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The change of postnatal pulmonary artery pressure was studied with doppler echocardiography and
phonocardiogram in 40 normal full term neonates before 6 hours, between 6 〜 24 hours, 24~48 hours,
48-72 hours, 72 hours 〜 7 days. The results of study were as follows: Pc-To interval (sec) decreased (0.
071 ±0.002, 0.062±0.003, 0.050±0.002, 0.037±0.007, 0.027±0.003) and AT/ET ratio increased (0.
24±0.01, 0.30±0.02, 0.40±0.03, 0.40±0.04,... |
