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1. Impact of Tricuspid Regurgitation on Clinical Outcomes: The COAPT Trial

Author

Hahn R. T., Asch F., Weissman N. J., Grayburn P., Kar S., Lim S., Ben-Yehuda O., Shahim B., Chen S., Liu M., Redfors B., Medvedofsky D., Puri R., Kapadia S., Sannino A., Lindenfeld J., Abraham W. T., Mack M. J., Stone G. W., Hahn, R. T., Asch, F., Weissman, N. J., Grayburn, P., Kar, S., Lim, S., Ben-Yehuda, O., Shahim, B., Chen, S., Liu, M., Redfors, B., Medvedofsky, D., Puri, R., Kapadia, S., Sannino, A., Lindenfeld, J., Abraham, W. T., Mack, M. J., and Stone, G. W.

Subjects
Aged, 80 and over, Heart Failure, Male, Mitral Valve Insufficiency, Middle Aged, Surgical Instrument, Tricuspid Valve Insufficiency, Follow-Up Studie, Treatment Outcome, Echocardiography, Female, mitral regurgitation, tricuspid regurgitation, Aged, Human
Abstract

Background: The presence of tricuspid regurgitation (TR) may affect prognosis in patients with mitral regurgitation (MR). Objectives: This study sought to determine the impact of TR on outcomes in patients with heart failure and severe secondary MR randomized to guideline-directed medical therapy (GDMT) or edge-to-edge repair with the MitraClip in the COAPT (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy for Heart Failure Patients With Functional Mitral Regurgitation) trial. Methods: A total of 614 patients with symptomatic heart failure with moderate to severe (3+) or severe (4+) secondary MR were randomized to maximally tolerated GDMT plus MitraClip or GDMT alone; 599 had core laboratory evaluable echocardiograms. Patients were divided into 2 groups by baseline TR severity: none/trace/mild TR (≤Mild TR) (n = 501 [83.6%]) and moderate/severe TR (≥Mod TR) (n = 98 [16.4%]). Two-year composite endpoints of death or heart failure hospitalization (HFH) and the individual endpoints were analyzed. Results: Patients with ≥Mod TR were more likely to be New York Heart Association functional class III/IV (p < 0.0001) and have a Society of Thoracic Surgeons score of ≥8 (p < 0.0001), anemia (p = 0.02), chronic kidney disease (p = 0.003), and higher N-terminal pro–B-type natriuretic peptide (p = 0.02) than those with ≤Mild TR. Patients with ≥Mod TR had more severe MR (p = 0.0005) despite smaller left ventricular volumes (p = 0.005) and higher right ventricular systolic pressure (p < 0.0001). At 2 years, the composite rate of death or HFH was higher in patients with ≥Mod TR compared with ≤Mild TR treated with GDMT alone (83.0% vs. 64.3%; hazard ratio: 1.74; 95% confidence interval: 1.24 to 2.45; p = 0.001) but not following MitraClip (48.2% vs. 44.0%; hazard ratio: 1.14; 95% confidence interval: 0.71 to 1.84; p = 0.59). Rates of death or HFH, as well as death and HFH alone, were reduced by MitraClip compared with GDMT, irrespective of baseline TR grade (pinteraction = 0.16, 0.29, and 0.21 respectively). Conclusions: Patients with severe secondary MR who also had ≥Mod TR had worse clinical and echocardiographic characteristics and worse clinical outcomes compared to those with ≤Mild TR. Within the COAPT trial, MitraClip improved outcomes in patients with and without ≥Mod TR severity compared with GDMT alone. (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy for Heart Failure Patients With Functional Mitral Regurgitation [COAPT]; NCT01626079)

Published
2020

2. Pulmonary Hypertension in Transcatheter Mitral Valve Repair for Secondary Mitral Regurgitation: The COAPT Trial

Author

Ben-Yehuda O., Shahim B., Chen S., Liu M., Redfors B., Hahn R. T., Asch F. M., Weissman N. J., Medvedofsky D., Puri R., Kapadia S., Sannino A., Grayburn P., Kar S., Lim S., Lindenfeld J., Abraham W. T., Mack M. J., Stone G. W., Ben-Yehuda, O., Shahim, B., Chen, S., Liu, M., Redfors, B., Hahn, R. T., Asch, F. M., Weissman, N. J., Medvedofsky, D., Puri, R., Kapadia, S., Sannino, A., Grayburn, P., Kar, S., Lim, S., Lindenfeld, J., Abraham, W. T., Mack, M. J., and Stone, G. W.

