LVN IV Therapy & Fluid Management 5

Question 1

A patient receiving 0.45% NaCl IV is at risk for which type of fluid shift?

Accepted Answer

Fluid moving from the vascular space into cells

Answer

0.45% NaCl is hypotonic; once infused, it shifts water from the vascular space into cells, which can cause cellular swelling.

Question 2

The LVN is caring for a patient with hypermagnesemia. Which finding requires immediate notification of the physician?

Accepted Answer

Loss of deep tendon reflexes

Answer

Loss of deep tendon reflexes is an early warning sign of severe hypermagnesemia and impending respiratory depression or cardiac arrest.

Question 3

Which practice best reduces the risk of catheter-associated bloodstream infection (CLABSI) when maintaining a central line?

Accepted Answer

Use strict aseptic technique and chlorhexidine for site care

Answer

CLABSI prevention requires strict aseptic technique with chlorhexidine-based antiseptics, sterile dressings, and proper hand hygiene during all line manipulations.

Question 4

A patient is ordered Lactated Ringer's (LR) solution. Which patient condition is a contraindication for this fluid?

Accepted Answer

Severe liver disease

Answer

LR contains lactate that must be metabolized by the liver; patients with severe liver disease cannot convert lactate to bicarbonate, risking lactic acidosis.

Question 5

An LVN is assessing IV catheter patency. When aspirating a peripheral IV, blood return confirms patency, but which additional sign also confirms the catheter is in the vein?

Accepted Answer

Free-flowing flush without swelling or resistance

Answer

A freely flowing saline flush without resistance, swelling, or patient discomfort confirms that the catheter tip remains within the vein.

(LVN) Licensed Vocational Nurses Certification Practice Test

(LVN) Licensed Vocational Nurses Certification Practice Test

LVN IV Therapy & Fluid Management 5