The Experts below are selected from a list of 12468 Experts worldwide ranked by ideXlab platform
Mika Laine - One of the best experts on this subject based on the ideXlab platform.
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The Efficacy of the Ultrasound-Navigated Manta Deployment Following Transfemoral Transcatheter Aortic Valve Replacement
JACC. Cardiovascular interventions, 2019Co-Authors: Noriaki Moriyama, Sebastian Dahlbacka, Tommi Vähäsilta, Tiina Vainikka, Pekka Aho, Juho Viikilä, Olavi Lammintausta, Mika LaineAbstract:A new plug-based Manta (Teleflex, Morrisville, North Carolina) vascular closure device was recently introduced. Although prospective studies of Manta have reported promising results of a 2% to 4% rate of major vascular complications (VCs) in selected patients who underwent transfemoral transcatheter
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propensity matched comparison of vascular closure devices after transcatheter aortic valve replacement using Manta versus proglide
Eurointervention, 2019Co-Authors: Noriaki Moriyama, Linda Lindstrom, Mika LaineAbstract:Aims Vascular and bleeding complications increase morbidity and mortality in transcatheter aortic valve replacement (TAVR). However, data regarding the efficacy and safety of the Manta percutaneous vascular closure device (VCD) are scarce. The present study sought to compare VARC-2 complications between collagen plug-based closure using "Manta" and suture-based closure using "ProGlide" to evaluate the efficacy of the novel Manta VCD. Methods and results We performed a retrospective, propensity score-matched study to compare vascular and bleeding complications in 325 consecutive patients who underwent TAVR using Manta and ProGlide. The 1:1 propensity score matching resulted in 111 matched pairs. For Manta- versus ProGlide-treated patients, all-cause mortality (0% vs. 4%, p=0.02), vascular complications (14% vs. 21%, p=0.21), and bleeding complications (18% vs. 33%, p=0.01) were observed. Access-site vascular injury was significantly less frequent in patients who received Manta versus ProGlide (8% vs. 17%, p=0.04). Manta resulted in a significantly lower haemoglobin decrease (16.4 vs. 20.0 g/l, p=0.04) and shorter hospital stay after TAVR (3.3 vs. 5.8 days, p=0.02). It was also associated with fewer bleeding complications (OR 0.44, 95% CI: 0.23-0.83; p=0.01). Moreover, significant decreases of all endpoints were not seen across the procedure date tertiles in the Manta group. Conclusions Manta resulted in a significantly lower complication rate, especially for bleeding, than did ProGlide, despite the operators' inexperience in the use of Manta.
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TCT-802 A Novel Ultrasound-Navigated Versus Conventional Vascular Closing Technique Using Manta Following Transfemoral Transcatheter Aortic Valve Replacement
Journal of the American College of Cardiology, 2019Co-Authors: Noriaki Moriyama, Mika LaineAbstract:The incidence of major vascular complications (MVCs) using the Manta percutaneous vascular closure device (Teleflex, Carrington, North Carolina) following transfemoral transcatheter aortic valve replacement (TF-TAVR) in the real-world clinical setting is still unacceptable. Therefore, the Manta
Noriaki Moriyama - One of the best experts on this subject based on the ideXlab platform.
