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9 Cards in this Set

  • Front
  • Back
How much pressure is needed to stop arterial and venous pressure?
• arterial: 80 mm Hg (amount of pressure to cause indentation on the skin)
• venous: 20 mm Hg
What are the steps of hemostasis?
• vasoconstriction
• platelet adhesion and aggregation
• thrombus formation
• fibrin clot
What is the life span of platelets?
10 days
What factor starts the intrinsic and extrinsic pathways?
• extrinsic: factor VII
• intrinsic: factor XII
What is a normal PT/PTT?
• normal PT: 11.5-13.5 sec
• normal PTT: 27-38 sec
How much will the hematocrit increase for every 1 unit of packed red blood cells (PRBC)?
increase by 3
Generally, at what Hgb/Hct do you transfuse?
• Hgb < 10
• Hct < 30
What drugs are given prior to transfusion to lessen the likelihood of a reaction?
• Tylenol 650 mg (antipyretic will stop the WBC cascade)
• Benadryl 25-50 mg IV (for antihistamine effects)
• sometimes can give steroids
What is the number one complication of transfusion reaction?
• airway compromise
• stop transfusion and give Solumedrol 1 gm IV