1989
Response to Low Cardiac Output: Developmental Differences in Metabolism during Oxygen Deficit and Recovery in Lambs
Fahey J, Lister G. Response to Low Cardiac Output: Developmental Differences in Metabolism during Oxygen Deficit and Recovery in Lambs. Pediatric Research 1989, 26: 180-187. PMID: 2587117, DOI: 10.1203/00006450-198909000-00003.Peer-Reviewed Original ResearchConceptsLow cardiac outputCardiac outputAge groupsPulmonary artery blood pressureO2 deficitOld lambsO2 consumptionArtery blood pressureArterial lactate concentrationMin of recoveryRespective study periodsVenous HbBlood pressureFoley catheterRight atriumO2 saturationLactate concentrationStudy periodYoung lambsAge 2Potential mechanismsYoung animalsHypoxic stressComparable deficitsMetabolic demandsEffect of hemoglobin concentration on critical cardiac output and oxygen transport
Heusser F, Fahey JT, Lister G. Effect of hemoglobin concentration on critical cardiac output and oxygen transport. American Journal Of Physiology 1989, 256: h527-h532. PMID: 2916686, DOI: 10.1152/ajpheart.1989.256.2.h527.Peer-Reviewed Original ResearchConceptsSystemic O2 transportPeripheral O2 extractionCardiac outputO2 extractionFractional O2 extractionHemoglobin concentrationArterial blood lactate concentrationBase-line cardiac outputBalloon-tipped catheterPacked red cellsBlood lactate concentrationO2 transportPhysiological anaemiaExchange transfusionAcute reductionRight atriumVenous PO2Relative anemiaLactate concentrationOld lambsRed cellsAnemiaProgressive decreaseBase lineO2 consumption
1987
Postnatal changes in critical cardiac output and oxygen transport in conscious lambs
Fahey J, Lister G. Postnatal changes in critical cardiac output and oxygen transport in conscious lambs. American Journal Of Physiology 1987, 253: h100-h106. PMID: 3605355, DOI: 10.1152/ajpheart.1987.253.1.h100.Peer-Reviewed Original ResearchConceptsSystemic oxygen transportCardiac outputFractional oxygen extractionOxygen extractionOld lambsBalloon-tipped catheterSystemic oxygen deliveryBase-line valuesWk of ageIncremental inflationUnsedated lambsConscious lambsBlood pressureArterial lactateRight atriumAcute decreaseLactic acid accumulationOxygen deliveryPostnatal changesOxygen transportOxygen consumption