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The Efficacy of the Ultrasound-Navigated Manta Deployment Following Transfemoral Transcatheter Aortic Valve Replacement
JACC. Cardiovascular interventions, 2019Co-Authors: Noriaki Moriyama, Sebastian Dahlbacka, Tommi Vähäsilta, Tiina Vainikka, Pekka Aho, Juho Viikilä, Olavi Lammintausta, Mika LaineAbstract:A new plug-based Manta (Teleflex, Morrisville, North Carolina) vascular closure device was recently introduced. Although prospective studies of Manta have reported promising results of a 2% to 4% rate of major vascular complications (VCs) in selected patients who underwent transfemoral transcatheter
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propensity matched comparison of vascular closure devices after transcatheter aortic valve replacement using Manta versus proglide
Eurointervention, 2019Co-Authors: Noriaki Moriyama, Linda Lindstrom, Mika LaineAbstract:Aims Vascular and bleeding complications increase morbidity and mortality in transcatheter aortic valve replacement (TAVR). However, data regarding the efficacy and safety of the Manta percutaneous vascular closure device (VCD) are scarce. The present study sought to compare VARC-2 complications between collagen plug-based closure using "Manta" and suture-based closure using "ProGlide" to evaluate the efficacy of the novel Manta VCD. Methods and results We performed a retrospective, propensity score-matched study to compare vascular and bleeding complications in 325 consecutive patients who underwent TAVR using Manta and ProGlide. The 1:1 propensity score matching resulted in 111 matched pairs. For Manta- versus ProGlide-treated patients, all-cause mortality (0% vs. 4%, p=0.02), vascular complications (14% vs. 21%, p=0.21), and bleeding complications (18% vs. 33%, p=0.01) were observed. Access-site vascular injury was significantly less frequent in patients who received Manta versus ProGlide (8% vs. 17%, p=0.04). Manta resulted in a significantly lower haemoglobin decrease (16.4 vs. 20.0 g/l, p=0.04) and shorter hospital stay after TAVR (3.3 vs. 5.8 days, p=0.02). It was also associated with fewer bleeding complications (OR 0.44, 95% CI: 0.23-0.83; p=0.01). Moreover, significant decreases of all endpoints were not seen across the procedure date tertiles in the Manta group. Conclusions Manta resulted in a significantly lower complication rate, especially for bleeding, than did ProGlide, despite the operators' inexperience in the use of Manta.
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TCT-802 A Novel Ultrasound-Navigated Versus Conventional Vascular Closing Technique Using Manta Following Transfemoral Transcatheter Aortic Valve Replacement
Journal of the American College of Cardiology, 2019Co-Authors: Noriaki Moriyama, Mika LaineAbstract:The incidence of major vascular complications (MVCs) using the Manta percutaneous vascular closure device (Teleflex, Carrington, North Carolina) following transfemoral transcatheter aortic valve replacement (TF-TAVR) in the real-world clinical setting is still unacceptable. Therefore, the Manta
Fausto Biancari - One of the best experts on this subject based on the ideXlab platform.
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Manta versus proglide vascular closure devices in transfemoral transcatheter aortic valve implantation
International Journal of Cardiology, 2018Co-Authors: Fausto Biancari, Hannu Romppanen, Mikko Savontaus, Antti Siljander, Timo H Makikallio, Ollipekka Piira, Jarkko Piuhola, Viivi Vilkki, Antti YlitaloAbstract:Abstract Background The Manta system is a novel vascular closure device (VCD) and its safety and efficacy were compared to the ProGlide VCD in patients undergoing transfemoral transcatheter aortic valve implantation (TAVI). Methods This is a retrospective study including 222 patients who underwent transfemoral TAVI at three Finnish University Hospitals. The Manta VCD was used in 107 patients and their outcome was compared with that of 115 patients in whom the arterial access was closed with the ProGlide VCD. Results VARC-2 VCD failure occurred less frequently in the Manta cohort (3.7% vs. 7.8%, p = 0.378), but the difference did not reach statistical significance. When adjusted for the introducer outer diameter, the Manta cohort had similar rates of VARC-2 major vascular complications (9.3% vs. 12.2%, adjusted: p = 0.456), VARC-2 life-threatening/disabling bleeding (9.3% vs. 6.1%, adjusted: p = 0.296) and need of invasive treatment of bleeding (4.7% vs. 7.0%, adjusted: p = 0.416) compared to the ProGlide cohort. Additional VCDs were more frequently needed in the ProGlide cohort (58.3% vs. 1.9%, p Conclusions In patients undergoing transfemoral TAVI, the Manta VCD showed a similar risk of VARC-2 vascular and bleeding complications compared to the ProGlide VCD, but it reduced significantly the need of additional VCDs for completion of hemostasis.
Antti Ylitalo - One of the best experts on this subject based on the ideXlab platform.
