The injury, esophageal transmural lesion, is a not infrequent complication of the cardiac af ablation procedure using an ablation catheter and rf generator.Causes can be also associated to pre-existing lesions / damages to the esophageal mucosa due to the patient's conditions or previous clinical treatments.The specific cause of the esophageal transmural lesion in this case is not known.The device esotest multi probe is a probe part of a temperature measurement system that has no active part in the ablation procedure.No malfunctions of the device have been reported during use.Although the sample of the device was discarded and not available for examination, the temperature data recorded by the esotest monitor during its use show that the probe sensed a higher temperature on the most distal temperature sensor t1 (the first one of the seven temperature sensors t1.T7 placed on a sensor's array) during the ablations performed.This indicates that: a) the probe functioned as expected in measuring temperature; b) the higher temperature was on the side of the distal end of the probe and c) the temperature gradient of the sensors, increasing towards t1, suggests that the point of greatest thermal increase was beyond the area covered by the sensors array, beyond t1 and in this area the temperature increase may have been even much higher.
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