petechiae
Medical term Routine Blood Collections
Tiny red pinpoint dots from bleeding under the skin. They may appear below a tourniquet and can point to a platelet or clotting problem.
Related terms
- plateletThrombocyte: a small cell fragment that sticks at a vessel injury to form a plug and helps clotting. Low…
- tourniquetBand tied 7 to 10 cm (3 to 4 in, about 4 to 5 finger widths) above the site to slow venous return so veins…
- order of drawCLSI venous tube sequence that stops additive carryover: blood cultures, sodium citrate, serum tubes…
- orthostatic hypotensionA drop in blood pressure on standing up that causes dizziness or fainting; have a patient rest before…
- osteomyelitisInfection of bone; a known complication of an infant heel puncture that reaches the calcaneus.
- palpationFeeling with the index fingertip to find a vein and judge its size, depth and direction; the thumb is not…
- phlebitisInflammation of a vein, most often from a clot (thrombophlebitis); a phlebitic vein is avoided for…
- phlebotomyDrawing blood, by venipuncture or skin puncture, for laboratory testing, donation or treatment.
- plantar surfaceThe sole of the foot. Infant heel punctures are made on its medial or lateral sides.
- plasmaThe liquid part of unclotted blood, separated by centrifuging a tube that contains an anticoagulant; it…
Study Routine Blood Collections