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Manta versus proglide vascular closure devices in transfemoral transcatheter aortic valve implantation
International Journal of Cardiology, 2018Co-Authors: Fausto Biancari, Hannu Romppanen, Mikko Savontaus, Antti Siljander, Timo H Makikallio, Ollipekka Piira, Jarkko Piuhola, Viivi Vilkki, Antti YlitaloAbstract:Abstract Background The Manta system is a novel vascular closure device (VCD) and its safety and efficacy were compared to the ProGlide VCD in patients undergoing transfemoral transcatheter aortic valve implantation (TAVI). Methods This is a retrospective study including 222 patients who underwent transfemoral TAVI at three Finnish University Hospitals. The Manta VCD was used in 107 patients and their outcome was compared with that of 115 patients in whom the arterial access was closed with the ProGlide VCD. Results VARC-2 VCD failure occurred less frequently in the Manta cohort (3.7% vs. 7.8%, p = 0.378), but the difference did not reach statistical significance. When adjusted for the introducer outer diameter, the Manta cohort had similar rates of VARC-2 major vascular complications (9.3% vs. 12.2%, adjusted: p = 0.456), VARC-2 life-threatening/disabling bleeding (9.3% vs. 6.1%, adjusted: p = 0.296) and need of invasive treatment of bleeding (4.7% vs. 7.0%, adjusted: p = 0.416) compared to the ProGlide cohort. Additional VCDs were more frequently needed in the ProGlide cohort (58.3% vs. 1.9%, p Conclusions In patients undergoing transfemoral TAVI, the Manta VCD showed a similar risk of VARC-2 vascular and bleeding complications compared to the ProGlide VCD, but it reduced significantly the need of additional VCDs for completion of hemostasis.
Anthony J. Richardson - One of the best experts on this subject based on the ideXlab platform.
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Manta birostris, predator of the deep? Insight into the diet of the giant Manta ray through stable isotope analysis
Royal Society Open Science, 2016Co-Authors: Katherine B. Burgess, Lydie I.e. Couturier, Scarla J. Weeks, Anthony J. Richardson, Andrea D. Marshall, Michael B. BennettAbstract:The characterization of diet for the giant Manta ray Manta birostris has been problematic given their large-scale movement patterns and the difficulty in obtaining stomach contents from this species. The large majority of existing information is based on observational data limited to feeding events at the sea surface during daylight. Recently discovered aggregation sites for the giant Manta ray off mainland Ecuador are some of the most accessible to date and provide a unique opportunity for researchers to gather much needed information on this elusive species. To assess how important surface zooplankton is to giant Manta ray diet, we conducted stable isotope analysis (N-15 and C-13) on M. birostris muscle and surface zooplankton. Trophic position estimates placed M. birostris overall at a secondary consumer level of approximately 3.4 but there was large variation in delta N-15 and delta C-13 values among individuals. Manta birostris muscle tissue delta C-13 values were also not consistent with this species feeding predominantly on surface zooplankton and suggest that the majority of dietary intake is of mesopelagic origin. Given the conservative life history and fisheries pressure on large planktivores, knowledge of their trophic role and foraging strategies is essential to better understand their ecology and develop effective conservation measures.
