MikeLigalig.com

Short DTB time, less radiation for hybrid angiography unit PCI


Primary percutaneous coronary intervention (PCI) can be safely performed in a hybrid angiography unit without compromising door-to-balloon (DTB) time and with less radiation, according to a Singapore study presented at the ASEAN Federation of Cardiology Congress (AFCC) 2016.

Mean fluoroscopy time was remarkably similar between the hybrid angiography unit and the conventional angiography unit (17.66 vs 20.06 mins) as was X-ray time (p=0.43). The DTB time was 55 mins in the hybrid unit vs 52 mins in the conventional angiography unit. However, there was a significant difference in the X-ray skin dose between the two groups at 486.76 and 705.71 mGy, respectively. [AFCC 2016, abstract P17]

This means less radiation exposure to the patient, wrote researchers Neil Wilkinson and Paul JL Ong from the Department of Cardiology, Tan Tock Seng Hospital, Singapore, which could be due to a slight difference in the field of view between the two angiographic systems (16cm2 for hybrid vs 15cm2 for conventional). They sought to investigate if there is any dose difference between emergency interventional procedures performed in a hybrid vs a conventional angiography unit (21 cases each). Acquisition protocol for both systems were similarly calibrated. Fluoroscopy and DTB time were compared, as well as X-ray skin dose.

Interventional cardiologists move with precision to save patient lives. Emergency PCI should be carried out in the shortest DTB time. The American College of Cardiology and the American Heart Association (ACC/AHA) guidelines recommend a door-to-balloon interval of no more than 90 minutes in patients with ST segment elevation myocardial infarction (STEMI) requiring primary PCI.

Linkback: https://tubagbohol.mikeligalig.com/index.php?topic=85244.0