Question | Answer |
What is the dominant cation in ICF? | Potassium |
What regulates ICF? | Potassium |
What facilitates contraction of skeletal and smooth muscles, including myocaridal contraction...(regulates heart rhythm) | Potassium |
Assists with nerve impulse conduction | Potassium |
Assists with acid base balance | Potassium |
Hypokalemia causes | Potassium of <3.5, overuse of diuretics, vomiting and diarrhea, overuse of laxatives, ASA, Amphotericin B, Kayexlate |
Hyperkalemia | >5.0 Adrenal insuf. Increased K in diet, Antineoplastic medications, INH, Heparin, over use of K supp., K sparing diurectics, Renal Failure |
What are the 5 interventions for Hypokalemia | 1.High K diet 2.Administer IV or po K 3.Monitor I&O, 4.EKG 5.labwork |
What are the 5 interventions for Hyperkalemia | 1.Omit food that contain K 2.Kayexlate (PO,NG,ENEMA) 3.Monitor I&O 4.EKG 5.Labs |
Normal levels of Calcium | 8.4-10 mEq/L |
4 Functions of Calcium | 1.plays a role in cell permeability 2.formation of bones and teeth 3.blood coagulation 4.transmission of nerve impulses and normal muscle contraction |
5 causes of Hypocalcemia | <8.4 1.duetart deficiency 2.pancreatic dz 3. dz of the small bowel 4.decreased function of the parathyroid 5.decrease in vit D |
5 causes of Hypercalcemia | >10 1.Metastatic bone ca 2.excessive intake of ca 3. increased function of the parathyroid 4.excessive vit d 5. antacids containing ca |
3 functions of MG | 1.regulates skeletal 2. stimulates parathyroid homone, thus regulates ICF CA++ lvels 3. second most abundnat IC cation |
Normal range of MG | 1.3-2.1mEQ/L |
4 causes of Hypomagnesemia | <1.3 1.chronic alcoholism 2.chronic diarrhea 3.prolonged nasogastric sx 4.starvation |
3 causes hypermagnesemia | >2.1 1.Kidney's inability to excrete MG++ that was wither absorbed from the intestine or infused 2.chronic renal failure 3. overdose of MG++ |
Normal range of Na+ | 135-145 mEq/L |
3 functions of Sodium | 1. controls distribution of water throughout the body 2.regulates ECF volume 3.plays important role in the transmission of nerve impulses and muscular contraction |
6 causes of hyponatremia | <135 1.vomiting 2.diarrhea 3.NG tube sx 4. Excessive sweating 5.Nutritional deficit 6. Potent diuretics |
7 causes of Hypernatremia > 145 | >145 1. more H20 than Na+ from the body 2.excessive intake of Na+ 3. corticosteroids 4. excessive use of laxatives 5. anti-inflammatory drugs 6. oral contraceptives 7. iv saline infused rapidly |