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Intermittent pneumatic compression

Therapeutic technique

Intermittent pneumatic compression

Therapeutic technique

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In use, an inflatable jacket (sleeve, glove, trousers or boot) encloses the limb requiring treatment, and pressure lines are connected between the jacket and the air pump. When activated, the pump fills the air chambers of the jacket in order to pressurize the tissues in the limb, thereby forcing fluids, such as blood and lymph, out of the pressurized area. A short time later, the pressure is reduced, allowing increased blood flow back into the limb.

The primary functional aim of the device "is to squeeze blood from the underlying deep veins, which, assuming that the valves [in those veins] are competent, will be displaced proximally." When the inflatable sleeves deflate, the veins will replenish with blood. The intermittent compressions of the sleeves will ensure the movement of venous blood.

Sequential compression devices

Sequential compression devices (SCD) utilize sleeves with separated areas or pockets of inflation, which works to squeeze on the appendage in a "milking action." The most distal areas will initially inflate, and the subsequent pockets will follow in the same manner.

Sequential calf compression and graduated compression stockings are currently the preferred prophylaxis in neurosurgery for the prevention of DVT and pulmonary embolism, sometimes in combination with low molecular weight heparins or unfractionated heparin.

Intraoperative SCD-therapy is recommended during prolonged laparoscopic surgery to counter altered venous blood return from the lower extremities and consequent cardiac depression caused by pneumoperitoneum (inflation of the abdomen with carbon dioxide).

Patient falls

Some clinicians are hesitant to prescribe SCD therapy because of a perceived increased risk for patient falls. A 2011 review of 3,562 hospital falls identified 16 associated with SCD therapy and measured the impacts of each fall. It concluded that SCD "is rarely associated with in-hospital patient falls, and SCD-related falls are not more harmful than other types of falls."

References

References

  1. (2012). "Prevention of VTE in Nonorthopedic Surgical Patients: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines". Chest.
  2. (2004). "Evidence-Based Compression". Annals of Surgery.
  3. (2005). "Risk factors and prophylaxis for deep venous thrombosis in neurosurgery". Surg Technol Int.
  4. (April 2002). "Perspectives in sequential pneumatic compression of the lower extremities (SCD) for laparoscopic surgery". Acta Chir. Belg..
  5. Boelig MM, Streiff MB, Hobson DB, Kraus PS, Pronovost PJ, Haut ER. (June 2011). "Are sequential compression devices commonly associated with in-hospital falls? A myth-busters review using the patient safety net database". J Patient Saf.
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