we measured lobar hypoxic pulmonary vasoconstriction ( hpv ) caused by both absorption atelectasis ( aa ) and nitrogen ventilation ( n2 ) during conditions of a ) open chest and positive-pressure ventilation ( ppv ) , b ) closed chest ad ppv , and c ) closed chest and spontaneous ventilation ( sv ) and compared conditions a with b and b with c .
C0004144
atelectasis
C0817096
chest