Class 4 - cardiovascular Flashcards
Telangiectasia (Spider Veins)
Dilated groups of small blood vessels. Most frequently on face and thighs
Frostbite
Damage to skin/tissues due to cold exposure
Frostbite pathogenesis
Ice crystals form in tissues and expand into extracellular spaces. Leads to tissue death
Superficial frostbite
Affects skin and subcutaneous tissue. Discoloration, swelling, burning/tingling
Deep frostbite
Beyond superficial tissue. Necrosis, gangrene
Frostbite diagnosis
Asking questions, bone scan
Frostbite treatment
vasodilators, rewarm w/out massaging, meds, surgery/amputation
Diabetic Microangiopathy
Hyperglycemia leading to vascular complications affecting small and large blood vessels
Diabetic Retinopathy
M/c cause of adult blindness in US
Diabetic Neuropathy
Nerve ischemia causing intracellular metabolic changes that impair nerve function.
Diabetic Nephropathy
M/c of renal failure. Fibrosis/glomerular sclerosis caused by diabetes
Decompression Sickness (The bends)
Rapid pressure reduction causes gas previously dissolved in blood to form bubbles in blood vessels
Henry’s Law
Solubility of gas in liquid directly proportional to pressure exerted on gas and liquid
Decompression Sickness Incidence
2-4/10000 dives. Men > women
Decompression sickness risk factors
cold temperature dives, prolonged or deep dives, rapid ascent, dehydration, flying after diving, obesity, old age
Decompression sickness S&S
Joint/muscle pain, nausea/vomiting (N/V) SOB, numbness, tingling, seizures, itching, hearing loss
Decompression sickness diagnosis
History and clinical manifestation
Decompression sickness treatment
Oxygen chamber and recompression therapy
Decompression sickness prognosis
About 80% recover completely (20% permanent damage - ex. Numbness, tingling)