivery Low birthweight Perinatal death Neonatal tuberculosis – rare, fatal
Route: hematogenous
aspiration of inf secretion at del unlikely if Rxed
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Recommended initial treatment of active tuberculosis during pregnancy is:
A. INH, Ethambutol, Rifampin
B. INH, Ethambutol, Pyrazinamide, Rifampin
C. INH, Rifampin, Streptomycin
D. INH only
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URINARY TRACT
DISORDERS
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Which of the ff laboratory values is not normal during pregnancy and suggests an underlying renal disease:
A. Urinalysis: glucose +
B. mild right hydronephrosis on ultrasound
C. serum creatinine – 1.2 mg/dl
D. Urinalysis: protein - trace
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NORMAL CHANGES IN PREGNANCY
Increased renal sizeDilatation of pelves, calyces and ureters - not to be mistaken for obstructive
uropathy - predispose to serious upper urinary
tract infections Increased GFR and RPF - Serum creatinine and urea nitrogen
decrease
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DIAGNOSTIC TESTS
Urinalysis glucosuria orthostatic proteinuriaSerum creatinine > 0.9 mg/dl – suspect intrinsic renal dseUltrasonography Intravenous pyelography if indicated, one-shot pyelogramCystoscopyRenal Biopsy (?)
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Which of the ff laboratory values is not normal during pregnancy and suggests an underlying renal disease:
A. Urinalysis: glucose +
B. mild right hydronephrosis on ultrasound
C. serum creatinine – 1.2 mg/dl
D. Urinalysis: protein - trace
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URINARY TRACT
INFECTION
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Acute Uncomplicated Cystitis is most likely in this case:
A. A 26-year-old G1P0 with fever, dysuria and flank pains
B. A 35-year-old G3P2 with hematuria and colicky right flank pain C. An 18-year-old G3P0020 with dysuria, urinary frequency & yellow- green vaginal discharge D. A 28-year-old G2P1 with dysuria and urinary urgency
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URINARY TRACT INFECTIONSASYMPTOMATIC BACTERIURIA
DIAGNOSISClean-voided specimen containing
>100,000 org/ml
MANAGEMENTNitrofurantoin (or Ampicillin, Amoxycillin,
Cephalosporin)If untreated, 25% develop acute Sxtic
infection.
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URINARY TRACT INFECTIONCYSTITIS AND URETHRITIS
DIAGNOSISSymptoms: dysuria urgency urinary frequencyLab: UA – pyuria, bacteriuria, hematuriaMANAGEMENTAmpicillin (or Sulfonamides,Nitrofurantoin,
Cephalosporin)
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URINARY TRACT INFECTION
ACUTE PYELONEPHRITISLeading cause of septic shock
during pregnancy (endotoxemia)More common after mid-pregnancyUslly right-sidedUslly an ascending infection from
lower UTI
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URINARY TRACT INFECTION
ACUTE PYELONEPHRITISDIAGNOSISSymptoms: fever shaking chills aching pain – lumbar areasP.E.: costovertebral angle tendernessLab: UA – leukocytes in clumps Urine culture – E. coli 77% Klebsiella pneumoniae
11% Enterobacter / Proteus 4%
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URINARY TRACT INFECTION
ACUTE PYELONEPHRITISMANAGEMENTHospitalizationUrine and blood culturesCBC, Serum creatinine, and electrolytes Rpt in 48 hrsChest Xray – if w/ dypnea or tachypneaMonitor V/S, urine output (FBC) IV crystalloid to establish UO to 30 ml/hr or >
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URINARY TRACT INFECTION
ACUTE PYELONEPHRITISMANAGEMENTAntimicrobial therapy Ampicillin + Gentamycin or Cephalosporins Intravenous Change to po when afebrile – 7-10 daysUrine culture 1-2 wks after completion of Rx 30-40% - recurrent infection
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Acute Uncomplicated Cystitis is most likely in this case:
A. A 26-year-old G1P0 with fever,
dysuria and flank pains
B. A 35-year-old G3P2 with hematuria and colicky right flank pain C. An 18-year-old G3P0020 with dysuria, urinary frequency & yellow- green vaginal discharge D. A 28-year-old G2P1 with dysuria and urinary urgency
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THYROID
DISORDERS
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NORMAL CHANGES IN PREGNANCY
Moderate thyroid enlargement
- glandular hpl and vascularityInc. uptake of radioiodine by
maternal thyroidInc. total serum thyroxine and
triiodothyronineInc. thyroid binding globulin
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HYPERTHYROIDISM
DIAGNOSIS: Tachycardia Thyromegaly Failure to gain weight despite
normal or increased food intake Marked elevation of plasma
thyroxine Elevated sleeping pulse rate exophthalmos
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GRAVE’S DISEASE
Most common cause of thyrotoxicosis in pregnancy
Autoimmune process associated with thyroid stimulating antibodies
Autoantibodies mimic thyrotropin and stimulate thyroid function
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A 37 yr old G2P1 12 weeks gestation presents for her first prenatal check-up. She had been diagnosed with Grave’s disease and maintained on propylthiouracil. Currently, she is euthyroid. Which of the ff statements is appropriate in counseling this patient:
