Clotting Flashcards
A physiologic process in which blood is converted from a liquid to a semisolid gel
Clotting
When the problem extends to entire body; is usually the result of a significant hematologist event
Systemic Clotting
When the problem is localized; is usually a problem in a vein or an artery, either injury to a vessel or a clot within a vessel.
Localized Clotting
Clotting Process:
First Response is ___
Vasoconstriction
Clotting Process:
Second Response is ___
Platelet plug formation
Clotting Process
Third Response is ___
Thrombin—>Fibrinogen to form insoluble fibrin=stabilized clot
Clotting Process
Fourth response is ___
Breakdown of the clot
Factors that are activated by contact with collagen that has been exposed from damaged vessel wall
Intrinsic Factors
Damaged Tissue
Exposure of the tissue factor to extra vascular injuries
Extrinsic Factors
Process of breaking up a clot
Starts with plasminogen
Plasmin
Fibrin splits products
Fibrinolysis
Breaking up a clot
Prevention of a DVT
Early ambulation: easiest & most cost effective method to decrease VTE risk
PA of a DVT
Pain-calf or groin area
Swelling of the calf/leg or extremity
Compare the ext. with the other(measure)
Warmth and/or redness to compare
A test to see how blood moves through your arteries and veins
Venous Duplex Ultrasonography
measure changes in volume in different parts of the body to check for blood clots in the arms and legs
Plethysmograph
Inhibits clotting factors
Stops fibrin production
Prevents further clots
Prevents current clot from getting bigger
Existing clot slowly dissolves overtime
Heparin
Before administering Heparin____
Get a baseline serum aPTT, CBC and platelet count
Verify no bleeding disorders; active bleeding, or recent spinal surgery
2 RNs to verify dose administration
aPPT should be normal
Prevention & treatment of DVT/PE
Prohibits thrombin formation
Can be taken at home
Adjusted according to renal function
*Advise patient don’t rub the injection site, this could cause bruising. Don’t push air bubbles out of syringe, call HCP of any signs of bleeding
Enoxaparin (Lovenox)
May take 3 to 4 days to become therapeutic
Verify PT/INR prior to start
Typical 1st dose is 5mg
3 to 6 months following DVT
Verify PT/INR–teach patient the importance of having these checked on a regular basis*
Coumadin (Warfarin)
While taking Coumadin, the patient should maintain a diet of ____
Vitamin K
Placement of a filter in the inferior vena cava to “catch the clot” but allow blood flow back to the heart
Inferior Vena Cave Filter
When the venous thrombus dislodges and travels up the IVC to pulmonary arteries and capillaries
Pulmonary Embolism (PE)
5 P’s for Assessment of an Arterial Clot
- pain
- pallor (color)
- pulse or lack thereof
- poikilothermia (skin temperature)
- paresthesia (tingling or prickling)