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Initial results of wireless pressure sensing for endovascular aneurysm repair: The APEX Trial—Acute Pressure Measurement to Confirm Aneurysm Sac EXclusion 

Published byIda Lesmana Modified over 5 years ago

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Presentation on theme: "Initial results of wireless pressure sensing for endovascular aneurysm repair: The APEX Trial—Acute Pressure Measurement to Confirm Aneurysm Sac EXclusion "— Presentation transcript:

1 Initial results of wireless pressure sensing for endovascular aneurysm repair: The APEX Trial—Acute Pressure Measurement to Confirm Aneurysm Sac EXclusion  Takao Ohki, MD, PhD, Kenneth Ouriel, MD, Pierre Galvagni Silveira, MD, Barry Katzen, MD, Rodney White, MD, Frank Criado, MD, Edward Diethrich, MD  Journal of Vascular Surgery  Volume 45, Issue 2, Pages (February 2007) DOI: /j.jvs Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

2 Fig 1 The EndoSure sensor. Top: Schematic cross section of the sensor. Bottom: Fabricated sensor. The basket surrounding the sensor has no electrical functionality but acts to keep the sensor centered within the sac. The sensor is approximately 5 mm wide and 30 mm long so as to sample a reasonable fraction of the large volume of the aneurysm sac. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

3 Fig 2 External monitor and the antenna.
Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

4 Fig 3 A, The EndoSure sensor delivery sheath with a radiopaque tip marker (R) is introduced over the stiff wire after wire access has been obtained for the main body delivery or after the endograft delivery sheath (D) has been introduced. M, Metal jacket that contains the EndoSure sensor. B, The sensor delivery sheath and the metal jacket are retrieved while the sensor (S) position is maintained with the tether wire. The arrow denotes the radiopaque markers placed at both ends of the EndoSure sensor. C, Once the sensor delivery sheath has been withdrawn, a pigtail catheter is introduced over the existing stiff wire, and angiography is performed for endograft deployment while the sensor (S) is kept inside the sac. Calibration of the sensor and baseline sac pressure measurement with both the angiographic catheter and the sensor are also performed at this time. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

5 Fig 4 Correlation of mean sac pressure at the first pressure reading between EndoSure sensor and the angiographic catheter positioned in the aneurysm sac. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

6 Fig 5 Comparison between sac pulse pressure before and after endovascular aneurysm repair (EVAR). A significant reduction was seen with EVAR (P < .05). Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

7 Fig 6 Completion angiogram following EVAR. A: Pre-operative angiogram shows an infra-renal AAA with enough space for the Endograft and the EndoSure Sensor. B: Early phase of the completion angiogram shows an Endoleak (E) possibly communicating with the inferior mesenteric artery (I). C: Latter phase angiogram clearly shows the Endoleak (E) and the communication with the inferior mesenteric artery. The entire aneurysm sac was opacified with contrast material. However, the significance and the origin of the Endoleak were not clear. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

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