All Questions 401-600 Flashcards
(200 cards)
Type 1 RTA (distal)
H secretion. Low K. pH > 5.3. Rx: HCO2 + K. Hereditary, amphotericin, collagen vascular disease, cirrhosis, nephrocalcinosis.
Type 2 RTA (proximal)
Bicarb reabsorption. Low K. pH < 5.3. Rx: HCO3 + K + thiazide. Hereditary, sulfonamides, carbonic anhydrase inhibitors, Fanconi syndromes.
Type 4 RTA (distal)
Aldosterone defiency. High K. pH < 5.3. Rx: Fludrocortisone, K restriction, HCO3. Hyporeninemic with diabetes, HTN, or chronic interstitial nephritis; aldosterone resistance.
Hyperchloremic metabolic acidosis (no anion gap)?
Diarrhea, RTA, spironolactone/acetazolamide, TPN
Respiratory acidosis?
Foreign body, pneumothorax, flail chest, hypoventilation d/t sedatives/narcs, obstructive/restrictive pulmonary disease, pleural effusion.
Metabolic alkalosis?
NaCl responsive = vomiting, villous adenoma, contraction alkalosis, diuretics. Rx IVF + K. Not NaCl responsive = Conn’s & Cushing’s, adrenal hyperplasia, licorice, Bartter’s syndrome. Rx: KCl and spironolactone or acetazolimide (enhance HCO3 excretion)
Respiratory alkalosis?
Hyperventilation (anxiety/pain), CVA, head trauma, asthma, PE, CHF, pneumonia, pregnancy, hepatic insufficiency, ASA toxicity, thyrotoxicosis, mechanical ventilation. Rx = treat underlying cause.
Hyponatremia?
High osmolality = hyperglycemia or hypertonic infusion. Normal osmolality = Pseudohyponatremia, hyperlipidema, hyperproteinemia. Low osmolality = hypotonic hyponatremia.
Hypotonic hyponatremia?
Check FeNa: > or < 1%.
Hypotonic hyponatremia with FeNa >1%.
Hypervolemic = renal failure; Euvolemic = SIADH, hypothyroidism, renal failure, drugs; Hypovolemic = diuretics, RTA, adrenal insufficiency, ACE inhibitors.
Hypotonic hyponatremia with FeNa <1%.
Hypervolemia = nephrosis, CHF, cirrhosis; Euvolemic = polydipsia; Hypovolemic = vomiting, diarrhea, third spacing, dehydration.
Treatment fo hypotonic hyponatremia?
Hypervolemic = salt & water restrict; Euvolemic = salt & water restrict; Hypovolemic = normal saline.
Hyperkalemia signs and symptoms?
Intestinal colic, areflexia, weakness, peaked T wave, prolonged QRS and PR, low P.
Causes of hyperkalemia?
Cellular shifts: (tissue injury, acidosis, insulin deficiency, drugs including succinylcholine, digitalis, beta-agonists, arginine); Decreased excretion: renal insufficiency, drugs (spirlonolactone, triamterene, ACE-I, trimethoprim, NSAIDs), mineralocorticoid deficiency; Iatrogenic and spurious: hemolysis, fist clenching, leukocytosis, thrombocytosis.
Treatment of hyperkalemia?
C BIG K = Calcium gluconate (cardiac membrane stabilization); Bicarb, Insulin, Glucose; Kayexalate and loop diuretics (furosemide).
Hypokalemia symptoms?
muscle weakness, cramps, ileus, hyporeflexia, parasthesias, flaccid paralysis.
Causes of hypokalemia?
Transcellular redistribution (alkalosis, insulin excess, beta-adrenergic agonists, hypokalemic peridodic paralysis, pseudohypokalemia), potassium depletion
Linear calcification on x-ray of the knee?
Pseudogout. Positive birefringent crystals. Associated with hemachromatosis.
58yo F with long history of RA develops splenomegaly and leukopenia.
Felty’s syndrome.
meningococcemia
septic shock, pustules, organisms on gram stain
gonnococcemia
prositutes, urethritis, joint pain with effusion
typhoid fever
poor sanitation, prolonged fever, constipation, bradycardia, rose spots
staph sepsis
vesicles and bullae, IVDA
vibrio vulnificus
raw seafood, lesions on legs > arms, cirrhotics most susceptible