Atrial Septal Defect Clinical Trial
Official title:
The Effect on Endothelial Progenitor Cells (EPCs) by Successful Cardiac Occlusion Device Implantation
All patients awaiting to have either a left atrial appendage closure (LAA) or patent foramen
ovale (PFO) or Atrial Septal Defect (ASD) closure device as part of standard care will be
identified and reviewed in cardiology clinics. These patients will be placed on waiting list
to undergo the procedure. Patient-participants will be consented on the date of admission for
device closure implantation.
The study will recruit 20 patients divided into; 10 patients undergoing PFO/ASD closure and
10 patients undergoing LAA closure. EPC will be measured on the day of the device
implantation, day 0 and prior to discharge on day 1.
Patient participants are admitted overnight after the device closure implantation. Then on
subsequent out patient cardiology research clinic follow appointments on days (3-4) and
(7-8).
The objective of this study is to assess the effect, if any, on EPC count and cardiac device
implantation.
All patients awaiting LAA or PFO/ASD occlusion will firstly be reviewed in a cardiology
clinic and assessed. Suitable patients will then be placed on a waiting list for occlusion
device implantation and therefore identified as potential participants in the study.
Patient-participants will be informed of the trial and given a chance to participate, this
may be by face to face and or via invitation letter. All patient-participants will be given a
copy of the patient information sheet.
Formal consent to participate in the trial will occur on the morning of the procedure. This
will avoid repeated visits by patients that may have to travel some considerable distance.
The study will recruit 20 patients divided into; 10 patients undergoing PFO/ASD occlusion and
10 patients undergoing LAA occlusion. EPC will be measured on the day of the device
implantation, day 0 and prior to discharge on day 1, then on subsequent follow up
appointments on days (3-4) and (7-8). Blood samples of 3-5ml will be taken to allow flow
cytometric analysis for EPCs.
Standard follow up for participants may include transesophageal echocardiography (TOE) at 3
months after implantation. This will give a direct assessment of device related thrombus.
Currently TOE is not standard of care in PFO follow up. If a TOE result is available for
either group the investigators will use the results in our study.
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