Instillation of Drops

Introduction and Purpose of Medication Instillation

Medication instillation involves placing liquid drops into body cavities or mucous membranes, specifically the eyes, ears, and nose. This route provides a direct local effect, which reduces systemic side effects compared to oral or intravenous medications. Nurses frequently administer drops to treat infections, reduce inflammation, manage glaucoma, or relieve localized congestion. Achieving the desired therapeutic outcome depends heavily on delivering the exact dose directly to the affected tissue without contamination.

Equipment Preparation and Patient Assessment

Before touching the patient, gather all necessary supplies including the prescribed medication, clean gloves, sterile gauze or cotton balls, and facial tissues. Check the medication label against the patient's prescription three times to ensure accuracy. Assess the target area for any existing drainage, redness, swelling, or structural damage that might alter the administration technique. Confirm the patient's identity using two unique identifiers and verify known drug allergies before proceeding.

Procedure for Ophthalmic (Eye) Drop Instillation

1. Positioning: Ask the patient to tilt their head backward or lie supine.
2. Exposure: Gently pull down the lower eyelid to create a small conjunctival sac.
3. Dropper placement: Hold the dropper 1 to 2 centimeters above the sac, avoiding contact with eyelashes or skin.
4. Instillation: Release the prescribed number of drops into the center of the conjunctival sac.
5. Lacrimal occlusion: Apply gentle pressure to the nasolacrimal duct for 30 to 60 seconds to prevent systemic absorption.

Procedure for Otic (Ear) Drop Instillation

1. Warming: Warm cold ear drops to room temperature in your hands to prevent severe vertigo or dizziness.
2. Positioning: Tilt the patient's head to the opposite side or have them lie on their side with the affected ear facing up.
3. Pinna adjustment: Straighten the ear canal by pulling the pinna upward and backward for adults, or downward and backward for children under three.
4. Instillation: Hold the dropper slightly above the ear canal and instill the exact number of drops along the side of the canal.
5. Massaging: Gently press on the tragus of the ear a few times to help the medication move downward.

Procedure for Nasal Drop Instillation

1. Positioning: Position the patient supine with the head tilted back, or sitting up with the head hyperextended.
2. Insertion: Insert the nozzle of the dropper about 1 centimeter into the naris, taking care not to touch the nasal septum.
3. Instillation: Direct the drops toward the midline of the superior concha to ensure contact with the nasal mucosa.
4. Resting: Instruct the patient to keep their head tilted back for several minutes to prevent the medication from running back out or down the throat.

Safety Measures and Complications

Cross-contamination represents a major risk during drop administration if the dropper tip touches skin, eyelashes, or the ear canal. Always use a separate dropper or bottle for each patient in clinical settings. Systemic toxicity can occur if potent drops like beta-blocker eye drops are absorbed through the mucous membranes without nasolacrimal occlusion. Stop the procedure immediately and report severe burning, rash, or respiratory distress to the prescriber.

Documentation and Patient Education

Accurate documentation must include the medication name, exact dose, time administered, specific eye, ear, or naris treated, and patient tolerance. Educate ambulatory patients on how to perform self-administration correctly using a mirror for eye drops or counting drops carefully for ears. Emphasize finishing the full course of prescribed drops, especially antibiotics, even if symptoms improve early.