IUI and infections in pregnancy Flashcards
(110 cards)
Hutchinson’s triad (from congenital syphylis)
- ocular interstitial keratitis
- 8th nerve deafness
- Hutchinson’s teeth (murberry molars and Hutchinson’s incisors)
The cdc and USPSTF recommend screening for HBV, HCV:
-All adults age 18-79
-Pregnant people, each pregnancy
The incidence of UTI (pyelonephritis, cystitis) asymptomatic bacteriuria in pregnancy
5-10 %
Untreated asymptomatic UTI has 25% risk of pyelonephritis and 2.5% with treatment
وفي رواية:
Pyelonephritis develops in 30-40% w/o treatment and in 3-4% with treatment
Leading bacterial killing in neonate is
GBS
If term 1-2% colonized develops infection, mortality 5%
If preterm, 8% of colonised develop infection, mortality rate 25 %
Complications of pyelonephritis in pregnancy
Sepsis
Cunningham’s syndrome (ARDS)
50% of women who are colonized with GBS will transmit the bacteria to their newborns.
In the absence of intrapartum antibiotic prophylaxis, 1–2% of those newborns will develop GBS EOD.
ACOG recommends performing universal GBS screening between
36 0/7 and 37 6/7 weeks of gestation.
Regardless of planned mode of birth, all pregnant women should undergo antepartum screening for GBS unless
unless intrapartum antibiotic prophylaxis for GBS is indicated because of GBS bacteriuria during the pregnancy or because of a history of a previous GBS-infected newborn.
If the prenatal GBS culture result is unknown when labor starts, intrapartum antibiotic prophylaxis is indicated for women who have risk factors for GBS EOD.
At-risk women include those who present in labor with a substantial risk of preterm birth, who have preterm prelabor rupture of membranes (PPROM) or rupture of membranes for 18 or more hours at term, or who present with intrapartum fever (temperature 100.4°F [38°C] or higher).
If intraamniotic infection is suspected, broad-spectrum antibiotic therapy that provides coverage for poly-microbial infections as well as GBS should replace the antibiotic that provides coverage for GBS prophylaxis specifically.
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GBS prophylaxis in case of penicillin allergy/anaphylaxis
First-generation cephalosporins (i.e., cefazolin) are recommended for women whose reported penicillin allergy indicates a low risk of anaphylaxis or is of uncertain severity. For women with a high risk of anaphylaxis, clindamycin is the recommended alternative to penicillin only if the GBS isolate is known to be susceptible to clindamycin.
the only pharmacokinetically and microbiologically validated option for intrapartum antibiotic prophylaxis in women who report a high-risk penicillin allergy and whose GBS isolate is not susceptible to clindamycin.
Intravenous vancomycin, The dosage for intrapartum GBS prophylaxis should be based on weight and baseline renal function (20 mg/kg intravenously every 8 hours, with a maximum of 2 g per single dose.)
the most common perinatal infection in the developed world.
(CMV) is a ubiquitous DNA herpes virus that eventually infects most humans. The virus is secreted into all body fluids, and person-to-person contact.
Naturally acquired immunity during pregnancy results in a 70-percent risk reduction of congenital CMV infection in future pregnancies
Transmission rates for primary infection of CMV are – TO – percent in the 1st trimester, –to– percent in the 2nd, and – to – percent in the 3rd trimester
(ACOG, 2017; Picone, 2017).
Transmission rates for primary infection are 30 to 36 percent in the 1st trimester, 34 to 40 percent in the 2nd, and 40 to 72 percent in the 3rd trimester
(ACOG, 2017; Picone, 2017).
CMV infection. Congenital infection is a
syndrome that may include
growth restriction, microcephaly, intracranial calcifications”Periventricular”, chorioretinitis, mental and motor retardation, sensorineural deficits, hepatosplenomegaly, jaundice, hemolytic anemia, and thrombocytopenic purpura
Routine prenatal CMV serological screening is currently not recommended by the Society for Maternal–Fetal Medicine (2016).
Pregnant women should be tested for CMV if they present with a mononucleosis-like illness or if congenital infection is suspected based on
abnormal sonographic findings.
fetal abnormalities associated with CMV infection may be seen antenatal with US, CT, MRI INCLUDES:
Findings include microcephaly, ventriculomegaly, and cerebral calcifications; ascites, hepatomegaly, splenomegaly, and hyperechoic bowel; hydrops; and
oligohydramnios (Society for MFM 2016).
the gold standard for the diagnosis of CMV fetal infection.
CMV nucleic acid amplification testing (NAAT) of amniotic fluid (Sensitivity is highest when
amniocentesis is performed at least 6 weeks after maternal infection and after 21
weeks’ gestation) A negative result from amniotic
fluid polymerase chain reaction (PCR) testing does not exclude fetal infection and
may need to be repeated if suspicion for fetal infection is high.
Varicella–zoster virus VZV Mortality is predominately due to
VZV pneumonia, which is thought to be more
severe during adulthood and particularly in pregnancy, 2 to 5 % of infected pregnant women develop
pneumonitis. Risk factors for VZV pneumonia include
smoking and having more than 100 cutaneous lesions
congenital varicella syndrome. Some features include
chorioretinitis, microphthalmia, cerebral cortical atrophy, growth restriction, hydronephrosis, limb
hypoplasia, and cicatricial skin lesions
If the fetus/neonate is exposed to active infection just before or during delivery, and therefore before maternal antibody has been formed, the newborn
faces a serious threat. Attack rates range from 25 to 50%, and mortality rates approach 30%.
neonates develop disseminated visceral
and CNS disease, which is commonly fatal. For this reason, (VZIG) should be administered to neonates born to mothers who have clinical evidence of varicella 5 days before and up to 2 days after delivery.
Maternal varicella Diagnosis
is usually diagnosed clinically. Infection may be confirmed by NAAT of vesicular fluid. The virus may also be isolated by scraping the vesicle base during primary infection and performing a Tzanck smear,
tissue culture, or direct fluorescent antibody testing.
Varicella Management, when to give Varicella Immunoglobulins ?
Although best given within 96 hours of exposure, its use is approved for up to 10 days to prevent or attenuate varicella infection. + Acyclovir to be started 24 hours after the onset of Rash.
In women with known history of varicella, VariZIG is not indicated.
VZIG to the baby»_space; if the fetus was delivered within 5 days of infection.
management of influenza virus?/ what are the available option of antivirals?
Neuraminidase inhibitors are highly effective for the treatment of early influenza A and B. include ORAL oseltamivir (Tamiflu), INHALER zanamivir (Relenza); IV peramivir (Rapivab).