Later Development, Develop. Physiol., Dr. D. Penney




Table 3.10 - Average Physiological Values (+/- SD) for Normal Human Infants.

Age (hrs)10 +/- 5 (range 2-28 hrs)
Weight (kg) 3.2 +/- 0.4
pH 7.39 +/- 0.02
PCO2 (mm Hg) 33 +/- 2
Hematocrit (%) 54 +/- 6
O2 saturation (%), left atrium 97 +/- 1.6
Systemic arterial pressure (mm Hg) 56 +/- 8
Left atrial pressure (mm Hg) 2+/- 1.5
Right atrial pressure (mm Hg) 0+/- 1.4
O2 consumption (ml/kg min) 6.9 +/- 11
Left ventricular output (ml/kg min) 348 +/- 42
Right ventricular output (ml/kg min) 233 +/- 44
Pulmonary blood flow (mm/kg.min) 305 +/- 41
L to R shunt (%of LV output) 38 +/- 11
R to L shunt (%of RV output) 20 +/- 3


Note: The different outputs of the Right and Left Ventricles at this stage imply what about development of a complete "Series" circulation?


See Normal Reference Values


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