Objective:Discusses the normal premature infant brain blood stream parameter value as well as the different embryo age, the birth weight, the date age premature infant brain blood stream change rule. The multi-factor analysis premature infant brain blood stream change's influencing factor analysis, discusses the Doppler ultra acoustimeter to appraise in the premature infant brain damage the application value.Methods:Uses the American Phillips Doppler ultra sound detection meter dynamic determination normal premature infant and the existence pathology factor premature infant's brain blood stream parameter.Results:Along with date age's increase, normal group premature infant cerebrum median artery brain blood stream speed Vs, Vd by gradually increase quickly, after living,3rd day of normal premature infant's cerebrum median artery (MCA) systole peak value blood stream speed (Vs), average blood stream speed (mV) and 1st day of comparison difference remarkable (P<0.01); Drag index (RI) for non-age dependence factor, difference non-significance significance; The normal premature infant brain blood stream speed and the embryo age, the body weight present are related, groups separately carries on the comparison, its difference has the extremely significance significance (P<0.01); The pathology factor (hypoglycemia, red blood cell increase, high bilirubinemia sickness, hypotension, convulsion, suffocate, apnea, using phenobarbital, using machinery ventilation) to have the immediate influence to the premature infant brain blood stream, causes Vs, Vd to reduce, the systole blood stream speed and the diastole last stage blood stream speed's ratio (S/D) value advances, the RI value advances or reduces obviously, its difference has the extremely significance significance (P<0.01).Conclusions:colored Doppler supersonic dynamic determination premature infant brain blood stream change, regarding forecasts and prevents the premature infant brain damage to have certain clinical value. |