Management of Venous Air Embolism During Shoulder Arthroscopy

Immediate Recognition and Initial Actions

The American College of Surgeons recommends immediately positioning the patient in left lateral decubitus head-down (Trendelenburg) position and administering 100% oxygen while stopping the arthroscopic pump to prevent further air entry, in cases of suspected venous air embolism 1
Critical first steps include positioning the patient in left lateral decubitus with head down to trap air in the right ventricular apex and prevent migration to pulmonary artery, and administering 100% normobaric oxygen to reduce air bubble size and improve tissue oxygenation 1, 2, 3

The American Heart Association recommends initiating aggressive hemodynamic support, including fluid resuscitation to increase central venous pressure, and administering vasopressors (norepinephrine or vasopressin) if hypotension persists to maintain coronary perfusion pressure 1, 2
Continuous monitoring of heart rate, blood pressure, and oxygen saturation is essential, as well as bedside echocardiography to assess right ventricular function and confirm air presence 1, 2

Attempt aspiration of air from the right atrium/right ventricle through existing central line, if central venous access is available, to prevent further air migration and reduce the air burden 1, 2

Consider hyperbaric oxygen therapy if available, particularly if paradoxical arterial air embolism is suspected (suggesting right-to-left shunt), for severe cases with neurological symptoms 3, 1
For persistent right ventricular dysfunction, consider pulmonary vasodilators such as inhaled nitric oxide or sildenafil, and avoid excessive fluid administration as this may worsen right ventricular distention 2

Failing to recognize subtle early signs (gradual drop in end-tidal CO₂) before cardiovascular collapse occurs, delaying position change and oxygen administration, and continuing to pump fluid/air after embolism is suspected, are critical errors that worsen outcomes 1