P.O.P (Plaster of Paris) 6-inch

Pronunciation

• plas-ter of PAR-is

Trade Name

• P.O.P (commonly referred to as Plaster of Paris)

Classification

• Therapeutic: Orthopedic aid
• Pharmacologic: Cast material

Indications

• Used for immobilization of fractures, sprains, and other orthopedic conditions.
• Provides support and protection to the injured area during the healing process.
• Can also be used for making molds for prosthetics and orthopedic devices.

Mechanism of Action

• Plaster of Paris is a form of calcium sulfate hemihydrate. When mixed with water, it forms a paste that hardens quickly. This hardened cast immobilizes the injured area, allowing bones or tissues to heal in the correct position.

Pharmacokinetics

• Not applicable as it is a non-systemic therapeutic material.

Contraindications and Precautions

• Contraindications: Hypersensitivity to plaster or any component of the cast material; severe swelling at the injury site that might lead to complications due to restricted blood flow.
• Precautions: Care must be taken to ensure the cast is not applied too tightly, as this can cause circulation problems. Monitor for signs of skin irritation, pressure sores, or decreased circulation. Avoid getting the cast wet, as this can weaken the plaster.

Adverse Reactions and Side Effects

• Common: Itching under the cast, mild discomfort.
• Serious: Compartment syndrome (due to swelling under the cast), skin breakdown or sores, circulatory impairment, nerve damage.

Interactions

• Not applicable as it is a non-systemic therapeutic material.

Route/Dosage

• Application: The 6-inch width plaster bandage is typically used for larger areas like the arm, leg, or torso. The plaster bandage is dipped in water, then wrapped around the affected area in layers until the desired thickness and support are achieved. The cast is then molded and allowed to harden.
• Removal: Requires a cast saw to safely cut and remove the hardened cast.

Availability Formulations

• Plaster Bandages: Typically available in rolls of varying lengths and widths; a 6-inch width is common for larger casts.