Study Notes on Brachial Artery and Peripheral Arterial Disease

Brachial Artery & Blood Pressure Measurement

  • Blood pressure measured at the brachial artery in the arm (systolic).

  • Blood pressure at the ankle measured at the posterior tibial artery.

Ankle Brachial Index (ABI)

  • Comparison of blood pressure at the ankle to that at the arm.

  • Normal ABI value: 1 or more.

  • Low ABI (<0.9) indicates peripheral arterial disease (PAD).

    • Example: Arm BP = 120, Ankle BP = 100 → ABI = 0.83 (indicative of PAD).

ABI Values Interpretation

  • >1.4: Higher BP at ankle (possible stiff arteries).

  • 1.0 - 1.4: Normal.

  • 0.9 - 1.0: Acceptable.

  • 0.8 - 0.9: Mild arterial disease.

  • 0.5 - 0.8: Moderate arterial disease.

  • <0.5: Severe arterial disease.

Symptoms of Peripheral Arterial Disease

  • Intermittent claudication (pain while walking).

  • Weak or absent pulse in the affected limbs.

  • Skin changes: shiny, tight skin, no hair, cold extremities.

  • Nail changes: thickened toenails.

Arterial vs. Venous Disease

  • Arterial Disease:

    • Weak pulse, pale limb, ulcer on toes, claudication.

  • Venous Disease:

    • Normal pulse, edema, ulcers around ankle, aching pain.

Treatments for Peripheral Arterial Disease

  • Lifestyle changes: stop smoking, exercise.

  • Medications: antiplatelet (aspirin, clopidogrel), and cilostazol for claudication.

  • Surgical interventions: angioplasty with stent, bypass surgeries.

Diagnosis of DVT

  • Signs: unilateral edema, pain, redness, warmth in the affected limb.

  • Risk factors: immobility, trauma, coagulopathy, obesity, dehydration.

DVT Treatment

  • Anticoagulants (heparin, enoxaparin) to prevent clot formation.

  • Thrombolytics (alteplase, TPA) to dissolve existing clots.

  • Prophylaxis: elastic stockings, sequential compression devices, early ambulation.

Brachial Artery & Blood Pressure Measurement- Blood pressure measured at the brachial artery in the arm (systolic).- Blood pressure at the ankle measured at the posterior tibial artery.## Ankle Brachial Index (ABI)- Comparison of blood pressure at the ankle to that at the arm.- Normal ABI value: 1 or more.- Low ABI (<0.9) indicates peripheral arterial disease (PAD).- Example: Arm BP=100100 Ankle

→\rightarrow ABI=0.830.83 (indicative of PAD).## ABI Values Interpretation- >1.4: Higher BP at ankle (possible stiff arteries).- 1.01.0 - 1.41.4: Normal.- 0.90.9 - 1.01.0: Acceptable.- 0.80.8 - 0.90.9: Mild arterial disease.- 0.50.5 - 0.80.8: Moderate arterial disease.- <0.5: Severe arterial disease.## Symptoms of Peripheral Arterial Disease- Intermittent claudication (pain while walking).- Weak or absent pulse in the affected limbs.- Numbness or weakness in the legs.- Sores on the toes, feet, or legs that won't heal.- A change in the color of the legs.- Hair loss or slower hair growth on the legs and feet.- Skin changes: shiny, tight skin, no hair, cold extremities.- Nail changes: thickened toenails, slower growth of toenails.- Necrosis (tissue death) or gangrene in severe cases.## Arterial vs. Venous Disease- Arterial Disease:- Weak pulse, pale limb, ulcer on toes, claudication.- Venous Disease:- Normal pulse, edema, ulcers around ankle, aching pain.## Treatments for Peripheral Arterial Disease- Lifestyle changes: stop smoking, exercise.- Medications: antiplatelet (aspirin, clopidogrel), and cilostazol for claudication.- Surgical interventions: angioplasty with stent, bypass surgeries.## Diagnosis of DVT- Signs: unilateral edema, pain, redness, warmth in the affected limb.- Risk factors: immobility, trauma, coagulopathy, obesity, dehydration.## DVT Treatment- Anticoagulants (heparin, enoxaparin) to prevent clot formation.- Thrombolytics (alteplase, TPA) to dissolve existing clots.- Prophylaxis: elastic stockings, sequential compression devices, early ambulation.