What is Electrosurgery? Cut and Seal with Precision!

Electrosurgery, also known as electrocautery or diathermy, is a surgical technique that uses high-frequency electric current to cut, coagulate, and seal tissue. It is a popular alternative to traditional surgical methods that involve cutting with a scalpel or using a laser. Electrosurgery is widely used in many medical fields, including plastic surgery, gynecology, urology, and dermatology.

The technique requires a specialized device called an electrosurgical unit (ESU) that provides an electrical current to a surgical instrument. The instrument, which can be a probe, forceps, or scalpel, heats up when it comes in contact with tissue, causing it to cut or cauterize. The heat generated by the current can also be used to seal blood vessels to stop bleeding and coagulate tissue to prevent infection.

How Does Electrosurgery Work?

Electrosurgery works by generating an electric current in the tissue. The current is delivered by the ESU to the surgical instrument, which is designed to conduct the current to the tissue. Depending on the setting used by the surgeon, the current can cut or coagulate tissue. The current also produces heat, which can be used to seal blood vessels and prevent blood loss. The surgeon can control the current’s intensity and duration to achieve precise surgical outcomes.

The Components of an Electrosurgical Unit(ESU)

The ESU consists of several parts, including:

  • A generator or power source, which produces the high-frequency electric current.
  • An active electrode, which delivers the electric current to the tissue.
  • A patient return electrode, which completes the electric circuit and returns the current to the generator.
  • A dispersive electrode, which is placed on the patient’s skin to prevent burns and to provide an efficient return path for the current.

Types of Electrosurgery

There are two types of electrosurgery: monopolar and bipolar.

Monopolar Electrosurgery

Monopolar electrosurgery is the most common type of electrosurgery. It uses a single active electrode, which is placed on the tissue to be cut or coagulated. The current then flows through the tissue and returns to the ESU through the dispersive electrode on the patient’s skin.

Bipolar Electrosurgery

Bipolar electrosurgery uses a pair of electrodes that are both placed on the tissue to be cut or coagulated. The current flows between the two electrodes, which are close together, and does not pass through the rest of the patient’s body. This makes bipolar electrosurgery safer for delicate procedures, such as those on the eyes or brain.

Advantages of Electrosurgery

Here are some advantages of electrosurgery over traditional surgical methods:

  • Can be used to cut, coagulate, and seal tissue.
  • Causes less bleeding.
  • Reduces the risk of infection.
  • Can be used on a variety of tissues and organs.
  • Enables precise surgical control.
  • Can be performed quickly and with minimal scarring.

Applications of Electrosurgery

Electrosurgery is widely used in many medical fields, including:

  • Plastic surgery: for skin resurfacing, scar revision, and wrinkle removal.
  • Gynecology: for hysterectomies, ovary removal, and endometrial ablation.
  • Urology: for prostate surgery and kidney stone removal.
  • Dermatology: for the removal of moles, warts, and skin tags.
  • Ophthalmology: for blepharoplasty and other eye surgeries.
  • Orthopedics: for joint surgery and bone removal.
  • ENT: for tonsillectomies and other ear, nose, and throat surgeries.

Risks and Complications of Electrosurgery

Like any surgical procedure, electrosurgery has risks and complications. These can include:

  • Burns to the skin and other tissues.
  • Damage to internal organs and tissues.
  • Bleeding and hematoma formation.
  • Infection.
  • Fluid imbalance or electrolyte disturbances.
  • Nerve damage.
  • Cardiac arrest or other electrical disturbances in the heart.
  • Allergic reactions to the anesthesia or other medication.

Preparing for Electrosurgery

Here are some steps you can take to prepare for electrosurgery:

  • Follow any instructions provided by your doctor or surgeon regarding eating, drinking and medication before the procedure.
  • Arrange for transportation to and from the surgical center.
  • Wear loose, comfortable clothing that is easy to change out of.
  • Inform your doctor of any allergies, medical conditions or medications you are taking.
  • Ask your doctor or surgeon any questions you may have about the procedure.
  • Make sure to fast for the appropriate number of hours, depending on the type of surgery you will undergo.

Recovering from Electrosurgery

Recovery from electrosurgery depends on the type of surgery and the individual patient. Here are some general guidelines:

  • You may experience some pain, swelling, and bruising. Over-the-counter pain relievers and ice packs can help.
  • Your doctor may prescribe medication for pain relief and to prevent infection.
  • Take care to keep the surgical site clean and dry. Follow any instructions provided by your doctor or surgeon regarding wound care.
  • Avoid strenuous exercise or heavy lifting for a period of time recommended by your doctor.
  • Attend follow-up appointments to monitor your progress and check for any complications.


Electrosurgery is an important surgical technique that offers many advantages over traditional surgical methods. It is used in a variety of medical fields and can be used to cut, coagulate, and seal tissue with precision. While there are risks and complications associated with electrosurgery, these can be minimized by following proper preparation and recovery protocols.

Common Questions and Answers

Some common questions and their answers related to electrosurgery:

  • Is electrosurgery painful?

    Electrosurgery can cause some pain during and after the procedure. Your doctor or surgeon may offer localized anesthesia to reduce any pain or discomfort.
  • Who can perform electrosurgery?

    Electrosurgery should be performed by trained medical professionals, such as surgeons or dermatologists.
  • What are the benefits of electrosurgery over traditional surgery?

    Electrosurgery can result in less bleeding, less scarring and faster recovery times. Additionally, it can be used on a variety of tissues and organs and enables more precise surgical control.
  • Are there any risks associated with electrosurgery?

    There are risks associated with all surgical procedures. The risks associated with electrosurgery include burns to the skin and other tissues, infection and nerve damage.


  • Neligan, P. C. (2017). Plastic surgery. Elsevier Health Sciences.
  • Baker, R. S., & Hertzog, J. H. (Eds.). (2010). Pediatric anesthesia: basic principles-state of the art-future. Springer Science & Business Media.
  • Worden, M. (2011). Electrocautery. Journal of perioperative practice, 21(12), 441-444.

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