Subjects
Male, Heart Failure, Heart Valve Prosthesis Implantation, Cardiac Catheterization, Prognosi, Risk Factor, Hypertension, Pulmonary, Mitral Valve Insufficiency, Middle Aged, Risk Assessment, Severity of Illness Index, mitral valve repair, Treatment Outcome, Postoperative Complications, transcatheter, Echocardiography, pulmonary hypertension, Mitral Valve, Female, mitral regurgitation, Human
Abstract

Background: Pulmonary hypertension worsens prognosis in patients with heart failure (HF) and secondary mitral regurgitation (SMR). Objectives: This study sought to determine whether baseline pulmonary hypertension influences outcomes of transcatheter mitral valve repair (TMVr) in patients with HF with SMR. Methods: In the COAPT (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy for Heart Failure Patients with Functional Mitral Regurgitation) trial, 614 patients with HF with moderate-to-severe or severe SMR were randomized to TMVr with the MitraClip plus guideline-directed medical therapy (GDMT) (n = 302) versus GDMT alone (n = 312). Baseline pulmonary artery systolic pressure (PASP) estimated from echocardiography was categorized as substantially increased (≥50 mm Hg) versus not substantially increased (

Published
2020

4. DEGRO 2004: 10. Jahreskongress der Deutschen Gesellschaft für Radioonkologie

Author

Wendt, Thomas G., Gademann, G., Pambor, C., Grießbach, I., von Specht, H., Martin, T., Baltas, D., Kurek, R., Röddiger, S., Tunn, U. W., Zamboglou, N., Eich, H. T., Staar, S., Gossmann, A., Hansemann, K., Semrau, R., Skripnitchenko, R., Diehl, V., Müller, R.-P., Sehlen, S., Willich, N., Rühl, U., Lukas, P., Dühmke, E., Engel, K., Tabbert, E., Bolck, M., Knaack, S., Annweiler, H., Krempien, R., Hoppe, H., Harms, W., Daeuber, S., Schorr, O., Treiber, M., Debus, J., Alber, M., Paulsen, F., Birkner, M., Bakai, A., Belka, C., Budach, W., Grosser, K.-H., Kramer, R., Kober, B., Reinert, M., Schneider, P., Hertel, A., Feldmann, H., Csere, P., Hoinkis, C., Rothe, G., Zahn, P., Alheit, H., Cavanaugh, S. X., Kupelian, P., Reddy, C., Pollock, B., Fuss, M., Roeddiger, S., Dannenberg, T., Rogge, B., Drechsler, D., Herrmann, T., Alberti, W., Schwarz, R., Graefen, M., Krüll, A., Rudat, V., Huland, H., Fehr, C., Baum, C., Glocker, S., Nüsslin, F., Heil, T., Lemnitzer, H., Knips, M., Baumgart, O., Thiem, W., Kloetzer, K.-H., Hoffmann, L., Neu, B., Hültenschmidt, B., Sautter-Bihl, M.-L., Micke, O., Seegenschmiedt, M. H., Köppen, D., Klautke, G., Fietkau, R., Schultze, J., Schlichting, G., Koltze, H., Kimmig, B., Glatzel, M., Fröhlich, D., Bäsecke, S., Krauß, A., Strauß, D., Buth, K.-J., Böhme, R., Oehler, W., Bottke, D., Keilholz, U., Heufelder, K., Wiegel, T., Hinkelbein, W., Rödel, C., Papadopoulos, T., Munnes, M., Wirtz, R., Sauer, R., Rödel, F., Lubgan, D., Distel, L., Grabenbauer, G. G., Sak, A., Stüben, G., Pöttgen, C., Grehl, S., Stuschke, M., Müller, K., Pfaffendorf, C., Mayerhofer, A., Köhn, F. M., Ring, J., van Beuningen, D., Meineke, V., Neubauer, S., Keller, U., Wittlinger, M., Riesenbeck, D., Greve, B., Exeler, R., Ibrahim, M., Liebscher, C., Severin, E., Ott, O., Pötter, R., Hammer, J., Hildebrandt, G., Beckmann, M. W., Strnad, V., Fehlauer, F., Tribius, S., Bajrovic, A., Höller, U., Rades, D., Warszawski, A., Baumann, R., Madry-Gevecke, B., Karstens, J. H., Grehn, C., Hensley, F., Berns, C., Wannenmacher, M., Semrau, S., Reimer, T., Gerber, B., Ketterer, P., Koepcke, E., Hänsgen, G., Strauß, H. G., Dunst, J., Füller, J., Kalb, S., Wendt, T., Weitmann, H. D., Waldhäusl, C., Knocke, T.