Objectives: To investigate the efficacy of gravitational displacement following vitrectomy for the patients with submacular haemorrhage (SMH) secondary to age-related macular degeneration (AMD).
Methods: Retrospective, interventional series of nine consecutive AMD patients with SMH. All patients underwent pars plana vitrectomy (PPV) combined with subretinal tissue plasminogen activator (t-PA) and intravitreal anti-vascular endothelial growth factor (anti-VEGF) injection without any tamponade. The patients were positioned according to the location and distribution of SMH postoperatively in order to provide the maximum gravitational force effect to displace. Outcome measures were the change in visual acuity, the displacement in SMH, and the occurrence of per- and postoperative complications.
Results: Complete displacement of haemorrhage occurred in all patients postoperatively. The mean preoperative and postoperative best-corrected visual acuity (BCVA) at the last visit were 2.46 and 1.7 logMAR, respectively, after a mean follow-up of 10.4 months (Range: 3-18 months) (p = 0.045). The mean duration of haemorrhage was 15.3 days (range: 3-40 days). The recurrence of SMH was observed in two (22%) patients and there were no other postoperative complications.
Conclusion: Gravitational displacement following PPV combined with subretinal t-PA and intravitreal anti-VEGF injection can be considered as an effective surgical intervention in selected AMD patients with SMH.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7253466 | PMC |
http://dx.doi.org/10.1038/s41433-019-0720-8 | DOI Listing |
Mil Med
December 2024
Clinical and Operational Space Medicine Innovation Consortium (COSMIC), 59th Medical Wing, Lackland Air Force Base, TX 78236, USA.
Introduction: Commercial off-the-shelf (COTS) intravenous fluid (IVF) containers contain residual air, introducing the risk of venous air embolism (VAE). Venous air embolism occurs when air displaces blood flow in vasculature. The danger from residual air is often negligible in terrestrial settings, where gravitational forces generate buoyancy, pushing residual air to the top of the IVF container.
View Article and Find Full Text PDFData Brief
April 2024
Universidad Autónoma de Nuevo León (UANL), Facultad de Ingeniería Civil (FIC), Departamento de Estructuras, Av. Universidad, s/n CP. 66455, San Nicolás de los Garza, Nuevo León, México.
The uniaxial compressive strength is a main parameter to be considered in design of masonry structures, particularly due to gravitational loads. This dataset collection comprises test on various masonry prisms made of hollow concrete blocks. These prisms are divided into three groups: prisms consisting of 2, 3, and 4 courses, respectively.
View Article and Find Full Text PDFTilt-to-length (TTL) coupling, caused by the jitter of test masses or satellites, is a major noise source in space-based gravitational wave detection. Calibrating and suppressing TTL coupling noise at the sub-nanometer level is essential. A key challenge in current ground-based TTL coupling testing is the residual translational movement of the tilt actuator.
View Article and Find Full Text PDFSci Rep
November 2024
National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing, 210093, China.
Solid Earth tide represents the response of solid Earth to the lunar (solar) gravitational force. The yielding solid Earth due to the force has been thought to be a prolate ellipsoid since the time of Lord Kelvin, yet the ellipsoid's geometry such as major semi-axis's length, minor semi-axis's length, and flattening remains unresolved. Additionally, the tidal displacement of reference point is conventionally resolved through a combination of expanded potential equations and given Earth model.
View Article and Find Full Text PDFCrit Care Explor
October 2024
Division of Cardiac Surgery, Department of Surgery, Johns Hopkins Hospital, Baltimore, MD.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!