Use of Capillary Blood in Measurement of Arterial Po2

Macintyre, James G.; Norman, John; Smith, George H.

doi:10.1136/bmj.3.5619.640

Cited by 38 publications

(15 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results from correctly warmed sites may be unreliable, especially where the peripheral circulation is poor, though the ear lobe is a more reliable site than the thumb (Koch, 1965(Koch, , 1968Laughlin, McDonald, and Bedell, 1964;MacIntyre, Norman, and Smith, 1968;Worth, 1965). Satisfactory pH, Pco2, and base deficit readings in normal newborns cannot be obtained from capillary blood at birth.…”

Section: Resultsmentioning

confidence: 99%

Comparison of arterial and arterialized capillary blood in infants with respiratory distress.

Banister¹

1969

Archives of Disease in Childhood

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Comparison of arterial and arterialized capillary blood in infants with respiratory distress.

Banister¹

1969

Archives of Disease in Childhood

View full text Add to dashboard Cite

“…The validity of this method was supported on the basis of simple comparison [2], lack of significant difference [1,4,8,12], or presence of significant correlations between arterialized earlobe and arterial blood PO 2 and PCO 2 [3,[5][6][7][8]. Recently, PITKIN et al [10] addressed the same question, using the method of BLAND and ALTMAN [11] to compare blood gas values from arterialized earlobe and arterial samples.…”

Section: Discussionmentioning

confidence: 99%

“…This method, described many years ago [1], is a simple and safe procedure which can be performed by medical technicians. Comparing values for partial pressure of oxygen (PO 2 ) and of carbon dioxide (PCO 2 ) from arterialized earlobe blood samples with arterial blood samples, several authors have concluded that the earlobe site was suitable for routine clinical purposes [1][2][3][4][5][6][7][8][9]. This idea was again advocated by two recent studies.…”

mentioning

confidence: 90%

Differences in PO2 and PCO2 between arterial and arterialized earlobe samples

Sauty¹,

Uldry²,

Debétaz³

et al. 1996

Eur Respir J

View full text Add to dashboard Cite

Differences in PO 2 and PCO 2 between arterial and arterialized earlobe samples. A. Sauty, C. Uldry, L-F. Debétaz, P. Leuenberger, J-W. Fitting. ©ERS Journals Ltd 1996. ABSTRACT: Arterialized ear lobe blood samples have been described as adequate to gauge gas exchange in acute and chronically ill patients. It is a safe procedure, usually performed by medical technicians. We have conducted a prospective study to verify the validity of this method.One hundred and fifteen consecutive adult patients were studied. Blood samples were drawn simultaneously from arterialized earlobe and radial artery. Values of partial pressure of oxygen (PO 2 ) and of carbon dioxide (PCO 2 ) were measured by means of blood gas electrodes.The correlation coefficients between the two samples were 0.928 for PO 2 and 0.957 for PCO 2 values. In spite of a highly significant correlation, the limits of agreement between the two methods were wide for PO 2 . Earlobe values of PO 2 were usually lower than arterial values, with larger differences in the range of normal arterial PO 2 . On the other hand, the error and the limits of agreement were smaller for PCO 2 .We conclude that, in adult patients, arterialized earlobe blood PO 2 is not a reliable mirror of arterial PO 2 . Eur Respir J., 1996, 9: 186-189 Blood gas values can be measured using arterialized earlobe blood samples, instead of arterial samples, in order to gauge pulmonary gas exchange in acute or chronically ill patients. This method, described many years ago [1], is a simple and safe procedure which can be performed by medical technicians. Comparing values for partial pressure of oxygen (PO 2 ) and of carbon dioxide (PCO 2 ) from arterialized earlobe blood samples with arterial blood samples, several authors have concluded that the earlobe site was suitable for routine clinical purposes [1][2][3][4][5][6][7][8][9]. This idea was again advocated by two recent studies. PITKIN et al. [10] compared PO 2 , PCO 2 , and pH values from 40 blood samples simultaneously drawn from the radial artery and hyperaemic earlobe. Using the method of BLAND and ALTMAN [11] for the assessment of agreement, these authors also concluded that arterialized earlobe blood gas values were accurate enough to be used in clinical application. Finally, DAR et al. [12] reported that earlobe sampling was significantly less painful than arterial sampling in 55 patients, whereas blood gas values were not different with the two techniques.For several years, the arterialized earlobe technique has been the standard practice for measuring arterial blood gases in our pulmonary function laboratory. However, in some instances, we have noticed a marked discrepancy between arterial and relatively lower arterialized earlobe values of PO 2 . We, therefore, conducted a prospective study to compare arterial and arterialized earlobe blood samples in 115 consecutive adult patients. Material and methodsOur study group included 115 consecutive adult patients investigated in our pulmonary function laboratory for various conditions. No...

show abstract

“…Hg, led to an investigation into the validity of this method. A satisfactory correlation between capillary and arterial oxygen values has been shown in adults (Laughlin, McDonald and Bedell, 1964;McIntyre, Norman, and Smith 1968), but no information was available until recently (Koch and Wendel, 1967) with respect to the newborn infant.…”

mentioning

confidence: 99%

Reliability of Oxygen Tension Measurements on Arterialized Capillary Blood in the Newborn

Mountain¹,

Campbell²

1970

Archives of Disease in Childhood

View full text Add to dashboard Cite

Samples of blood were obtained from newborn infants simultaneously from an umbilical artery catheter, an `arterialized' heel, an unprepared heel, and from an `arterialized' thumb. The correlation between the arterial oxygen tension with that of capillary blood, whether arterialized or not, was poor. Thus it was concluded that arterial blood is the only satisfactory sample for the measurement of oxygen tension in the newborn.

show abstract

Use of Capillary Blood in Measurement of Arterial Po2

Cited by 38 publications

References 9 publications

Comparison of arterial and arterialized capillary blood in infants with respiratory distress.

Comparison of arterial and arterialized capillary blood in infants with respiratory distress.

Differences in PO2 and PCO2 between arterial and arterialized earlobe samples

Reliability of Oxygen Tension Measurements on Arterialized Capillary Blood in the Newborn

Contact Info

Product

Resources

About