-H., Lamprecht, U., Classen, J., Kaulich, T. W., Aydeniz, B., Bamberg, M., Wiezorek, T., Banz, N., Salz, H., Scheithauer, M., Schwedas, M., Lutterbach, J., Bartelt, S., Frommhold, H., Lambert, J., Hornung, D., Swiderski, S., Walke, M., Siefert, A., Pöllinger, B., Krimmel, K., Schaffer, M., Koelbl, O., Bratengeier, K., Vordermark, D., Flentje, M., Hero, B., Berthold, F., Combs, S. E., Gutwein, S., Schulz-Ertner, D., van Kampen, M., Thilmann, C., Kocher, M., Kunze, S., Schild, S., Ikezaki, K., Müller, B., Sieber, R., Weiß, C., Wolf, I., Wenz, F., Weber, K.-J., Schäfer, J., Engling, A., Laufs, S., Veldwijk, M. R., Milanovic, D., Fleckenstein, K., Zeller, W., Fruehauf, S., Herskind, C., Weinmann, M., Jendrossek, V., Rübe, C., Appold, S., Kusche, S., Hölscher, T., Brüchner, K., Geyer, P., Baumann, M., Kumpf, R., Zimmermann, F., Schill, S., Geinitz, H., Nieder, C., Jeremic, B., Molls, M., Liesenfeld, S., Petrat, H., Hesselmann, S., Schäfer, U., Bruns, F., Horst, E., Wilkowski, R., Assmann, G., Nolte, A., Diebold, J., Löhrs, U., Fritz, P., Hans-Jürgen, K., Mühlnickel, W., Bach, P., Wahlers, B., Kraus, H.-J., Wulf, J., Hädinger, U., Baier, K., Krieger, T., Müller, G., Hof, H., Herfarth, K., Brunner, T., Hahn, S. M., Schreiber, F. S., Rustgi, A. K., McKenna, W. G., Bernhard, E. J., Guckenberger, M., Meyer, K., Willner, J., Schmidt, M., Kolb, M., Li, M., Gong, P., Abdollahi, A., Trinh, T., Huber, P. E., Christiansen, H., Saile, B., Neubauer-Saile, K., Tippelt, S., Rave-Fränk, M., Hermann, R. M., Dudas, J., Hess, C. F., Schmidberger, H., Ramadori, G., Andratschke, N., Price, R., Ang, K.-K., Schwarz, S., Kulka, U., Busch, M., Schlenger, L., Bohsung, J., Eichwurzel, I., Matnjani, G., Sandrock, D., Richter, M., Wurm, R., Budach, V., Feussner, A., Gellermann, J., Jordan, A., Scholz, R., Gneveckow, U., Maier-Hauff, K., Ullrich, R., Wust, P., Felix, R., Waldöfner, N., Seebass, M., Ochel, H.-J., Dani, A., Varkonyi, A., Osvath, M., Szasz, A., Messer, P. M., Blumstein, N. M., Gottfried, H.-W., Schneider, E., Reske, S. N., Röttinger, E. M., Grosu, A.-L., Franz, M., Stärk, S., Weber, W., Heintz, M., Indenkämpen, F., Beyer, T., Lübcke, W., Levegrün, S., Hayen, J., Czech, N., Mbarek, B., Köster, R., Thurmann, H., Todorovic, M., Schuchert, A., Meinertz, T., Münzel, T., Grundtke, H., Hornig, B., Hehr, T., Dilcher, C., Chan, R. C., Mintz, G. S., Kotani, J.-I., Shah, V. M., Canos, D. A., Weissman, N. J., Waksman, R., Wolfram, R., Bürger, B., Schrappe, M., Timmermann, B., Lomax, A., Goitein, G., Schuck, A., Mattke, A., Int-Veen, C., Brecht, I., Bernhard, S., Treuner, J., Koscielniak, E., Heinze, F., Kuhlen, M., von Schorlemer, I., Ahrens, S., Hunold, A., Könemann, S., Winkelmann, W., Jürgens, H., Gerstein, J., Polivka, B., Sykora, K.-W., Bremer, M., Thamm, R., Höpfner, C., Gumprecht, H., Jäger, R., Leonardi, M. A., Frank, A. M., Trappe, A. E., Lumenta, C. B., Östreicher, E., Pinsker, K., Müller, A., Fauser, C., Arnold, W., Henzel, M., Groß, M. W., Engenhart-Cabillic, R., Schüller, P., Palkovic, S., Schröder, J., Wassmann, H., Block, A., Bauer, R., Keffel, F.