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Silva NP, Amin B, Dunne E, Hynes N, O’Halloran M, Elahi A. Implantable Pressure-Sensing Devices for Monitoring Abdominal Aortic Aneurysms in Post-Endovascular Aneurysm Repair. SENSORS (BASEL, SWITZERLAND) 2024; 24:3526. [PMID: 38894317 PMCID: PMC11175030 DOI: 10.3390/s24113526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024]
Abstract
Over the past two decades, there has been extensive research into surveillance methods for the post-endovascular repair of abdominal aortic aneurysms, highlighting the importance of these technologies in supplementing or even replacing conventional image-screening modalities. This review aims to provide an overview of the current status of alternative surveillance solutions for endovascular aneurysm repair, while also identifying potential aneurysm features that could be used to develop novel monitoring technologies. It offers a comprehensive review of these recent clinical advances, comparing new and standard clinical practices. After introducing the clinical understanding of abdominal aortic aneurysms and exploring current treatment procedures, the paper discusses the current surveillance methods for endovascular repair, contrasting them with recent pressure-sensing technologies. The literature on three commercial pressure-sensing devices for post-endovascular repair surveillance is analyzed. Various pre-clinical and clinical studies assessing the safety and efficacy of these devices are reviewed, providing a comparative summary of their outcomes. The review of the results from pre-clinical and clinical studies suggests a consistent trend of decreased blood pressure in the excluded aneurysm sac post-repair. However, despite successful pressure readings from the aneurysm sac, no strong link has been established to translate these measurements into the presence or absence of endoleaks. Furthermore, the results do not allow for a conclusive determination of ongoing aneurysm sac growth. Consequently, a strong clinical need persists for monitoring endoleaks and aneurysm growth following endovascular repair.
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Affiliation(s)
- Nuno P. Silva
- Translational Medical Device Lab, University of Galway, H91 TK33 Galway, Ireland; (B.A.); (E.D.); (M.O.)
- Electrical and Electronic Engineering, University of Galway, H91 TK33 Galway, Ireland
| | - Bilal Amin
- Translational Medical Device Lab, University of Galway, H91 TK33 Galway, Ireland; (B.A.); (E.D.); (M.O.)
- Electrical and Electronic Engineering, University of Galway, H91 TK33 Galway, Ireland
- School of Medicine, University of Galway, H91 TK33 Galway, Ireland
| | - Eoghan Dunne
- Translational Medical Device Lab, University of Galway, H91 TK33 Galway, Ireland; (B.A.); (E.D.); (M.O.)
- Electrical and Electronic Engineering, University of Galway, H91 TK33 Galway, Ireland
- School of Medicine, University of Galway, H91 TK33 Galway, Ireland
| | - Niamh Hynes
- Western Vascular Institute, Galway Clinic, Doughiska Road, H91 HHT0 Galway, Ireland;
| | - Martin O’Halloran
- Translational Medical Device Lab, University of Galway, H91 TK33 Galway, Ireland; (B.A.); (E.D.); (M.O.)
- Electrical and Electronic Engineering, University of Galway, H91 TK33 Galway, Ireland
- School of Medicine, University of Galway, H91 TK33 Galway, Ireland
| | - Adnan Elahi
- Translational Medical Device Lab, University of Galway, H91 TK33 Galway, Ireland; (B.A.); (E.D.); (M.O.)
- Electrical and Electronic Engineering, University of Galway, H91 TK33 Galway, Ireland
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Aneurysm Sac pressure measurement with minimally invasive implantable pressure sensors: an alternative to current surveillance regimes after EVAR? Cardiovasc Intervent Radiol 2007; 31:460-7. [PMID: 18087767 DOI: 10.1007/s00270-007-9245-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2007] [Revised: 10/30/2007] [Accepted: 11/08/2007] [Indexed: 10/22/2022]
Abstract
Current protocols for surveillance after endovascular repair (EVAR) of abdominal aortic aneurysms are mostly based on costly and time-consuming imaging procedures and aim to detect adverse events such as graft migration, endoleaks or aneurysm sac enlargement. These imaging procedures are either associated with radiation exposure to the patients or may be harmful to the patient due to the use of iodine- or gadolinium-containing contrast agents. Furthermore the advantages of EVAR in the short term might be negated by the necessity for endograft surveillance over years. Thus, alternative modalities for follow-up are being investigated. One of these technologies provides pressure information directly from the aneurysm sac. This noninvasive, telemetric pressure sensing was tested in vitro as well as in first clinical trials and was able to identify successful aneurysm exclusion after EVAR. The telemetric pressure sensors showed a promising efficacy and accuracy in detecting type I and type III endoleaks and will help to clarify the clinical relevance of type II endoleaks. This article provides an overview of the in vitro sensors investigated as well as the first clinical trials and the sensors' potential to change the current endograft surveillance regimes.
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