Situation: A 52-year-old woman has invasive ductal carcinoma of the left breast, stage IIB (T2 N1 M0), grade 3, estrogen receptor-positive and human epidermal growth factor receptor 2 (HER2)-negative. She undergoes a modified radical mastectomy with axillary lymph node dissection and will then receive doxorubicin and cyclophosphamide every 21 days. She has no known drug allergies. On the first postoperative day, which measure should the nurse include in the care of her left arm?

After axillary node dissection, the arm on the operative side is elevated on pillows to promote lymph and venous drainage, and prescribed exercises start with hand squeezing and elbow flexion. Shoulder exercises such as wall climbing are added later as ordered. Heat is avoided on the affected side because it increases lymphedema risk.

Clinical context: postoperative care after modified radical mastectomy with axillary lymph node dissection

The first postoperative day after axillary lymph node dissection (ALND) is a critical window for protecting the affected arm. The lymphatic channels that normally drain interstitial fluid from the upper extremity have been surgically interrupted, which means the arm depends on gravity and muscle pump activity to move fluid proximally. The correct nursing measure is to elevate the arm on pillows and have the patient squeeze a soft ball.

Elevation uses gravity to promote venous and lymphatic return, while gentle hand squeezing activates the forearm muscle pump to move fluid without stressing the healing axilla. This combination directly addresses the physiologic risk of fluid accumulation in the early postoperative period.

The exercise progression after ALND is deliberately staged. On the first postoperative day, only hand squeezing and elbow flexion are appropriate. Key point! Shoulder-range exercises such as wall climbing are introduced later, once the surgical drains are removed and the incision has begun to heal. Aggressive shoulder abduction or overhead reaching too early can disrupt the axillary closure, increase seroma formation, and place tension on the suture line.

Heat application to the axilla is contraindicated. Heat causes local vasodilation and increases capillary filtration, which can worsen interstitial fluid accumulation and raise the risk of breast cancer-related lymphedema (BCRL). The affected arm should also be protected from any form of thermal stress, including hot packs, heating pads, and hot water immersion.

Keeping the arm immobilized in a sling until drain removal is also incorrect. Prolonged immobility reduces the muscle pump activity that assists lymphatic drainage and can contribute to shoulder stiffness and functional impairment. The goal is protected mobility, not immobilization.

Intervention	First postoperative day	Rationale
Elevation on pillows	Yes	Promotes gravity-dependent venous and lymphatic drainage
Hand squeezing, elbow flexion	Yes	Activates muscle pump without stressing axillary incision
Wall-climbing shoulder exercises	No — later, as ordered	Premature shoulder motion risks seroma and wound disruption
Warm pack to axilla	No — avoid heat	Vasodilation increases capillary filtration and lymphedema risk
Sling immobilization until drain out	No	Immobility impairs lymphatic flow and promotes stiffness

The risk of BCRL is substantial in this patient. She has undergone ALND, which is the strongest surgical risk factor for lymphedema, and her tumor is stage IIB with positive nodes. The nursing-led strategies emphasized in the literature include early symptom recognition, perioperative prevention, and patient education about arm protection . Early systematic exercise initiated within two weeks after surgery has been associated with reduced lymphedema incidence and improved functional recovery, but the exercise must be phased and therapist-guided ^[2]. The first phase begins with distal movements — hand and elbow — before progressing to shoulder range of motion.

Watch out! Lymphedema can develop within 12 to 24 months after surgery, not only in the immediate postoperative period . The arm on the operative side must be protected long-term from blood pressure measurement, venipuncture, constrictive clothing, and thermal injury. Complete decongestive therapy remains the mainstay of non-surgical management once lymphedema develops .

The nurse’s role on the first postoperative day is to establish a foundation for lymphatic protection: position the arm to favor drainage, initiate only the prescribed distal exercises, and educate the patient about lifelong precautions for the affected extremity.