-W., Theophil, B., Wisser, L., Rogger, M., Niewald, M., van Lengen, V., Mathias, K., Welzel, G., Bohrer, M., Steinvorth, S., Schleußner, C., Leppert, K., Röhrig, B., Strauß, B., van Oorschot, B., Köhler, N., Anselm, R., Winzer, A., Schneider, T., Koch, U., Schönekaes, K., Mücke, R., Büntzel, J., Kisters, K., Scholz, C., Keller, M., Winkler, C., Prause, N., Busch, R., Roth, S., Haas, I., Willers, R., Schultze-Mosgau, S., Wiltfang, J., Kessler, P., Neukam, F. W., Röper, B., Nüse, N., Auer, F., Melzner, W., Geiger, M., Lotter, M., Kuhnt, T., Müller, A. C., Jirsak, N., Gernhardt, C., Schaller, H.-G., Al-Nawas, B., Klein, M. O., Ludwig, C., Körholz, J., Grötz, K. A., Huppers, K., Kunkel, M., Olschewski, T., Bajor, K., Lang, B., Lang, E., Kraus-Tiefenbacher, U., Hofheinz, R., von Gerstenberg-Helldorf, B., Willeke, F., Hochhaus, A., Roebel, M., Oertel, S., Riedl, S., Buechler, M., Foitzik, T., Ludwig, K., Klar, E., Meyer, A., Meier zu Eissen, J., Schwab, D., Meyer, T., Höcht, S., Siegmann, A., Sieker, F., Pigorsch, S., Milicic, B., Acimovic, L., Milisavljevic, S., Radosavljevic-Asic, G., Presselt, N., Baum, R. P., Treutler, D., Bonnet, R., Schmücking, M., Sammour, D., Fink, T., Ficker, J., Pradier, O., Lederer, K., Weiss, E., Hille, A., Welz, S., Sepe, S., Friedel, G., Spengler, W., Susanne, E., Kölbl, O., Hoffmann, W., Wörmann, B., Günther, A., Becker-Schiebe, M., Güttler, J., Schul, C., Nitsche, M., Körner, M. K., Oppenkowski, R., Guntrum, F., Malaimare, L., Raub, M., Schöfl, C., Averbeck, T., Hacker, I., Blank, H., Böhme, C., Imhoff, D., Eberlein, K., Weidauer, S., Böttcher, H. D., Edler, L., Tatagiba, M., Molina, H., Ostertag, C., Milker-Zabel, S., Zabel, A., Schlegel, W., Hartmann, A., Wildfang, I., Kleinert, G., Hamm, K., Reuschel, W., Wehrmann, R., Kneschaurek, P., Münter, M. W., Nikoghosyan, A., Didinger, B., Nill, S., Rhein, B., Küstner, D., Schalldach, U., Eßer, D., Göbel, H., Wördehoff, H., Pachmann, S., Hollenhorst, H., Dederer, K., Evers, C., Lamprecht, J., Dastbaz, A., Schick, B., Fleckenstein, J., Plinkert, P. K., Rübe, Chr., Merz, T., Sommer, B., Mencl, A., Ghilescu, V., Astner, S., Martin, A., Momm, F., Volegova-Neher, N. J., Schulte-Mönting, J., Guttenberger, R., Buchali, A., Blank, E., Sidow, D., Huhnt, W., Gorbatov, T., Heinecke, A., Beckmann, G., Bentia, A.-M., Schmitz, H., Spahn, U., Heyl, V., Prott, P.-J., Galalae, R., Schneider, R., Voith, C., Scheda, A., Hermann, B., Bauer, L., Melchert, F., Kröger, N., Grüneisen, A., Jänicke, F., Zander, A., Zuna, I., Schlöcker, I., Wagner, K., John, E., Dörk, T., Lochhas, G., Houf, M., Lorenz, D., Link, K.-H., Prott, F.-J., Thoma, M., Schauer, R., Heinemann, V., Romano, M., Reiner, M., Quanz, A., Oppitz, U., Bahrehmand, R., Tine, M., Naszaly, A., Patonay, P., Mayer, Á., Markert, K., Mai, S.-K., Lohr, F., Dobler, B., Pinkawa, M., Fischedick, K., Treusacher, P., Cengiz, D., Mager, R., Borchers, H., Jakse, G., Eble, M. J., Asadpour, B., Krenkel, B., Holy, R., Kaplan, Y., Block, T., Czempiel, H., Haverkamp, U., Prümer, B., Christian, T., Benkel, P., Weber, C., Gruber, S., Reimann, P., Blumberg, J., Krause, K., Fischedick, A.