Nephrology Flashcards
(164 cards)
Important information
Major extracellular buffer in human blood is the carbon dioxide-bicarbonate buffer pair, which has a pK of 6.1
How seizures cause High Anion Gap Metabolic acidosis?
Due to increased production of lactate from muscles and decrease hepatic uptake of lactate
Name the cause of high anion gap metabolic acidosis in which is osmolal gap is increased
Ethylene glycol
Methanol
Propylene glycol
Name the acid which causes mixed anion gap metabolic acidosis viz anion gap metabolic acidosis and respiratory alkalosis
Aspirin
Lactate
Sulfuric acid
Phosphoric acid
Name the causes of Metabolic Alkalosis in which urine chloride level is low
Vomiting
NG aspiration
Prior Diuretic use
Name the causes of Metabolic Alkalosis in which urine chloride is high but patient is normotensive
Current diuretic use
Gitelman syndrome
Bartter syndrome
Name the causes of Metabolic Alkalosis in which urine chloride is high but patient is Hypertensive
Excessive mineralocorticoid activity due to;
Conn syndrome
Cushing syndrome
eCtopic ACTH production
Important information regarding Metabolic Alkalosis
If urine chloride level is <20mEq/L = Saline responsive
If urine chloride level is >20mEq/L = Saline un-responsive
Important information
In pregnancy Respiratory alkalosis occurs due to activation of respiratory center by Progesterone
Triad of Type 1 RTA
- Inability of distal cells of nephron to secrete H+
- Low body pH But high urine pH
- Low Potassium level
Why kidney stones developed in type 1 RTA?
Due to inability of distal cell of nephron to secrete H+ in lumen results alkaline urine produce which increases the formation of stones
Which type of Renal tubular acidosis occur in sickle cell trait?
Type 1 RTA
Traid of type 2 RTA
- Inability of proximal cells of nephron to absorb HCO3-
- Low pH of body as well as urine (due to distal cells )
- low potassium in body
How to d/f liddle syndrome and Conn syndrome?
In former Sr aldosterone is undetectable and in latter Sr aldosterone is detectable and very high
Liddle syndrome occurs due to mutation in collecting cells of nephron result excessive absorption of sodium ions
Name the drugs causing Hyperkalemia
A = ACEI / ARBs B = BB C = Cyclosporine D = Digoxin
N = NSAID S = Succinylcholine K = K+ sparing diuretics H = Heparin
What are the ECG findings of Hyperkalemia?
Tall T waves with PR Prolongation
QRS widening
How to stabilise cardiac membrane in hyperkalemia?
Give Calcium Chloride Or Calicum gluconate
Important information
Pts with chronic hyperkalemia may be asymptomatic until K+ gradually rises >/=7.0 mEq/L.
INDICATIONS FOR EMERGENT TREATMENT OF HYPERKALEMIA
- Marked elevation (>6.5 mEq/L) without characteristic ECG changes OR
• Presence of hyperkalemia-related ECG changes
• Rapid rise in serum potassium level due to tissue breakdown
How low level of Magnesium decreases potassium level?
Mg is imp.cofactor for K+ uptake and maintenance of intracellular K+ check and correct Mg in chronic alcoholics to correct hypokalemia.
Another cause of hypomagnesemia is diuretics
How to t/m severe Hypercalcemic>14mg/DL Or Symptomatic?
- long term give Bisphosphonate
* Short term Hydrate PT & give calcitonin and Avoid to give diuretic unless volume overload
How to t/m moderate Hypercalcemia that is 12-14mg/DL?
- No t/m unless Symptomatic
* And if symptomatic then t/m A/c to severe Hypercalcemia
When to use hemodialysis as a t/m for Hypercalcemia
Hemodialysis is an effective treatment for hypercalcemia, but is typically reserved for patients with renal insufficiency or heart failure in whom aggressive hydration cannot be administered safely
How to t/m Euvolemic Or Hypervolemic hypernatremia?
Free water supplementation Or 5% D/W in water