3 Electrolyte Interpretation and Priorities Free Online FlashCards

What context should guide interpretation of an electrolyte result?

Interpret results alongside symptoms, rate of change, kidney function, medications, and ECG; use the laboratory’s reference range and the patient’s baseline.

What is the first priority when an electrolyte value is abnormal?

Assess airway, breathing, circulation, vital signs, mental status, muscle strength, reflexes, and relevant symptoms.

Which findings make an electrolyte abnormality time-critical?

Seizure, new confusion, fainting, marked weakness or paralysis, tetany, breathing difficulty, hypotension, palpitations, or an abnormal ECG requires prompt escalation.

What is a critical safety rule for IV potassium?

Never administer potassium by IV push. Give replacement only as ordered and at the prescribed rate.

What makes hyponatremia neurologically dangerous?

Hyponatremia is sodium below $135$ mEq/L. Neurologic symptoms can progress to seizures or coma; correction must be careful because overly rapid correction can cause serious neurologic injury.

What does hypernatremia usually reflect, and what should be assessed?

Hypernatremia usually reflects too little body water relative to sodium. Assess water access, intake and output, and volume status; fluid replacement must be prescribed and monitored.

Which ECG changes can occur with hypokalemia?

Hypokalemia may cause flattened T waves and prominent U waves. Significant abnormalities, ECG changes, or severe weakness warrant reporting and rhythm monitoring when indicated.

How should an unexpected high potassium result be handled?

Hemolysis can falsely elevate potassium, so an unexpected result may need repeat testing. Do not assume it is false or delay urgent care if the patient is unstable.

What neuromuscular and cardiac signs can indicate hypocalcemia?

Hypocalcemia can cause tingling around the mouth or fingers, cramps, spasms, and tetany. Severe cases may cause seizures, laryngospasm, or a prolonged QT interval.

What symptoms can occur with hypercalcemia?

Hypercalcemia may cause constipation, nausea, thirst, frequent urination, weakness, and confusion. More severe elevation can impair consciousness, kidney function, and cardiac rhythm.

How can hypomagnesemia affect other electrolyte abnormalities?

Hypomagnesemia can cause tremor, cramps, hyperreflexia, tetany, seizures, and dysrhythmias. It may coexist with hypokalemia or hypocalcemia and make them harder to correct.

Which signs of hypermagnesemia require immediate escalation?

Hypermagnesemia can cause diminished reflexes, hypotension, lethargy, slow or difficult breathing, and ECG changes. Respiratory depression, hypotension, or reduced consciousness requires immediate escalation.