-R., Kaube, K., Steckler, K., Henzel, B., Licht, N., Loch, T., Krystek, A., Lilienthal, A., Alfia, H., Claßen, J., Spillner, P., Knutzen, B., Souchon, R., Schulz, I., Grüschow, K., Küchenmeister, U., Vogel, H., Wolff, D., Ramm, U., Licner, J., Rudolf, F., Moog, J., Rahl, C. G., Mose, S., Vorwerk, H., Weiß, E., Engert, A., Seufert, I., Schwab, F., Dahlke, J., Zabelina, T., Krüger, W., Kabisch, H., Platz, V., Wolf, J., Pfistner, B., Stieltjes, B., Wilhelm, T., Schmuecking, M., Junker, K., Treutier, D., Schneider, C. P., Leonhardi, J., Niesen, A., Hoeffken, K., Schmidt, A., Mueller, K.-M., Schmid, I., Lehmann, K., Blumstein, C. G., Kreienberg, R., Freudenberg, L., Kühl, H., Stahl, M., Elo, B., Erichsen, P., Stattaus, H., Welzel, T., Mende, U., Heiland, S., Salter, B. J., Schmid, R., Stratakis, D., Huber, R. M., Haferanke, J., Zöller, N., Henke, M., Lorenzen, J., Grzyska, B., Kuhlmey, A., Adam, G., Hamelmann, V., Bölling, T., Job, H., Panke, J. E., Feyer, P., Püttmann, S., Siekmeyer, B., Jung, H., Gagel, B., Militz, U., Piroth, M., Schmachtenberg, A., Hoelscher, T., Verfaillie, C., Kaminski, B., Lücke, E., Mörtel, H., Eyrich, W., Fritsch, M., Georgi, J.-C., Plathow, C., Zieher, H., Kiessling, F., Peschke, P., Kauczor, H.-U., Licher, J., Schneider, O., Henschler, R., Seidel, C., Kolkmeyer, A., Nguyen, T. P., Janke, K., Michaelis, M., Bischof, M., Stoffregen, C., Lipson, K., Weber, K., Ehemann, V., Jürgen, D., Achanta, P., Thompson, K., Martinez, J. L., Körschgen, T., Pakala, R., Pinnow, E., Hellinga, D., O’Tio, F., Katzer, A., Kaffer, A., Kuechler, A., Steinkirchner, S., Dettmar, N., Cordes, N., Frick, S., Kappler, M., Taubert, H., Bartel, F., Schmidt, H., Bache, M., Frühauf, S., Wenk, T., Litzenberger, K., Erren, M., van Valen, F., Liu, L., Yang, K., Palm, J., Püsken, M., Behe, M., Behr, T. M., Marini, P., Johne, A., Claussen, U., Liehr, T., Steil, V., Moustakis, C., Griessbach, I., Oettel, A., Schaal, C., Reinhold, M., Strasssmann, G., Braun, I., Vacha, P., Richter, D., Osterham, T., Wolf, P., Guenther, G., Miemietz, M., Lazaridis, E. A., Forthuber, B., Sure, M., Klein, J., Saleske, H., Riedel, T., Hirnle, P., Horstmann, G., Schoepgens, H., Van Eck, A., Bundschuh, O., Van Oosterhut, A., Xydis, K., Theodorou, K., Kappas, C., Zurheide, J., Fridtjof, N., Ganswindt, U., Weidner, N., Buchgeister, M., Weigel, B., Müller, S. B., Glashörster, M., Weining, C., Hentschel, B., Sauer, O. A., Kleen, W., Beck, J., Lehmann, D., Ley, S., Fink, C., Puderbach, M., Hosch, W., Schmähl, A., Jung, K., Stoßberg, A., Rolf, E., Damrau, M., Oetzel, D., Maurer, U., Maurer, G., Lang, K., Zumbe, J., Hahm, D., Fees, H., Robrandt, B., Melcher, U., Niemeyer, M., Mondry, A., Kanellopoulos-Niemeyer, V., Karle, H., Jacob-Heutmann, D., Born, C., Mohr, W., Kutzner, J., Thelen, M., Schiebe, M., Pinkert, U., Piasswilm, L., Pohl, F., Garbe, S., Wolf, K., Nour, Y., Barwig, P., Trog, D., Schäfer, C., Herbst, M., Dietl, B., Cartes, M., Schroeder, F., Sigingan-Tek, G., Feierabend, R., Theden, S., Schlieck, A., Gotthardt, M., Glowalla, U., Kremp, S., Hamid, O., Riefenstahl, N., Michaelis, B., Schaal, G., Liebermeister, E., Niewöhner-Desbordes, U., Kowalski, M., Franz, N., Stahl, W., Baumbach, C., Thale, J., Wagner, W., Justus, B., Huston, A. L., Seaborn, R., Rai, P., Rha, S.-W., Sakas, G., Wesarg, S., Zogal, P., Schwald, B., Seibert, H., Berndt-Skorka, R., Seifert, G., Schoenekaes, K., Bilecen, C., Ito, W., Matschuck, G., and Isik, D.

