The account alleges that during the early stages of the procedure (vascular access) a trans-esophageal-echocardiography (tee) was performed and a small pericardial effusion noted whilst the patient was in a hypertensive state.The decision was made by the treating clinician to continue the case using the tsx fixed sheath and tsx needle, on which the operator was also properly trained.The devices were inserted in order to probe the intra-atrial septum for a sufficient spot to reach the left atrium.During the probing, an increase of the formerly mentioned pericardial effusion was detected in the tee and before the passage of the septum occurred a pericardial puncture was deemed necessary by the clinician in order to mitigate the problem and return to a stable state for the patient.As per the ifu of the system, the clinician as advised that an elevated act <300sec.Had to be maintained during the entire left atrial dwell-time of the catheter and that failure to do so could potentially have a negative effect on the pericardial tamponade.The clinician decided to move forward and perform the transseptal puncture under constant tee supervision and exchanging the tsx sheath for the polarsheath without problems.During the next step of catheter preparation, outside the patient, a significant hypotension was observed which led to another examination via tee.It was found there was further volume increase of the pericardial tamponade resulting in another pericardial puncture and ultimately the cancellation of the planned pvi without the polarx ablation catheter ever being inserted in the patient.
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