Cardio Electrolytes

Question 1

3.5-5.0 mEq/L

Answer 1

K+

Question 2

causes Increased Cardiac electrical Instability, Ventricular dysrhythmias, & Increased risk of Digoxin Toxicity

Answer 2

Hypokalemia

<3.5 mEq/L

Question 3

electrocardiogram shows Flattening & Inversion of T-Wave, appearance of a U-Wave, & ST Depression

Answer 3

Hypokalemia

<3.5 mEq/L

Question 4

causes Asystole & Ventricular Dysrhythmias

Answer 4

Hyperkalemia

>5.0 mEq/L

Question 5

electrocardiogram may show Tall peaked T-Waves, Widened QRS complexes, Prolonged PR Intervals, or Flat P-Waves

Answer 5

Hyperkalemia

>5.0 mEq/L

Question 6

136-145 mEq/L

Answer 6

Na+

Question 7

decreases w/ use of Diuretics & in Heart Failure (indicating Water Excess)

Answer 7

serum Na+ levels

<136 mEq/L

Question 8

fluid overload; diuretic therapy

Answer 8

HypoK+

Question 9

9.0-10.5 mg/dL

Answer 9

Ca2+

Calcium

Question 10

can cause

1. Ventricular Dysrhythmias,
2. Prolonged ST & QT Intervals, &
3. Cardiac Arrest.

Answer 10

HypoCa2+

<9.0 mg/dL

Question 11

can cause

1. Shortened ST Segment & Widened T-Wave
2. Atrioventricular Block
3. Tachycardia or Bradycardia
4. Digitalis Hypersensitivity
5. Cardiac Arrest

Answer 11

HyperCa2+

>10.5 mg/dL

Question 12

3.0-4.5 mg/dL

Answer 12

P

Phosphorus

Question 13

levels should be interpreted w/ Calcium levels

b/ kidneys Retain or Excrete one Electrolyte in an Inverse Relationship to the other

Answer 13

P
Phosporus

(3. 0-4.5 -P)
(9. 0-10.5 -C)

Question 14

1.3-2.1 mEq/L

Answer 14

Mg2+

Magnesium

Question 15

can cause Ventricular Tachycardia & Fibrillation

Answer 15

Hypomagnesemia

<1.3 mEq/L

Question 16

Electrocardiograph changes: Tall T-Wave, Depressed ST Segments

Answer 16

Hypomagnesemia

<1.3 mEq/L

Question 17

can cause Muscle Weakness, HypOtension, & BradyCardia

Answer 17

HyperMagnesemia

>2.1 mEq/L

Question 18

Electrocardiograph changes: Prolonged PR Interval, Widened QRS complex

Answer 18

HyperMagnesemia

>2.1 mEq/L

Question 19

Electrolyte & Mineral Imbalances can cause cardiac electrical instability that can result in life-threatening

Answer 19

dysrhythmias

Question 20

an Acute Cardiac Episode can Elevate…

Answer 20

Blood Glucose level

Question 21

Elevated in Heart Disorders that Adversely affect Renal Circulation (HF & Cardiogenic Shock)

Answer 21

BUN