Med-surge 2 practice questions Flashcards
Decreased perfusion to the peripheral tissues
ischemia
Key part of management
Education
Proper nutrition, smoking cessation, & exercise are important
health promotion behaviors
Ischemic muscle pain caused by a constant level of exercise (buildup of lactic acid from anaerobic metabolism), • Resolves within 10 minutes or less with rest, and Reproducible
Intermittent claudication (classic symptom)
Numbness or tingling in toes or feet from nerve tissue ischemia; Neuropathy causes severe shooting or burning pain; Produces loss of pressure and deep pain sensations from reduced blood flow; Injuries often go unnoticed by patient
Paresthesia
Thin, shiny, taut skin; Loss of hair on lower legs; Diminished or absent pedal, popliteal, or femoral pulses; Pallor (blanching) of foot with leg elevation; Reactive hyperemia (redness) of foot develops with dependent position (dependent rubor)
Reduced blood flow to limb
As disease progresses; Occurs in feet or toes; Aggravated by limb elevation; Occurs from insufficient blood flow to distal tissues; Occurs more often at night because cardiac output tends to drop during sleep & limbs are at level of the heart; Pain relief by gravity, dangling leg over side of bed or sleeping in a chair
Pain at rest
is condition characterized by chronic ischemic rest pain lasting >2 weeks, nonhealing arterial leg ulcers, or gangrene of leg from PAD. Patients with PAD who have diabetes, HF, & HX of a stroke are at increased risk of CLI.
Critical limb ischemia (CLI)
- Atrophy of skin and underlying muscles
- Delayed healing
- Wound infection
- Tissue Necrosis
- Arterial (ischemic) ulcers most often occur over bony prominences on toes, feet & lower legs
- Most serious: Nonhealing arterial ulcers and gangrene (collateral circulation may prevent gangrene)
- May result in amputation (If adequate blood flow is not restored & if severe infection occurs; Indicated with uncontrolled pain & spreading infection)
- Peripheral Arterial Disease of Lower Extremities: Diagnostic Studies and Tables 37-2, 37-3, and 31-7 in the textbook
Complications - Prolonged ischemia leads to:
• Segmental BPs are obtained using Doppler ultrasound & a sphygmomanometer at the thigh, below the knee, & at ankle level while patient is supine.
A drop in segmental BP of >30 mm Hg suggests PAD.
• Angiography & magnetic resonance angiography show the location & extend of:
PAD
Reduce sodium; Dash Diet will:
Control BP
Essential to reduce risk for CVD events, PAD progression, & death
Tobacco cessation
Diabetes is major risk factor for PAD & increases risk for amputation
Hemoglobin A1C<7.0% for diabetics
Statins (e.g., simvastatin [Zocor]) & a fibric acid derivative (gemfibrozil [Lopid])
Aggressive treatment of hyperlipidemia-diet and statins