A. She must discontinue PTU because it is associated with leukopenia.
B. Infants born to mothers on PTU may develop goiter and be clinically hypothyroid.
C. PTU does not cross the placenta.D. Thyroid storm is a common complication
in pregnant women with Graves disease.
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GRAVE’S DISEASE
MANAGEMENT Medical Propylthyouracil / Methimazole readily cross placenta & induce fetal hypothyroidism & goiter dose depends on total serum thyroxine level which should be in upper N range for preg
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A 37 yr old G2P1 12 weeks gestation presents for her first prenatal check-up. She had been diagnosed with Grave’s disease and maintained on propylthiouracil. Currently, she is euthyroid. Which of the ff statements is appropriate in counseling this patient:
A. She must discontinue PTU because it is associated with leukopenia.
B. Infants born to mothers on PTU may develop goiter and be clinically hypothyroid.
C. PTU does not cross the placenta.D. Thyroid storm is a common complication in
pregnant women with Graves disease.
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GRAVE’S DISEASE
MANAGEMENT Surgical – Subtotal Thyroidectomy after thyrotoxicosis is under control or pt
nearly euthyroid done in 2nd tri or early 3rd tri elective Indications: 1. women who cannot adhere to medical Rx 2. women in whom drug therapy is toxic
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GRAVE’S DISEASE
EFFECT ON PREGNANCY Higher incidence of preeclampsia heart failure
EFFECT ON NEONATE Neonatal thyrotoxicosis fr transplacental passage of
maternal thyroid stimulating ab
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HYPOTHYROIDISM
DIAGNOSIS Absence of normal rise in serum
thyroxine Increased thyrotropin level
Uncommon in pregnancy because associated with infertility
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HYPOTHYROIDISM
EFFECT ON PREGNANCY
Inc. incidence of abortion, SB, LBW
preeclampsia
placental abruption
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HYPOTHYROIDISM
EFFECT ON NEONATE Usually healthy Simple Colloid goiter w/o
hypothyroidism – no effect Severe hypothyroidism sec. to
maternal radioiodine Rx during pregn destruction of fetal thyroid cretinism
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HYPOTHYROIDISM
MANAGEMENT
Thyroid hormones
dose adjusted so that serum thyrotropin level is w/in N range
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Thyroid function tests showing an elevated serum thyrotropin, normal serum thyroxine and normal triiodothyronine in an asymptomatic woman at 14 weeks gestation is diagnostic of:
A. HypothyroidismB. HyperthyroidismC. Subclinical hypothyroidismD. Subclinical hyperthyroidism
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PUERPERAL
INFECTION
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10 days post cesarean section, a 23 yr old primipara complains of fever of 3 days duration associated with hypogastric pain. Temp – 40 C. Breasts are slightly tender. Pelvic exam shows tenderness over the area of the uterus and parametria. The most likely consideration is:
A. Breast engorgement B. Acute pyelonephritis C. Metritis with pelvic cellulitis D. Septic pelvic thrombophlebitis
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PUERPERAL MORBIDITY
temperature 38 C or higher, the temperature to occur on any 2 of the 1st 10 days postpartum, exclusive of the first 24 hrs, and to be taken by mouth by a standard technique at least 4x daily
JOINT COMMITTEE ON MATERNAL WELFARE
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Differential Diagnosis of Puerperal Fever
Genital tract infectionRespiratory complicationsPyelonephritisBreast EngorgementBacterial MastitisThrombophlebitisIncisional wound abscess
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Respiratory Complications
- seen within the 1st 24 hours
- in women delivered by cesarean section
- use of general anesthesia
AtelectasisAspiration pneumoniaBacterial pneumonia
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Pyelonephritis
SSx: bacteriuria / pyuria costovertebral angle tenderness spiking temperature
Clinical Dx: Urinalysis U/S
Rx: Antibiotics
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Breast Engorgement
15 % of all postpartum women
Fever rarely goes > 39 C
Fever – not longer than 24 hrs
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Thrombophlebitis
SSx:
painful swollen leg
calf / femoral angle tenderness
Mgt: Heparin
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Uterine Infection
Infection involving the decidua, myometrium and parametrial tissues
Metritis with Pelvic
Cellulitis
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Uterine Infection
The route of delivery is the single most significant risk factor for the development of postpartum uterine infection.
