dermis
Medical term Routine Blood Collections
The skin layer under the epidermis that contains capillaries and nerves; a dermal (skin) puncture reaches it to collect capillary blood.
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Related terms
- capillaryThe smallest blood vessel, where oxygen, nutrients and wastes pass between blood and tissue. A skin puncture…
- collapsed veinA vein that flattens during the draw, often when a large tube or syringe pulls too hard on a small vein; use…
- crossmatchTesting done before a transfusion, except in emergencies, to check that donor blood is compatible with the…
- dehydrationA shortage of body water. Post-procedure care, as after a blood donation, includes encouraging fluids…
- dermal punctureCapillary collection: a lancet pierces the fingertip, or an infant's heel, to obtain a few drops of blood…
- diaphoresisHeavy sweating. With pallor, nausea or dizziness during a draw, it can warn of a vasovagal reaction and…
- diastolic pressureThe second, lower blood pressure reading: arterial pressure between beats, while the ventricles rest and fill.
- discard tubePlain tube drawn first when a winged set is used and sodium citrate is the first tube, so tubing air does…
- dyspneaDifficult or labored breathing (shortness of breath). A patient who becomes short of breath during…