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Prey Density Threshold and Tidal Influence on Reef Manta Ray Foraging at an Aggregation Site on the Great Barrier Reef
PLoS ONE, 2016Co-Authors: Asia O. Armstrong, F. R A Jaine, Amelia J. Armstrong, Lydie I.e. Couturier, Kym Fiora, Julian Uribe-palomino, Scarla J. Weeks, Kathy A. Townsend, Mike B. Bennett, Anthony J. RichardsonAbstract:Large tropical and sub-tropical marine animals must meet their energetic requirements in a largely oligotrophic environment. Many planktivorous elasmobranchs, whose thermal ecologies prevent foraging in nutrient-rich polar waters, aggregate seasonally at predictable locations throughout tropical oceans where they are observed feeding. Here we investigate the foraging and oceanographic environment around Lady Elliot Island, a known aggregation site for reef Manta rays Manta alfredi in the southern Great Barrier Reef. The foraging behaviour of reef Manta rays was analysed in relation to zooplankton populations and local oceanography, and compared to long-term sighting records of reef Manta rays from the dive operator on the island. Reef Manta rays fed at Lady Elliot Island when zooplankton biomass and abundance were significantly higher than other times. The critical prey density threshold that triggered feeding was 11.2 mg m(-3) while zooplankton size had no significant effect on feeding. The community composition and size structure of the zooplankton was similar when reef Manta rays were feeding or not, with only the density of zooplankton changing. Higher zooplankton biomass was observed prior to low tide, and long-term (similar to 5 years) sighting data confirmed that more reef Manta rays are also observed feeding during this tidal phase than other times. This is the first study to examine prey availability at an aggregation site for reef Manta rays and it indicates that they feed in locations and at times of higher zooplankton biomass.
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stable isotope and signature fatty acid analyses suggest reef Manta rays feed on demersal zooplankton
PLOS ONE, 2013Co-Authors: F. R A Jaine, Christoph A. Rohner, Lydie I.e. Couturier, Anthony J. Richardson, Andrea Marshall, M B BennettAbstract:Assessing the trophic role and interaction of an animal is key to understanding its general ecology and dynamics. Conventional techniques used to elucidate diet, such as stomach content analysis, are not suitable for large threatened marine species. Non-lethal sampling combined with biochemical methods provides a practical alternative for investigating the feeding ecology of these species. Stable isotope and signature fatty acid analyses of muscle tissue were used for the first time to examine assimilated diet of the reef Manta ray Manta alfredi, and were compared with different zooplankton functional groups (i.e. near-surface zooplankton collected during Manta ray feeding events and non-feeding periods, epipelagic zooplankton, demersal zooplankton and several different zooplankton taxa). Stable isotope δ15N values confirmed that the reef Manta ray is a secondary consumer. This species had relatively high levels of docosahexaenoic acid (DHA) indicating a flagellate-based food source in the diet, which likely reflects feeding on DHA-rich near-surface and epipelagic zooplankton. However, high levels of ω6 polyunsaturated fatty acids and slightly enriched δ13C values in reef Manta ray tissue suggest that they do not feed solely on pelagic zooplankton, but rather obtain part of their diet from another origin. The closest match was with demersal zooplankton, suggesting it is an important component of the reef Manta ray diet. The ability to feed on demersal zooplankton is likely linked to the horizontal and vertical movement patterns of this giant planktivore. These new insights into the habitat use and feeding ecology of the reef Manta ray will assist in the effective evaluation of its conservation needs.
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Trends in sightings and environmental influences on a coastal aggregation of Manta rays and whale sharks
Marine Ecology Progress Series, 2013Co-Authors: Christoph A. Rohner, Scarla J. Weeks, Andrea Marshall, Simon J. Pierce, Michael B. Bennett, Anthony J. RichardsonAbstract:Sightings of planktivorous elasmobranchs at their coastal aggregation sites are often linked to biological, environmental and temporal variables. Many large planktivorous elasmobranchs are also globally threatened species, so it is necessary to try and separate population trends from environmentally driven, short-term fluctuations. We investigated the influence of environmental variables on sightings of 3 species of planktivorous elasmobranchs off Praia do Tofo, Mozambique: the reef Manta ray Manta alfredi, giant Manta ray M. birostris and whale shark Rhincodon typus. We used 8- (2003 to 2011) and 6-yr (2005 to 2011) logbook data for Manta rays and whale sharks, respectively, and constructed a generalised linear model with animal sightings as the response. Predictors included temporal (year, month, time of day), biological (plankton categories), oceanographic (water temperature, time from high tide, current direction and strength and wave height) and celestial (moon illumination) indices. These predictors best fitted reef Manta ray sightings, a coastal species with high residency, but less so for the wider-ranging giant Manta rays and whale sharks. We found a significant decline in the standardised sightings time series for the reef Manta ray (88%) and whale shark (79%), but not for the giant Manta ray.
