Quiz II study Flashcards
(33 cards)
Causes of hyponatremia
Medications: amiodarone, angiotensin II receptor blockers, angiotensin* converting enzyme inhibitors, desmopresin
Heart, kidney, and liver problems
SIADH
Chronic, severe vomiting or diarrhea causing dehydration.
Too much fluid intake
hormonal changes
BUN
7 to 20 mg/dL
CO2
23 to 29 mmol/L
Creatinine
0.6 to 1.2 mg/dL
Glucose
64 to 100 mg/dL
Chloride
95 to 105 mEq/L
Potassium
3.5 to 5 mEq/L
Sodium
135 to 145 mEq/L
Calcium
9 to 11 mg/dL
S/S Hypokalemia
Impaired repolarization - flattened T wave, depressed ST segment, and presence of a U wave.
P waves peak and the QRS complex is prolonged
Ventricular dysrhythmias
Basic: constipation, heart palpitations, fatigue, muscle weakness, and tingling and numbness
S/S Hyperkalemia
Tall, peaked T waves
depolarization decreases: loss of P waves, a prolonged PR interval, ST segment depression, and widening QRS complex.
Basic: fatigue, confusion, tetany, muscle cramps, paresthesias, and weakness.
Etiology of Hypokalemia
Excessive loss of potassium
GI loss: vomiting, diarrhea, or laxative use
Renal loss: diuresis or low magnesium levels (stimulates renin and aldosterone release, resulting in potassium excretion)
Diet - Foods with Potassium
Lentils
potatoes
bananas
avocados
spinach/broccoli
dried fruit (raisins, apricots)
Metabolic acidosis impact
Renal: kidneys can’t properly filer acids from bloodstream
Raspatory
Metabolic Acidosis
Normal
Ph: 7.35-7.45
PaCO2 - 35-45
HCO3 - 22-26
Ph:7.28
PaCO2: 36
HCO3: 19
Lasix indications
Edema associated with CHF
Cirrhosis of the liver
Renal disease and nephrotic syndrome
Lasix side effects
dehydration
electrolyte imbalance
metabolic alkalosis
MOA of Lasix
Inhibits the reabsorption of sodium and chloride from the loop of Henle and distal renal tubule.
Increases renal excretion of water, sodium, chloride, mag, potassium and calcium.
Pathology of Pulmonary Embolism
Occurs when a blood clot gets stuck in an artery in the lung, blocking blood flow to part of the lung.
Etiology of Pulmonary Embolism
Blocked artery in the lungs
S/S Pulmonary Embolism
dyspnea
hypoxemia
tachypnea
cough
chest pain
hemoptysis
crackles/wheezing
tachycardia
syncope
Interventions for PE
Supplemental O2, intubation if needed
Monitor labs: hgb, aPTT, INR
Balance activity and rest
PE treatment
Fibrinolytic agent
Heparin
Warfarin
analgesia
Nurse action during intubation
Establish O2 support, prepare for a tracheostomy