Incidence of Metritis:
ff C/S 13 – 50%
ff vaginal delivery 1.3 – 2.6%
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Risk Factors for Metritis
Prolonged laborProlonged membrane ruptureMultiple cervical examinationUse of internal fetal monitoringIntraamniotic infectionBacterial colonization of lower genital
tract Group B streptococcus Mycoplasma hominis
Chlamydia trachomatis Gardnerella vaginalis
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Bacteria Responsible for Genital Tract Infections
Aerobes Grp A, B and D streptococci Enterococcus Gram (-) bacteria – E. coli, Klebsiella and Proteus sp Staphylococcus aureus Gardnerella vaginalis
Anaerobes Peptococcus sp Clostridium sp Peptostreptococcus sp Fusobacterium sp Bacteroides fragilis Mobiluncus sp
Others Mycoplasma sp Chlamydia trachomatis Neisseria gonorrhea
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Clinical Course
FeverChillsAbdominal pain / tendernessFoul-smelling lochia B hemolytic streptococci – scanty odorless
lochia
Leukocytosis – 15,000 – 30,000/cu mm
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Treatment
BROAD SPECTRUM ANTIBIOTICSClindamycin + Gentamycin most widely studied regimen 90 – 97% efficacy
plus ampicillin – if enterococcal infection suspected
Aztreonam – if with renal insufficiency
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Causes of Persistent Fever Despite Antibiotic Rx
Wound infectionPeritonitisParametrial phlegmonPelvic abscessSeptic Thrombophlebitis
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Wound Infection
3 – 5% post C/S2% - with prophylactic antibioticsSSx: fever
erythema, wound discharges
Rx: antibiotics
surgical drainage
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Risk Factors for Wound Infection
ObesityDiabetesCorticosteroid therapyImmunosuppressionAnemiaPoor hemostasis with hematoma
formation
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Peritonitis
Route: lymphaticsSSx: severe abdominal pain bowel distension – ileusRx: antibiotics fluid and electrolyte replacement decompression surgery – bowel lesion uterine incisional necrosis
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Parametrial Phlegmon
Dx: parametrial induration
unilateral
uterus fixed on
one side
Rx: antibiotics
surgery – uterine incisional necrosis
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Pelvic Abscess
Dx: fluctuant broad ligament mass
Rx: Drainage
Colpotomy
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Septic Thrombophlebitis
Route: hematogenousPathogenesis:
placental site infection
thrombosed myometrial vsSSx: enigmatic fever
lower abd’l / flank pain
tender mass beyond the cornu
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Infections of Perineum, Vagina and Cervix
Rx: Drainage
Antibiotics
Analgesics
Foleybag catheter
Repair
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10 days post cesarean section, a 23 yr old primipara complains of fever of 3 days duration associated with hypogastric pain. Temp – 40 C. Breasts are slightly tender. Pelvic exam shows tenderness over the area of the uterus and parametria. The most likely consideration is:
A. Breast engorgement B. Acute pyelonephritis C. Metritis with pelvic cellulitis D. Septic pelvic thrombophlebitis
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