| Foot pulse oximeter perfusion index correlates with calf muscle perfusion measured by near-infrared spectroscopy in healthy neonates. | |
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MedLine Citation:
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PMID: 15915164 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: In critically ill neonates, peripheral perfusion and oxygenation assessment may provide indirect information on the circulatory failure of vital organs during circulatory shock. The development of pulse oximetry has recently made it possible to calculate the perfusion index (PI), obtained from the ratio between the pulsatile and nonpulsatile signals of absorbed light. The main goals of this study were: (1) to study foot PI; and (2) to evaluate the relationship between foot PI, obtained continuously by pulse oximetry, and a number of variables, i.e. blood flow (BF), oxygen delivery (DO(2)), oxygen consumption (VO(2)), and fractional oxygen extraction (FOE), measured indirectly by near-infrared spectroscopy (NIRS) on the calf in 43 healthy term neonates (weight 3474.6 +/- 466.9 g; gestational age 39.1 +/- 1.4 weeks). STUDY DESIGN: Calf BF, DO(2) and VO(2) were assessed by NIRS on short-lived venous and arterial occlusion maneuvers. PI was measured on the contralateral foot. RESULTS: Foot PI was 1.26 +/- 0.39. There was a positive correlation between foot PI and both calf BF (r = 0.32, p = 0.03) and DO(2) (r = 0.32, p = 0.03), but no correlation was found between foot PI and calf FOE and between foot PI and VO(2). CONCLUSIONS: In the neonatal intensive care unit, continuously measuring foot PI by pulse oximetry seems clinically more feasible for peripheral perfusion monitoring than spot measurements of the calf BF and/or VO(2) by indirect NIRS. |
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Authors:
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Patrizia Zaramella; Federica Freato; Valentina Quaresima; Marco Ferrari; Andrea Vianello; Diego Giongo; Lorena Conte; Lino Chiandetti |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of perinatology : official journal of the California Perinatal Association Volume: 25 ISSN: 0743-8346 ISO Abbreviation: J Perinatol Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-05-25 Completed Date: 2005-09-20 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8501884 Medline TA: J Perinatol Country: United States |
Other Details:
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Languages: eng Pagination: 417-22 Citation Subset: IM |
Affiliation:
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Department of Pediatrics, Neonatal Intensive Care Unit, University of Padova, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Foot
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blood supply* Humans Infant, Newborn / physiology* Leg / blood supply* Oximetry* Oxygen / metabolism Oxygen Consumption Spectroscopy, Near-Infrared* |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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