AbstractVenous pressures of 50 infants were measured at the sagital sinus. The range of normal venous pressure was between 8 and 21cm. H2O. (Mean; 14.48cm. H2O). With the exception of an infant who had predominant left‐sided heart failure, venous pressures of infants in failure were markedly elevated, up to 33cm. H2O. Their venous pressures returned to normal as they recovered from heart failure following anti‐congestive therapy. In pneumonia or other respiratory diseases, however, venous pressure remained within normal range although clinical manifestations suggested the possibility of heart failure. The sagital sinus appears to be a reliable site for venous pressure measureme