نتایج جستجو برای: invasive procedures
تعداد نتایج: 384508 فیلتر نتایج به سال:
Risk of birth defects in multiple pregnancies Frequency of monozygotic twins remains constant, while dizygotic twins become more frequent as maternal age increases. In these cases the risk that at least one fetus is aneuploid will be twice the maternal age risk for a singleton while the probability of both fetuses being involved is minimal. Dizygotic twins have a six fold increased risk that on...
OBJECTIVE To define the incidence, risk factors, and characteristics of bloodstream infections (BSIs) after invasive nonsurgical cardiologic procedures (ICPs). METHODS Retrospective case-control study; multivariate analysis. RESULTS Between January 1991 and December 1998, 22 006 ICPs were performed in our hospital and 25 BSIs were documented within 72 hours after ICP. Overall incidence of b...
BACKGROUND Second trimester amniocentesis has been associated with an excess of perinatal lung function abnormalities. Early amniocentesis might have a similar adverse effect, as could other invasive investigations carried out in the first trimester. METHODS Plethysmographic measurements of thoracic gas volume (TGV) and airway resistance (Raw), from which specific conductance (sGaw) was calcu...
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