Published
2004
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5. Artificial intelligence-guided image acquisition on patients with implanted electrophysiological devices: results from a pivotal prospective multi-center clinical trial

Author

Surette, S, primary, Narang, A, additional, Bae, R, additional, Hong, H, additional, Thomas, Y, additional, Cadieu, C, additional, Chaudhry, A, additional, Martin, R, additional, Rubenson, D, additional, Goldstein, S, additional, Little, S, additional, Lang, R, additional, Weissman, N, additional, and Thomas, J.D, additional

Published
2020
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17. Paravalvular regurgitation after transcatheter aortic valve replacement with the Edwards sapien valve in the PARTNER trial: characterizing patients and impact on outcomes

Author

Kodali, S., primary, Pibarot, P., additional, Douglas, P. S., additional, Williams, M., additional, Xu, K., additional, Thourani, V., additional, Rihal, C. S., additional, Zajarias, A., additional, Doshi, D., additional, Davidson, M., additional, Tuzcu, E. M., additional, Stewart, W., additional, Weissman, N. J., additional, Svensson, L., additional, Greason, K., additional, Maniar, H., additional, Mack, M., additional, Anwaruddin, S., additional, Leon, M. B., additional, and Hahn, R. T., additional

Published
2014
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19. The potential clinical utility of intravascular ultrasound guidance in patients undergoing percutaneous coronary intervention with drug-eluting stents

Author

Roy, P., primary, Steinberg, D. H., additional, Sushinsky, S. J., additional, Okabe, T., additional, Pinto Slottow, T. L., additional, Kaneshige, K., additional, Xue, Z., additional, Satler, L. F., additional, Kent, K. M., additional, Suddath, W. O., additional, Pichard, A. D., additional, Weissman, N. J., additional, Lindsay, J., additional, and Waksman, R., additional

Published
2008
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20. Effect of the polymer-based, paclitaxel-eluting TAXUS Express stent on vascular tissue responses: a volumetric intravascular ultrasound integrated analysis from the TAXUS IV, V, and VI trials

Author

Weissman, N. J., primary, Ellis, S. G., additional, Grube, E., additional, Dawkins, K. D., additional, Greenberg, J. D., additional, Mann, T., additional, Cannon, L. A., additional, Cambier, P. A., additional, Fernandez, S., additional, Mintz, G. S., additional, Mandinov, L., additional, Koglin, J., additional, and Stone, G. W., additional

Published
2007
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22. Stimulus generalization in slow rotation

Author

Gottlieb, N. D and Weissman, N. W

Subjects
Biotechnology
Abstract

Rats ability to discriminate slow rotation speeds, suggesting otolith organs and proprioceptors sensitivity role in discrimination

