Surgical complications are unwanted problems that can occur during or after an operation. Although many surgeries are performed safely and successfully, every surgical procedure carries some level of risk. The likelihood of complications can vary depending on the type of surgery, the patient's health, and other factors.

Some surgical complications are relatively common and temporary. Pain, swelling, nausea, and fatigue can occur during recovery. Other complications may be more serious and require additional medical treatment.

Infection is one possible complication. Surgical wounds can become infected when bacteria enter the affected area. Warning signs may include increasing redness, swelling, warmth, drainage, fever, or worsening pain.

Bleeding is another potential concern. Small amounts of bleeding may be expected after certain procedures, but significant or persistent bleeding requires medical assessment.

Blood clots can also occur after surgery, particularly when mobility is reduced. Deep vein thrombosis can cause swelling or pain in a leg, while a clot that travels to the lungs can cause a potentially life-threatening pulmonary embolism.

Other surgical complications depend on the procedure being performed. Damage to surrounding tissues, reactions to anesthesia, delayed wound healing, and organ-specific problems are possible in certain operations.

Patients can reduce some risks by carefully following their healthcare team's instructions before and after surgery. This may include following medication instructions, stopping or adjusting certain medications when directed, following fasting requirements, keeping the wound clean, and gradually increasing physical activity when advised.

It is important for patients to understand the expected recovery process. Knowing what is normal can make it easier to recognize an unexpected problem.

Urgent symptoms such as severe difficulty breathing, chest pain, uncontrolled bleeding, loss of consciousness, sudden weakness, or rapidly worsening symptoms require immediate medical attention.

The presence of a complication does not necessarily mean that a surgical procedure was performed incorrectly. Some complications can occur even when appropriate medical care is provided. Healthcare professionals typically discuss relevant risks and benefits before surgery.

Understanding surgical complications can help patients prepare for procedures and recognize warning signs during recovery. Patients should ask their healthcare provider about procedure-specific risks, expected recovery, medication instructions, and when to seek urgent care.