Term
| Thrombus (Stationary blood clot) etiology |
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Definition
Aggregated platelets, clotting factors, fibrin all adhere to vessel wall
Form in chambers of heart --> dysrhythmias & valve damage or replacement
Form in arterial or venous peripheral circulatory systems |
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Term
|
Definition
Dehydration
Drugs (Oral contraceptives, tobacco)
Slow blood flow
Increased turbulence
Damage to intima wall creating rough surface
Sedentary lifestyle/immobility |
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Term
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Definition
Arterial: may reduce flow (turbulence), distal ischemia
Venous: clot alters venous return --> impairs removal of metabolic waste, produces swelling (edema), if inflammation of veins occurs (phlebitis) causing a thrombus = thrombophlebitis |
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Term
| Thrombus clinical manifestations |
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Definition
Arterial: intermittent claudication, cool to touch, cyanotic, arterial ulcer (late)
Venous: may asymptomatic to life threatening (PE), calf or groin tenderness, swelling, increased skin temp., homan sign (10%) |
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Term
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Definition
Focus on prevention. Medical: oral or parenteral anticoagulants, drugs to block platelet aggregation, anti-embolic stockings, sequential compression devices (SCDs), early ambulation
Surgical: remove thrombus |
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Term
| Emoblus (dislodged thrombus) etiology |
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Definition
From heart: from aorta in cerebral artery (stroke), From right heart (pulmonary embolism)
From deep veins of pelvis & lower extremities - pulmonary embolism
Other sources: fat, air, amniotic fluid, neoplasms, bacterial |
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Term
| Embolus clinical manifestations |
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Definition
Cerebral vasculature: stroke
Pulmonary vasculature: sudden dyspnea, increased RR, chest pain, sudden death |
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Term
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Definition
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Term
| Blood vessel obstrusctions: Vasospasm |
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Definition
Sudden constriction of smooth muscle
Angina
Cause unknown
Environmental factors: cold & stress |
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Term
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Definition
Inflammation of an artery
Reddened, tender streaks on skin |
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Term
|
Definition
Inflamed veins
Reddened, tender streaks on skin |
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Term
| Blood vessel obstructions: mechanical compression |
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Definition
Trauma
Casts
Tight dressings |
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