Cardiac restraint devices are implantable cardiac devices which aim to reduce ventricular wall stress, improve systolic function and reduce cardiac remodelling.
Cardiac restraint devices act to support the ventricular wall with an elastic mesh network which offers passive pressure to support the ventricular wall 1. It is inserted through a mini-thoracotomy. Studies have shown such devices successfully reduce cardiac remodelling and improve systolic function and the symptoms of heart failure but do not offer a survival benefit 2,3.
The HeartNetTM device was the most popular type of cardiac restraint device, however, it has been discontinued 1.
The HeartNetTM device is visible on chest radiograph as a radiopaque mesh-like net that follows the cardiac contour 1.
- 1. Sigakis CJG, Mathai SK, Suby-Long TD, Restauri NL, Ocazionez D, Bang TJ, Restrepo CS, Sachs PB, Vargas D. Radiographic Review of Current Therapeutic and Monitoring Devices in the Chest. (2018) Radiographics : a review publication of the Radiological Society of North America, Inc. 38 (4): 1027-1045. doi:10.1148/rg.2018170096 - Pubmed
- 2. Starling RC, Jessup M, Oh JK, Sabbah HN, Acker MA, Mann DL, Kubo SH. Sustained benefits of the CorCap Cardiac Support Device on left ventricular remodeling: three year follow-up results from the Acorn clinical trial. (2007) The Annals of thoracic surgery. 84 (4): 1236-42. doi:10.1016/j.athoracsur.2007.03.096 - Pubmed
- 3. Costanzo MR, Ivanhoe RJ, Kao A, Anand IS, Bank A, Boehmer J, Demarco T, Hergert CM, Holcomb RG, Maybaum S, Sun B, Vassiliades TA, Rayburn BK, Abraham WT. Prospective evaluation of elastic restraint to lessen the effects of heart failure (PEERLESS-HF) trial. (2012) Journal of cardiac failure. 18 (6): 446-58. doi:10.1016/j.cardfail.2012.04.004 - Pubmed