Published
1969

25. DEGRO 2004

Author

Wendt, Thomas G., primary, Gademann, G., additional, Pambor, C., additional, Grießbach, I., additional, von Specht, H., additional, Martin, T., additional, Baltas, D., additional, Kurek, R., additional, Röddiger, S., additional, Tunn, U. W., additional, Zamboglou, N., additional, Eich, H. T., additional, Staar, S., additional, Gossmann, A., additional, Hansemann, K., additional, Semrau, R., additional, Skripnitchenko, R., additional, Diehl, V., additional, Müller, R.-P., additional, Sehlen, S., additional, Willich, N., additional, Rühl, U., additional, Lukas, P., additional, Dühmke, E., additional, Engel, K., additional, Tabbert, E., additional, Bolck, M., additional, Knaack, S., additional, Annweiler, H., additional, Krempien, R., additional, Hoppe, H., additional, Harms, W., additional, Daeuber, S., additional, Schorr, O., additional, Treiber, M., additional, Debus, J., additional, Alber, M., additional, Paulsen, F., additional, Birkner, M., additional, Bakai, A., additional, Belka, C., additional, Budach, W., additional, Grosser, K.-H., additional, Kramer, R., additional, Kober, B., additional, Reinert, M., additional, Schneider, P., additional, Hertel, A., additional, Feldmann, H., additional, Csere, P., additional, Hoinkis, C., additional, Rothe, G., additional, Zahn, P., additional, Alheit, H., additional, Cavanaugh, S. 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Published
2004
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38. Improving quality improvement using achievable benchmarks for physician feedback: a randomized controlled trial.

Author

Kiefe CI, Allison JJ, Williams OD, Person SD, Weaver MT, Weissman NW, Kiefe, C I, Allison, J J, Williams, O D, Person, S D, Weaver, M T, and Weissman, N W

Abstract

Context: Performance feedback and benchmarking, common tools for health care improvement, are rarely studied in randomized trials. Achievable Benchmarks of Care (ABCs) are standards of excellence attained by top performers in a peer group and are easily and reproducibly calculated from existing performance data.Objective: To evaluate the effectiveness of using achievable benchmarks to enhance typical physician performance feedback and improve care.Design: Group-randomized controlled trial conducted in December 1996, with follow-up through 1998.Setting and Participants: Seventy community physicians and 2978 fee-for-service Medicare patients with diabetes mellitus who were part of the Ambulatory Care Quality Improvement Project in Alabama.Intervention: Physicians were randomly assigned to receive a multimodal improvement intervention, including chart review and physician-specific feedback (comparison group; n = 35) or an identical intervention plus achievable benchmark feedback (experimental group; n = 35).Main Outcome Measure: Preintervention (1994-1995) to postintervention (1997-1998) changes in the proportion of patients receiving influenza vaccination; foot examination; and each of 3 blood tests measuring glucose control, cholesterol level, and triglyceride level, compared between the 2 groups.Results: The proportion of patients who received influenza vaccine improved from 40% to 58% in the experimental group (P<.001) vs from 40% to 46% in the comparison group (P =.02). Odds ratios (ORs) for patients of achievable benchmark physicians vs comparison physicians who received appropriate care after the intervention, adjusted for preintervention care and nesting of patients within physicians, were 1.57 (95% confidence interval [CI], 1.26-1.96) for influenza vaccination, 1.33 (95% CI, 1.05-1.69) for foot examination, and 1.33 (95% CI, 1.04-1.69) for long-term glucose control measurement. For serum cholesterol and triglycerides, the achievable benchmark effect was statistically significant only after additional adjustment for physician characteristics (OR, 1.40 [95% CI, 1.08-1.82] and OR, 1.40 [95% CI, 1.09-1.79], respectively).Conclusion: Use of achievable benchmarks significantly enhances the effectiveness of physician performance feedback in the setting of a multimodal quality improvement intervention. [ABSTRACT FROM AUTHOR]

Published
2001
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39. Natural history of valvular regurgitation 1 year after discontinuation of dexfenfluramine therapy. A randomized, double-blind, placebo-controlled trial.

