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The Mercer protocol is a common regimen for antibiotic prophylaxis in the context of preterm premature rupture of membranes (PPROM) during pregnancy, when immediate delivery is contraindicated due to known or suspected fetal lung immaturity. It was first described by Mercer et al. in 1997. [1]
Neonatal infections are infections of the neonate (newborn) acquired during prenatal development or within the first four weeks of life. [1] Neonatal infections may be contracted by mother to child transmission , in the birth canal during childbirth , or after birth. [ 2 ]
Mothers who are negative for the Kell 1 antigen develop antibodies after being exposed to red blood cells that are positive for Kell 1.Over half of the cases of hemolytic disease of the newborn owing the anti-Kell antibodies are caused by multiple blood transfusions, with the remainder due to a previous pregnancy with a Kell 1 positive baby.
In agar and broth dilution methods, bacteria are placed in multiple small tubes with different concentrations of antibiotics. [14] Whether a bacterium is sensitive or not is determined by visual inspection or automatic optical methods, after a period of incubation. [5] Broth dilution is considered the gold standard for phenotypic testing. [14]
Pregnancy increases the clearance of ampicillin by up to 50%, and a higher dose is thus needed to reach therapeutic levels. [25] [27] Ampicillin crosses the placenta and remains in the amniotic fluid at 50–100% of the concentration in maternal plasma; this can lead to high concentrations of ampicillin in the newborn. [27]
This scoring allows for the estimation of age in the range of 26 weeks to 44 weeks. The New Ballard Score is an extension of the above to include extremely pre-term babies , i.e., up to 20 weeks. The scoring relies on the intra-uterine changes that the fetus undergoes during its maturation.
Women who use opioids during pregnancy in a non-medical fashion are at a higher risk for premature birth, lower birth weight, still birth, specific birth defects, and withdrawal (neonatal abstinence syndrome). [11] Opioids can cross the placenta and the blood brain barrier to the fetus. [90] Opioid use is the main cause of neonatal abstinence ...