Để xác định chính xác bằng cách sử dụng chủ yếu Fick, ngoài các mẫu máu rất chính xác và kịp thời cung lượng tim, một oxy đo chính xác (O2) tiêu thụ xác định là cần thiết. O2 đo tiêu thụ là không cần thiết để tính toán số tiền tương đối của shuntin | CHAPTERS Cardiac catheterization equipment Oxygen consumption apparatus In order to determine cardiac output accurately using the Fick principal in addition to the very accurate and timely blood samples an accurately measured oxygen O2 consumption determination is necessary. The measured O2 consumption is not necessary for the calculation of relative amount of shunting since all values for the O2 consumption cancel each other out in the calculations of shunts which are based on differences in oxygen saturation in the blood. However for the accurate determination of the absolute value of the cardiac output actual pulmonary blood flow any vascular resistance or valve areas the actual O2 consumption must be measured. There are tables of normal values which are proportionate to body surface area however these do not tekeniio account the variable metabolic states of the patients. In most pediatric laboratories oxygen consumption is measured by means of a constant flow-throughhoodinconjunction with a gas analyzne formeasueingoxnoencontentof the ei iSt he a the MRM-2 OxygenConsumgCíon MoniiorZWstnrs Infttzmeuto dodessleo mini id consumption--dcscusceMizmers dsfali inCdapterCo. A sourceofcarbonchoxide o so dailosnflow dĩreitedca-hetossees cftecnsedin poOi-attic congerntatondicc cntZnteouaMonlnber ator iei oven in cnoee iaOoratnrlec whtsh nriticefoequt-renZrollcC sethetseo pcedominetetn. Even wden ths operator Ms itcSatc cet udd 0n ms cenz smeeismouut eferr fnshe esnous system no the non aCeẽ conge-ntai pcputaiioo of petieniie it is iiwayo aeoumed thet nny on whtah enters Ute 1x0 0 110 oen anOwilt eeaeh hosyn rentecrũ Os tion horesneneemallemount uSaticen booatsateophi c. On ties nedlctrisaoonpemOfr hdon-oidi cnebcn htxxsdo tCOoiiaaineausuied Ms thnosgdonsni floatmg bannop sethdlera. Each otOsterieation Saboratory hao a souice nd Cds net and a 0 of tnmsferrmg lhe sty en the Cineierizadon fobieadd inte tde galloon catheter. A disposable tank of CO2 gas which has a gas