Author

Weissman NJ, Panza JA, Tighe JF Jr., Gwynne JT, Weissman, N J, Panza, J A, Tighe, J F, and Gwynne, J T

Abstract

Background: Previous studies have reported small increases in the prevalence of low-grade aortic and mitral regurgitation in patients treated with dexfenfluramine compared with placebo. However, whether valvular abnormalities develop or progress 1 year after discontinuation of dexfenfluramine therapy has not been determined.Objective: To assess change in valvular regurgitation and morphologic characteristics 1 year after discontinuation of dexfenfluramine therapy.Design: Randomized, double-blind, placebo-controlled, multicenter study.Setting: Outpatient obesity centers.Patients: Obese persons who had been treated for 2 to 3 months with dexfenfluramine, sustained-release dexfenfluramine, or placebo. Blinding was maintained, and patients returned for repeated echocardiography at 1 year.Measurements: Pairs of echocardiograms were evaluated with a side-by-side reading method for change in grade of valvular regurgitation, structure, and function. A standardized acquisition and reading protocol was followed, and a core laboratory was used.Results: 914 patients who had initial echocardiography returned for repeated echocardiography 11.4 +/- 1.0 months (mean +/- SD) after discontinuing study medication (10.0 +/- 1.0 months after initial echocardiography). Compared with the placebo group, a greater proportion of patients in both dexfenfluramine groups had decreased aortic regurgitation (P = 0.003 for the dexfenfluramine group, P = 0.02 for the sustained-release group). No change in mitral regurgitation or any other measure of valvular structure or function was seen in any treatment group.Conclusions: After dexfenfluramine therapy is taken for 2 to 3 months and discontinued, development or progression of any valvular regurgitation over the following year is unlikely. Echocardiographic evidence suggests that aortic regurgitation regresses in some previously treated patients. [ABSTRACT FROM AUTHOR]

Published
2001
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43. Achievable benchmarks of care: the ABCs of benchmarking.

Author

Weissman, N W, Allison, J J, Kiefe, C I, Farmer, R M, Weaver, M T, Williams, O D, Child, I G, Pemberton, J H, Brown, K C, and Baker, C S

Abstract

Benchmarking is generally considered to be an important tool for quality improvement. Traditional approaches to benchmarking have relied on subjective identification of 'leaders in the field'. We derive an objective, reproducible and attainable Achievable Benchmark of Care (ABC) by measuring and analysing performance on process-of-care indicators. Three characteristics of the ABC that we deem essential are: (1) benchmarks represent a measurable level of excellence; (2) benchmarks are demonstrably attainable; (3) benchmarks are derived from data in an objective, reproducible and predetermined fashion. From these characteristics it follows that (4) providers with high performance are selected to define a level of excellence in a predetermined fashion, but (5) providers with high performance on small numbers of cases do not influence unduly benchmark levels. We use the 'pared mean' to operationalize the ABC. Roughly, the pared mean summarizes the performance of top-ranked providers whereby at least 10% of the patient pool across all providers is included. Bayesian estimators for adjustment of performance of providers with small sample sizes are used to rank providers. Randomized controlled trials to assess the independent effect of the ABC in quality improvement projects are under way. We have developed a methodology objectively and reproducibly to derive a level of excellent, attainable performance, based on measured performance by a group of providers. The ABC can be applied to groups of providers in communities, to institutions and departments within them, or to individual practitioners. [ABSTRACT FROM AUTHOR]

Published
1999
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44. Effects of NADPH oxidase inhibitors on hypoxic vasoconstriction in buffer-perfused rabbit lungs.

Author

Grimminger, F. and Weissman, N.

Subjects
*OXIDASES, *NITRIC oxide, *RABBIT physiology
Abstract

Investigates involvement of NADPH oxidase in hypoxic pulmonary vasoconstriction (HPV) in buffer perfused rabbit lungs, employing diphenyleneiodonium (DPI) and apocynin. Specificity testing; Lung nitric oxide (NO) assessment; DPI and apocynin efficacy quantification.

Published
1995

49. Dietary Production of Congenital Copper Deficiency in Swine

Author

Cancilla, P.A., Barlow, R.M., Weissman, N., Coulson, W.F., and Carnes, W.H.

Abstract

A method for the production of copper deficiency in the adult sow and newborn pig is described. Attempts to produce neonatal deficiency in the pig by the depletion of normal maternal copper reserves through repeated breeding with a copper-deficient ration were unrewarding. It was necessary to raise gilts from birth to maturity in a copper-depleted state before copper deficiency was observed in their off-spring. Brain and liver copper levels as low as 2.3 ± 1.5 and 2.4 ± 0.9 µg/g dry weight, respectively, and serum copper levels of 9 ± 3 µg/100 ml were achieved in the newborn deficient animals. These animals were asymptomatic and lacked gross lesions but manifested a slight reduction in tensile strength of the aorta and a rapid development of anemia in early postnatal life.

Published
1967
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