A case report of rapid diagnosis of atrial-oesophageal fistula by transthoracic echocardiogram with agitated saline injection.

In the case presented, as often happens, the diagnosis of AOF was delayed for several days, during which the patient presented with septic shock and concomitant multiorgan failure. The high mortality rate associated with AOF is partially attributable to delayed diagnosis. As prompt surgical intervention offers the best chance of survival, a high level of suspicion is of the utmost importance. We suggest contrast-enhanced TTE as a potential diagnostic tool when a rapid and definitive diagnosis is crucial and CT is inconclusive. Since this procedure is not without risk, proper risk consideration and management are necessary.