chlorhexidine gluconate + isopropyl alcohol: clinical use

Prescribing considerations

• Confirm that the intended area is intact skin and select an applicator appropriate for the coverage area.
• Check for previous chlorhexidine reactions, including unexplained peri-anaesthetic allergy.
• Prevent pooling beneath the patient, in skin folds or under occlusive materials; remove soaked materials.
• Allow complete air-drying before electrocautery, lasers or other ignition sources.
• Use particular caution in neonates, especially premature infants, because chemical burns have been reported.

Contraindications and cautions

• Hypersensitivity to chlorhexidine gluconate, isopropyl alcohol or any excipient.
• Do not apply to open, broken or damaged skin.
• Avoid direct contact with eyes, mucous membranes, neural tissue and the middle ear.

Monitoring

• Observe for erythema, rash, blistering, pain, inflammation or chemical injury.
• During anaesthesia, consider chlorhexidine if abrupt hypotension, urticaria or angioedema occurs.
• Ensure the prepared area and surrounding materials are completely dry before beginning the procedure.

Clinical pharmacology

Isopropyl alcohol provides rapid, non-persistent antimicrobial activity through protein denaturation. Chlorhexidine disrupts microbial membranes and binds to superficial epidermal layers, producing persistent activity. Absorption through intact skin is low.

Formulation and product differences

• The selected product is a sterile, orange-tinted cutaneous solution in latex-free, single-use applicators of several sizes.
• The tint shows the prepared area but does not contribute antiseptic activity.
• Applicator size and design vary with the area requiring preparation.