the efficiency of spontaneous ventilation during halothane anaesthesia was investigated in 18 infants and children with congenital heart disease presenting either with hyperperfusion and left-to-right shunt ( group lr : n = 10 , body weight 3.7-16 kg ) or with hypoperfusion and right-to-left shunt ( group rl : n = 8 , body weight 3.4-12 kg ) .
C0021270
infants
C0008059
children