Home Glossary Letter S syncope
syncope
Medical term Routine Blood Collections
Fainting: brief loss of consciousness when too little blood reaches the brain. If it starts during a draw, stop, remove the needle and keep the patient from falling.
Related terms serum separator tube Gold or red-gray (tiger) top. Its clot activator speeds clotting; when the tube is spun, its gel moves to… small-volume tube Standard-size tube with a weaker vacuum that draws less blood; used for children and fragile veins to reduce… sodium citrate Anticoagulant that binds calcium, used in light blue-top tubes for coagulation tests. Fill to the line to… sphygmomanometer A blood pressure cuff with a gauge. It can serve as a tourniquet when inflated to just below the patient's… syringe Barrel and plunger used with a needle or winged set, often for small or fragile veins; a 1 to 5 mL syringe… systemic circulation Blood flow from the left ventricle through the arteries to the body's tissues and back through the veins to… systolic pressure The upper blood pressure number: the peak pressure in the arteries while the ventricles contract. thrombin Clotting enzyme that turns fibrinogen into fibrin. Orange-top tubes use a thrombin-based clot activator to…
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syn-, sym-syringe