“Capillary refill”的意思、由来-开放百科全书

Capillary refill time (CRT) is defined as the time taken for color to return to an external capillary bed after pressure is applied to cause blanching.^[1] It can be measured by holding a hand higher than heart-level and pressing the soft pad of a finger or fingernail until it turns white, then taking note of the time needed for the color to return once pressure is released.^[2] Normal capillary refill time is usually less than 2 seconds. In newborn infants, capillary refill time can be measured by pressing on the sternum for five seconds with a finger or thumb, and noting the time needed for the color to return once the pressure is released. The upper normal limit for capillary refill in newborns is 3 seconds.^[3] Capillary refill time can also be assessed in animals by pressing on their gums as opposed to the sternum which is generally covered with fur or inaccessible.

A prolonged capillary refill time may be a sign of shock and can also indicate dehydration and decreased peripheral perfusion.^[4] Prolonged capillary refill time may also suggest peripheral artery disease.^[2] It is generally accepted that the test is affected by many different external factors and therefore should not be relied upon as a universal diagnostic measure.^[1]

See also

References

1. ^¹{{cite journal|last=King|first=D|author2=Morton, R |author3=Bevan, C |title=How to use capillary refill time|journal=Archives of Disease in Childhood: Education and Practice Edition|date=Nov 13, 2013|pmid=24227793|doi=10.1136/archdischild-2013-305198|volume=99|issue=3|pages=111–116}}
2. ^¹Capillary nail refill test
3. ^{{cite journal |author1=Krzysztof S Strozik |author2=Clarissa H Pieper |author3=Jacques Roller |title=Capillary refilling time in newborn babies: normal values |issue=3 | date=1997-01-13 | doi=10.1136/fn.76.3.F193 | url= http://fn.bmj.com/content/76/3/F193.abstract | volume=76 | journal=Archives of Disease in Childhood: Fetal and Neonatal Edition | pages=F193–F196|pmc=1720653 }}
4. ^{{ cite web| url=https://www.nlm.nih.gov/medlineplus/ency/article/003394.htm| author= David C. Dugdale, III, MD| title=Capillary nail refill test|date=2009-05-07 |accessdate=2010-11-27}}