venous insufficiencies Flashcards
venous thromboembolism (DVT)
The collective condition of deep-vein thrombosis(DVT) and pulmonary embolism (PE)
dvt contributing factors
Immobility
Surgery
Trauma
Obesity
Age greater than 65
Spinal cord injury
Disorders of coagulation
Pregnancy
Oral contraceptives
dvt clinical manifestations
- Edema of affected limb
- Local swelling
- Redness of affected limb
- Tender, local induration
- Venous ulcers
venous ulcers s/s
Usually around ankle
Reddened/bluish
Edema often present
nursing interventions for dvt
meds for dvt
- Heparin: Monitor PTT.
- Warfarin (Coumadin): Monitor INR. (advoid vitamin K)
- Thrombolytic therapy: alteplase.
- Assess for bleeding and thrombocytopenia.
- Elevate affected extremity and apply warm, moist compresses
s/s of pe
- Shortness of breath
- Chest pain
- Tachycardia
- Anxiety (rapid feeling/dome)
- long bone fracture at risk for this
prevention of VTE
- Early mobilization
- Leg exercises
- Compression stockings
- Intermittent pneumatic compression devices
- Prophylactic subcutaneous heparin (5,000U q2 daily)
Lovenox (given once 30/40mg) 1 time shot in stomach)
A nurse is caring for a client who has chronic venous insufficiency and a prescription for thigh‑high compression
stockings. Which of the following actions should the nurse take?
a. Massage both legs firmly with lotion prior to applying the stockings.
b. Apply the stockings in the morning upon awakening and before getting out of bed.
c. Roll the stockings down to the knees to relieve discomfort on the legs.
d. Remove the stockings while out of bed for 1 hr, four times a day, to allow the legs to rest.
b
anticoagulants
Heparin Sodium
- Subq
- IV (higher risk)
Enoxaparin (Lovenox)
- Subq
Warfarin
- Oral
use for heparin and lovenox
- Modifies or inhibits clotting factors prevent clot formations.
- Lovenox prevents conversion of prothrombin to thrombin by inactivating coagulation enzymes.
disorders for use of heparin and lovenox
Evolving stroke
DVT
Cardiac catherization
MI
DIC
precuations for h&l
- Must be given subcutaneous or IV.
- Incompatible with many medications.
- Avoid NSAIDS, ASA, or salicylates
side effects of h&l
Hemorrhage
Heparin induced thrombocytopenia
Toxicity/overdose
heparin nursing interventions
- Monitor PTT every 4-6 hours for IV administration.
- Monitor for signs of bleeding
- Safety precautions to prevent bleeding.
- Administer subcutaneous in abdomen, 2 inches from umbilicus
- Do NOT aspirate or massage
- Rotate injection sites and assess for hematoma
reversal of heparin
Administer protamine sulfate for toxicity
warfarin
- Given orally
- Prevents the syntheses of coagulation factors VII, IX,X, and prothrombin
therapeutic use of warfarin (coumadin)
- Venous thrombosis
- Thrombus prevention for patients with afib or prosthetic heart valves
- Prevention of recurrent MI
- Transient ischemic attacks (TIAs)
warfarin (coumadin) contraindicated in patients with
- Not safe during pregnancy
- Thrombocytopenia
- Vitamin K deficiency
- Liver disease
- Alcohol abuse
- Food sources with high vitamin K may decrease the effects of medication
side effects of warfarin
Hemorrhage
Toxicity/Overdose
nursing interventions for warfarin
- Administer once daily.
- Monitor INR or PT.
- Teach patient that bleeding risk remains up to 5 days after therapy is discontinued.
- Teach patients to avoid NSAIDS and ASA. (too much blood thinning)
- Teach safety measures to prevent injury and bleeding.
vitamin k
antidote for toxicity
avoid eating or drinking
- Kale.
- Spinach.
- Brussels sprouts.
- Parsley.
- Collard greens.
- Mustard greens.
- Chard.
- Green tea.
A nurse is caring for a client who has a deep‑vein thrombosis (DVT) and has been taking unfractionated heparin for 1 week. Two days ago, the provider also prescribed warfarin. The client asks the nurse about receiving both heparin and warfarin at the same time. Which of the following statements should the nurse give?
a. “I will remind your provider that you are already receiving heparin.”
b. “Your laboratory findings indicated that two anticoagulants were needed.”
c. “It takes 3 to 4 days before the therapeutic effects of warfarin are achieved, and then the heparin can be discontinued.”
d. “Only one of these medications is being given to treat your deep‑vein thrombosis.”
c