How to prepare for breast reduction surgery: the key steps to a safe operation

1. The first consultation: medical assessment and expectations

It all begins with a diagnostic consultation where we assess your case individually. During this first visit:

• A detailed physical examination is carried out to assess breast volume, the quality of the skin, the position of the nipple-areola complex and the symmetry between the two breasts.
• Your physical symptoms (pain, functional limitations) and your aesthetic expectations are discussed, to determine whether surgery is indicated and which technique is most suitable.
• Your full medical history is reviewed, including previous illnesses, operations, allergies, current treatments and relevant family history.
• All your questions are answered about the procedure, the recovery, the possible complications and the results you can expect.

This first step is essential for building confidence, establishing clear communication with the medical team and defining a surgical plan suited to you.

2. Pre-operative tests: safety above all

Once surgery is indicated, a set of medical tests is requested to ensure you are in the best condition for the operation. These tests include:

• Full blood tests, with clotting studies, liver and kidney function and a general health profile.
• An electrocardiogram, to rule out cardiovascular problems.
• Breast imaging (mammography or ultrasound), according to your age or your personal and family history.
• An anaesthetic assessment, in which the specialist reviews the results and weighs up any anaesthetic risks.

These tests must be carried out within the 90 days before surgery and are essential if it is to be scheduled with proper medical safeguards.

3. The anaesthetic consultation: assessment and planning

The anaesthetist will review the pre-operative results (blood tests and electrocardiogram) along with your medical history and any risk factors. Should there be anything significant, an assessment is carried out, either in person or by telephone, in which:

• Further aspects relating to your health are assessed.
• The type of general anaesthetic to be used is decided and the safety protocol during the operation is explained.
• Questions are answered about fasting before surgery, the hours leading up to the operation and which medication you should stop or continue.
• Information is given about waking up after surgery and how post-operative pain will be controlled.

This step is particularly important for patients with chronic illnesses, drug allergies or a history of reactions to anaesthetic.

4. Surgical marking: designing the procedure for you

On the day of the operation, before going into theatre, the surgical marking is carried out, an essential step in ensuring a harmonious, precise result.

During this stage:

• Key anatomical references are drawn on the skin: the midline, the breast axis, the inframammary fold, the areas to be removed and the new position of the nipple-areola complex.
• The marking is done with the patient standing, since the shape of the breast changes on lying down on the operating table.
• The final design is adapted to the volume to be removed, the technique chosen (vertical, inverted T, and so on) and each patient’s body proportions.

This takes between 15 and 30 minutes and is a moment of maximum surgical concentration, since every line determines the final result.

5. Advice for the days before surgery

So that you arrive in theatre in the best possible condition, it is essential to follow a number of recommendations:

• Stop smoking at least 4 weeks before and after surgery, since tobacco reduces the oxygen in the tissues and raises the risk of healing complications and infection.
• Avoid taking anti-inflammatories, aspirin or anticoagulants, unless expressly instructed by a doctor, since they can increase the risk of bleeding.
• Keep to a balanced diet and drink enough fluids, which aids recovery and improves the immune response. A high-protein diet before and after surgery can help healing.
• Prepare the place where you will rest at home, with comfortable clothes, post-surgical bras (unless you buy them at the clinic, which is the usual option), pillows so you can sleep propped up and the prescribed medication.
• Wash your skin with antiseptic soap the day before and on the day of the operation, following the instructions you are given.

These measures form part of the surgical safety protocol and help to keep the risk of complications to a minimum.

What really changes the risk before surgery

Of everything that can be done in the preceding weeks, it is worth knowing what counts, and by how much. A 2025 meta-analysis bringing together 61 studies and 71,149 patients who had a breast reduction put figures to the risk factors for complications:

• Smoking: OR 1.80 (95% CI 1.29–2.50), associated above all with wound infection and with the edges coming apart.
• Body mass index ≥ 30: OR 1.59 (95% CI 1.45–1.74), with more delayed healing, fat necrosis, infection and wound breakdown.
• Diabetes: OR 1.41 (95% CI 1.11–1.79).
• Previous radiotherapy to the breast: OR 3.24 (95% CI 1.94–5.40), the weightiest factor of all.

The first two are modifiable, and that is where each patient’s real margin lies: stopping smoking before surgery and arriving in the best possible metabolic condition is not a courtesy recommendation, it is what moves the needle most.

These figures do need putting in perspective, though, so as not to alarm unduly. In the BRAVO study, with 179 patients followed prospectively, 43% had some complication — most often delayed healing — and even so the authors found something worth holding on to: having had a complication did not reduce the improvement in quality of life. Most of those complications are a matter of dressings and time, not of the final result.

6. The day of surgery: what to bring and how to prepare

On the day of the operation:

• Come fasting (at least 6 hours without eating or drinking).
• Wear comfortable, loose clothing that is easy to take off. A shirt with buttons at the front is recommended.
• Do not wear make-up, body creams, perfume or nail varnish.
• Do not wear jewellery, piercings or metal objects.
• Bring your medical documents and the pre-operative reports with you.

The operation is carried out in theatre, under general anaesthetic, and usually takes between 2.5 and 3.5 hours, depending on the case. Most patients can be discharged the same day or after a night in hospital, depending on the option chosen.

7. Emotional support: a key part of the process

Although the surgery is safe and well tolerated, it is normal to feel some anxiety or uncertainty in the days beforehand. Having the company of people you trust and keeping open communication with the medical team helps you face the process calmly.

At our clinic the team is available to answer any question that may arise before the operation. Emotional preparation matters as much as physical preparation in ensuring a positive surgical experience.

Preparing properly for breast reduction surgery is essential if the whole process is to go safely and smoothly. From the initial assessment to the day in theatre, every step has a purpose: to get the best results and keep the risks to a minimum.

At the Instituto de Cirugía Plástica del Mediterráneo we work to a rigorous medical protocol with warm, individual care. If you are considering a reduction mammoplasty, we will help you prepare with everything you need so that your surgery is a safe, well-managed and transformative experience.