our data suggest that ( 1 ) placenta previa patients are at increased risk of intrauterine growth retardation and adverse pregnancy outcomes , ( 2 ) placenta previa patients with normal s : d ratios are at no greater risk of adverse outcomes than are controls , ( 3 ) when the s : d ratio is elevated in placenta previa patients , it is more likely to be associated with adverse pregnancy outcomes , and ( 4 ) placenta previa patients without growth failure have a higher s : d ratio than do those with normally implanted placentas .
C0032046
placenta previa
C0032043
placentas