Informed Consent for Incision and Drainage of Abscess

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Informed Consent for Incision and Drainage of Abscess

Patient and Provider Information

What the Procedure Involves

An abscess is a pocket of pus that forms under the skin as the body's response to a bacterial infection. The standard and most effective treatment is incision and drainage (I&D): making a small opening in the abscess to allow the pus to drain out completely. Antibiotics alone are usually not enough to treat an abscess because the antibiotic cannot penetrate inside the pus-filled cavity. The procedure steps are: (1) The area around the abscess is cleaned with an antiseptic solution. (2) Local anesthetic is injected around and under the abscess to numb the area. Numbing an abscess can be more difficult than numbing other tissue because the acidic environment inside the abscess reduces how well the anesthetic works. Some discomfort during the procedure is to be expected even with adequate anesthesia. (3) A small incision is made at the point where the abscess is closest to the skin surface. (4) The pus is drained and the cavity is explored with a blunt probe to break up any pockets. (5) The cavity is irrigated (washed out) with sterile saline. (6) A gauze packing strip may be placed inside the cavity to keep it open and allow continued drainage. (7) The skin is covered with a dry dressing. In most cases, the skin is NOT sutured (stitched) closed, as the wound needs to heal from the inside out.

MRSA and Bacterial Culture Disclosure

Skin abscesses are commonly caused by Staphylococcus aureus bacteria. A significant proportion of community-acquired skin abscesses in the United States and other countries are caused by methicillin-resistant Staphylococcus aureus (MRSA), a strain that is resistant to many common antibiotics including penicillin and amoxicillin. A wound culture (a sample of the pus sent to a laboratory) may be collected during the procedure to identify the bacteria causing the infection and confirm which antibiotics it is sensitive to. Culture results typically take 48 to 72 hours. If the culture identifies an organism, the treating provider or clinic will contact the patient with updated antibiotic recommendations if needed.

Risks and Possible Complications

Pain during the procedure: local anesthetic reduces but may not eliminate all discomfort, especially during injection into the inflamed tissue and during cavity exploration.
Bleeding: some bleeding during and after the procedure is expected and is usually controlled with direct pressure. Large or deep abscesses near blood vessels carry a higher bleeding risk.
Incomplete drainage or recurrence: if the abscess has multiple pockets or satellite cavities, complete drainage may require additional procedures. Abscesses can recur, particularly pilonidal abscesses and those in patients with hidradenitis suppurativa (a chronic skin condition).
Spreading infection (cellulitis): the skin around the abscess may show signs of spreading bacterial infection even after drainage. The provider will assess the extent of surrounding cellulitis. A course of oral antibiotics may be prescribed.
Bacteremia: in rare cases, bacteria may enter the bloodstream during or around the drainage procedure, causing symptoms of systemic infection such as fever, chills, or feeling very unwell. Patients with heart valve abnormalities, joint replacements, or suppressed immune systems are at higher risk and may be treated with antibiotics before or after the procedure.
Scarring: all skin incisions result in scarring. The degree of scarring depends on the abscess size, location, and how well the wound heals.
Nerve or vessel proximity: abscesses near major nerves or blood vessels (such as in the groin, axilla, or neck) require careful technique to avoid injury to nearby structures.

Wound Packing and Follow-Up Instructions

If packing (gauze strip) is placed inside the abscess cavity: (1) The packing must be removed or changed within 24 to 48 hours. The patient must return to this facility or see another provider for packing removal. (2) After packing removal, the wound should be gently cleaned with warm water. A dry dressing should be applied. (3) The patient must attend all follow-up appointments as scheduled until the wound is fully healed from the inside out. This may take 1 to 4 weeks depending on the size of the abscess. (4) Contact the clinic or return to the emergency department immediately if: the pain worsens after 48 hours, the wound shows increased redness, swelling, warmth, or pus, or if the patient develops a fever above 38 degrees Celsius (100.4 degrees Fahrenheit).

Alternatives to Incision and Drainage

Antibiotics alone: current clinical evidence shows that antibiotics without drainage are significantly less effective than I&D for most skin abscesses. Antibiotics alone are not recommended as the primary treatment.
Needle aspiration: some small, simple abscesses may be drained using a large-bore needle rather than a scalpel. This is a less invasive option but has higher rates of incomplete drainage and recurrence.
Warm compresses and observation: may be considered for very early, small abscesses that have not yet fully pointed. This is not recommended for formed, fluctuant abscesses.
No treatment: leaving a formed abscess untreated risks the infection spreading to deeper tissues (cellulitis or fasciitis), entering the bloodstream (sepsis), or burrowing to form a fistula tract. This is not recommended.

Right to Refuse Treatment

The patient has the right to decline this procedure. The provider will explain the risks of leaving a formed abscess untreated. Refusing this treatment does not prevent the patient from seeking care elsewhere or returning to this clinic at a later time.

Patient Understanding

I confirm that I have read this consent form or had it explained to me. I have asked questions about the incision and drainage process, the wound packing, the antibiotic plan, and the follow-up schedule. All my questions have been answered to my satisfaction. I understand that I must return for packing removal if packing is placed and must attend follow-up until the wound is fully healed.

Language Access

If English is not your main language, a qualified interpreter is available at no cost. Please notify staff before any treatment begins.

Copy of Consent

I acknowledge that I have been offered a copy of this signed consent form for my records.

Patient Authorization

I voluntarily agree to incision and drainage of the abscess described in this form. I authorize collection of a wound culture sample if ordered. I agree to follow all wound care and follow-up instructions. I understand and accept the risks of this procedure, including the possibility of recurrence and the need for repeat drainage.

Signatures and Verification

Patient Signature (or Parent/Guardian if minor)
Relationship to Patient (if signing for minor)
Treating Provider Signature
Witness Signature
Date and Time of Consent
Document ID: CC-PENDING
CONSENTCOLLECT