To determine the relationship between sonographic grade of intracranial hemorrhage (ICH) and severity of hyaline membrane disease(HMD) on plain radiography. Patients were grouped into three : Group I included 41 patients with both ICH and HMD,
Group 2
included 44 patients with ICH alone, and Group 3 51 patients with HMD alone.
Sonographic grade was categorized into four : 1) germinal matrix hemorrhage. 2) intraventricular hemorrhage (IVH). 3) IVH with hydrocephalus, and 4) intraparenchymal hemorrhage. Plain radiographic severity of HMD was classified as 'mild',
'moderate',
and 'severe' according to definability of cardiac margin, extent and persistence of airbronchogram, and granularity of the lungs on plain film. Objectivity to the utilization of the criteria for HMD severity were established through correlation
of
HMD
severity with PaO2 and PAGAR score and the criteria were found to be reasonable.
Correlations between (?) grade according to birth weight (BW0 and gestational age (GA) in Group 1 and 2.2) HMD severity for Groups 1 and 3, 3) ICH grade and HMD severity in Groups 1, were made. The results showed that ICH grade was higher in
Group
1
than in Group 2 regardless of BW or GA. HMD was more severe in Group 1 than in Group 3 with increased proportion of Group 1 with increased HMD severity. And HMD severity correlated well with ICH grade with Spearman's rank correlation coefficient
of
0.60(t=4.68, d.f.=39, p<0.05). HMD severity contributed to the occurrence of ICH and there was a significant direct relationship between plain radiographic severity of HMD and sonographic grade of ICH
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