ABSTRACT

Intheabsenceofhydrops,directmeasurementoffetalbloodparametersisthemostaccurate methodofdeterminingseverityofhemolyticdisease,beingmoreaccuratethanamnioticfluid .:iOD450measurementsandultrasonographicassessments.Thelattertwoprocedures,however, pluspasthistoryandmaternalantibodytiters,indicatethefetusatriskwhorequiresafetal blood-samplingprocedure.