Cardio Electrolytes Flashcards
3.5-5.0 mEq/L
K+
causes Increased Cardiac electrical Instability, Ventricular dysrhythmias, & Increased risk of Digoxin Toxicity
Hypokalemia
<3.5 mEq/L
electrocardiogram shows Flattening & Inversion of T-Wave, appearance of a U-Wave, & ST Depression
Hypokalemia
<3.5 mEq/L
causes Asystole & Ventricular Dysrhythmias
Hyperkalemia
>5.0 mEq/L
electrocardiogram may show Tall peaked T-Waves, Widened QRS complexes, Prolonged PR Intervals, or Flat P-Waves
Hyperkalemia
>5.0 mEq/L
136-145 mEq/L
Na+
decreases w/ use of Diuretics & in Heart Failure (indicating Water Excess)
serum Na+ levels
<136 mEq/L
fluid overload; diuretic therapy
HypoK+
9.0-10.5 mg/dL
Ca2+
Calcium
can cause
- Ventricular Dysrhythmias,
- Prolonged ST & QT Intervals, &
- Cardiac Arrest.
HypoCa2+
<9.0 mg/dL
can cause
- Shortened ST Segment & Widened T-Wave
- Atrioventricular Block
- Tachycardia or Bradycardia
- Digitalis Hypersensitivity
- Cardiac Arrest
HyperCa2+
>10.5 mg/dL
3.0-4.5 mg/dL
P
Phosphorus
levels should be interpreted w/ Calcium levels
b/ kidneys Retain or Excrete one Electrolyte in an Inverse Relationship to the other
P
Phosporus
(3. 0-4.5 -P)
(9. 0-10.5 -C)
1.3-2.1 mEq/L
Mg2+
Magnesium
can cause Ventricular Tachycardia & Fibrillation
Hypomagnesemia
<1.3 mEq/L
Electrocardiograph changes: Tall T-Wave, Depressed ST Segments
Hypomagnesemia
<1.3 mEq/L
can cause Muscle Weakness, HypOtension, & BradyCardia
HyperMagnesemia
>2.1 mEq/L
Electrocardiograph changes: Prolonged PR Interval, Widened QRS complex
HyperMagnesemia
>2.1 mEq/L
Electrolyte & Mineral Imbalances can cause cardiac electrical instability that can result in life-threatening
dysrhythmias
an Acute Cardiac Episode can Elevate…
Blood Glucose level
Elevated in Heart Disorders that Adversely affect Renal Circulation (HF & Cardiogenic Shock)
BUN
