Continuous observations of the arterial oxygen saturation at rest and during exercise in congenital heart disease

Montgomery, George E.; Wood, Earl H.; Burchell, Howard B.; Dry, Thomas J.; Parker, Robert L.; Helmholz, Henry F.

doi:10.1016/0002-8703(48)90234-8

Cited by 11 publications

(3 citation statements)

References 2 publications

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“…Himwich and Barr (55) (57). Experiments of Montgomery and his associates (58), in which normal persons 9 to 60 years of age walked on a treadmill at 1.7 M.P.H., showed negligible changes in arterial saturation as measured by the ear oximeter; values ranged from -2.0 to 0 percentage points, with a mean value of 0.3 percentage points. Our own experience, 831 using the ear oximeter to determine arterial saturation in healthy children and adults during moderate exercise on the treadmill, leads us to the conclusion that while arterial saturation may decrease by one or two percentage points during the first minute or so of exercise it rises to the resting level or above this when adequate pulmonary and circulatory adaptations are made to meet the increased demand for oxygen.…”

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confidence: 99%

Arterial Blood Gases and Acid-Base Balance in Normal Children 1

Cassels¹,

Morse²

1953

J. Clin. Invest.

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Robinson (1) studied the effect of age on the arterial blood gases and the acid-base balance of normal males from 5 to 91 years of age. In addition to the well known increase in oxygen combining capacity which occurs during childhood and adolescence, Robinson found moderately lower mean values for hemoglobin saturation in adults above 40 years of age, and slightly higher mean values for arterial CO2 content and CO2 tension in adults as compared with children. In the case of the alkaline reserve, mean values varied between 21.2 and 22.2 millimols per liter for all age groups except the youngest. Robinson found unusually low values of alkaline reserve in children 4 to 6 years of age. The present study was undertaken to supplement the work of Robinson in the years of childhood and adolescence, in order to establish more firmly the range of variation that may be expected in healthy children, and to provide a basis for the study of arterial blood gases and acid base balance in disease. MATERIALThe subjects of the study were drawn from three sources:1. Children of 10 years and younger were of both sexes. They had been carefully selected from patients at Bobs Roberts Memorial Hospital as representing physiologically normal states at the time the blood samples were drawn. Breakfast was withheld and the child was kept in bed until after the sample was taken.2. Subjects between 11 and 17 years of age were normal healthy boys 8 who came to the laboratory to participate in various tests for physical fitness. The results of most of these tests have been described earlier (2-5).

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confidence: 99%

Arterial Blood Gases and Acid-Base Balance in Normal Children 1

Cassels¹,

Morse²

1953

J. Clin. Invest.

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“…Evidence in the literature concerning the effect of exercise on arterial saturation is conflicting, but all authors agree that any effect in a normal, healthy adult will be small unless the exercise is severe and fatiguing. Him (58), in which normal persons 9 to 60 years of age walked on a treadmill at 1.7 M.P.H., showed negligible changes in arterial saturation as measured by the ear oximeter; values ranged from -2.0 to 0 percentage points, with a mean value of 0.3 percentage points. Our own experience, using the ear oximeter to determine arterial saturation in healthy children and adults during moderate exercise on the treadmill, leads us to the conclusion that while arterial saturation may decrease by one or two percentage points during the first minute or so of exercise it rises to the resting level or above this when adequate pulmonary and circulatory adaptations are made to meet the increased demand for oxygen.…”

Section: Discussionmentioning

confidence: 94%

1 Arterial Blood Gases and Acid–Base Balance

2008

Clinical Tests of Respiratory Function

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“…Evidence in the literature concerning the effect of exercise on arterial saturation is conflicting, but all authors agree that any effect in a normal, healthy adult will be small unless the exercise is severe and fatiguing. (58), in which normal persons 9 to 60 years of age walked on a treadmill at 1.7 M.P.H., showed negligible changes in arterial saturation as measured by the ear oximeter; values ranged from -2.0 to 0 percentage points, with a mean value of 0.3 percentage points. Our own experience, using the ear oximeter to determine arterial saturation in healthy children and adults during moderate exercise on the treadmill, leads us to the conclusion that while arterial saturation may decrease by one or two percentage points during the first minute or so of exercise it rises to the resting level or above this when adequate pulmonary and circulatory adaptations are made to meet the increased demand for oxygen.…”

Section: -Chicago-mentioning

confidence: 92%

Pulmonary Gas Exchange

2008

Clinical Tests of Respiratory Function

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Continuous observations of the arterial oxygen saturation at rest and during exercise in congenital heart disease

Cited by 11 publications

References 2 publications

Arterial Blood Gases and Acid-Base Balance in Normal Children 1

Arterial Blood Gases and Acid-Base Balance in Normal Children 1

1 Arterial Blood Gases and Acid–Base Balance

Pulmonary Gas Exchange

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