Timothy Ryan

ORCID: 0000-0001-9783-6645
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About
Contact & Profiles
Research Areas
  • Mechanical Circulatory Support Devices
  • Cardiac Structural Anomalies and Repair
  • Cardiac Arrest and Resuscitation
  • Transplantation: Methods and Outcomes
  • Inorganic Chemistry and Materials
  • Heart Failure Treatment and Management
  • Membrane-based Ion Separation Techniques
  • Catalysis and Oxidation Reactions
  • Organometallic Complex Synthesis and Catalysis
  • Nanocluster Synthesis and Applications
  • Molecular Junctions and Nanostructures
  • Lymphoma Diagnosis and Treatment
  • Magnetism in coordination complexes
  • Asymmetric Hydrogenation and Catalysis
  • Chemical Synthesis and Analysis
  • Respiratory Support and Mechanisms
  • Aortic Disease and Treatment Approaches
  • Cardiac Valve Diseases and Treatments
  • Geriatric Care and Nursing Homes
  • Organophosphorus compounds synthesis
  • Synthesis and Properties of Aromatic Compounds
  • Catalysis for Biomass Conversion
  • Chronic Lymphocytic Leukemia Research
  • Cardiac and Coronary Surgery Techniques
  • Cardiovascular Syncope and Autonomic Disorders

University of Nebraska Medical Center
2011-2024

Nebraska Medical Center
2013-2021

Inova Fairfax Hospital
2012

University of Colorado Denver
2012

University of Colorado Hospital
2012

Presbyterian Hospital
2012

St. Luke's Hospital
2012

UPMC Presbyterian
2012

University of Maryland, Baltimore
2005

Mayo Clinic
2005

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of activated quadruply bonded molybdenum dimers. Formation new rectangular clusters containing the tetrametal analog cyclobutadiyneRoger N. McGinnis, Timothy R. Ryan, and E. McCarleyCite this: J. Am. Chem. Soc. 1978, 100, 25, 7900–7902Publication Date (Print):December 1, 1978Publication History Published online1 May 2002Published inissue 1 December...

10.1021/ja00493a019 article EN Journal of the American Chemical Society 1978-12-01

Clinical success of donation after circulatory death (DCD) heart transplantation is leading to growing adoption this technique. In comparison procurement from a brain-dead donor, DCD requires additional resources. The economic impact the hospital perspective not well known.

10.1111/ctr.15296 article EN cc-by-nc Clinical Transplantation 2024-03-28

Ventricular assist devices (VADs) are a surgical treatment for heart failure. These may be implanted as bridge to transplant or destination therapy. After recovery and education regarding device care, patients discharged home. Meticulous care of the driveline must taken prevent infection trauma site throughout perioperative event duration support. Currently standardized protocol exit does not exist. VAD coordinators from across country discussed variability in at different centers United...

10.7182/pit2012612 article EN Progress in Transplantation 2012-12-01

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of rectangular tetranuclear cluster complexes molybdenum(II) by condensation quadruply bonded dimersTimothy R. Ryan Robert E. McCarleyCite this: Inorg. Chem. 1982, 21, 5, 2072–2079Publication Date (Print):May 1, 1982Publication History Published online1 May 2002Published inissue 1 1982https://pubs.acs.org/doi/10.1021/ic00135a069https://doi.org/10.1021/ic00135a069research-articleACS PublicationsRequest reuse...

10.1021/ic00135a069 article EN Inorganic Chemistry 1982-05-01

The effect of body habitus for patients who require extracorporeal membrane oxygenation (ECMO) support has not been well-studied and may provide insight into patient survival outcomes. We sought to determine if there is a correlation mass index (BMI) with ECMO outcomes.A retrospective chart review was performed required any form at our institution between 2012 2016. Time variables (overall hospital length stay, intensive care, ventilator days), outcomes (ability wean from ECMO, extubation...

10.1111/jocs.14579 article EN Journal of Cardiac Surgery 2020-04-27

We describe two patients who developed gastrointestinal bleeding due to cytomegalovirus (CMV) colitis after placement of a HeartMate II left ventricular assist device (LVAD). aim raise awareness CMV as possible cause LVAD and discuss potential mechanisms for reactivation areas future research.

10.1016/j.ijid.2012.11.029 article EN publisher-specific-oa International Journal of Infectious Diseases 2013-01-10

Abstract Although temporary mechanical circulatory support (tMCS) for hemodynamic failure following heart transplantation is associated with increased early morbidity and mortality, the impact of etiology graft dysfunction long‐term clinical implications are less well known. The objective our study was to evaluate outcomes in patients who required venoarterial extracorporeal membrane oxygenation (VA ECMO) or right ventricular assist device (RVAD) either primary secondary dysfunction....

10.1111/ctr.14060 article EN Clinical Transplantation 2020-08-09

Background As the number of patients requiring extracorporeal membrane oxygenation (ECMO) increases nationwide, many may require ECMO more than once. We review our experience and outcomes in repeat support. Methods The Nebraska Research Database was utilized for data analysis, (REPs) were compared to overall population. Results Of 246 patients, 2.4% (6/246) REPs. There no statistical difference between median days initial support run (P = 0.670) second 0.813) REPs when comparing non-REP...

10.1111/jocs.13776 article EN Journal of Cardiac Surgery 2018-07-22

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProducts from electron capture reactionsCorazon R. Hastings, Timothy Ryan, and Walter A. AueCite this: Anal. Chem. 1975, 47, 7, 1169–1173Publication Date (Print):June 1, 1975Publication History Published online1 May 2002Published inissue 1 June 1975https://doi.org/10.1021/ac60357a034RIGHTS & PERMISSIONSArticle Views24Altmetric-Citations8LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since...

10.1021/ac60357a034 article EN Analytical Chemistry 1975-06-01

6526 Background: In the E1496 trial, maintenance rituximab significantly prolonged progression free survival (PFS) after CVP (cyclophosphamide, vincristine, prednisone) chemotherapy in patients (pts) with advanced indolent non-Hodgkin’s lymphoma (Proc ASCO 2004:6502). A new follicular international prognostic index (FLIPI) for overall (OS) has been recently reported (Blood 2004, 105:1258) pts treated conventional therapy but its significance other endpoints and setting of chemo-immunotherapy...

10.1200/jco.2005.23.16_suppl.6526 article EN Journal of Clinical Oncology 2005-06-01

Neurally mediated syncope is a complex syndrome that often difficult to manage using currently available treatment strategies. The efficacy and safety of clonazepam was evaluated in 35 patients with refractory neurally syncope. All had (n=33) or disabling presyncope (n=2) positive head‐up tilt table test (HUTT) despite one more the following therapies: β‐blocker, high‐salt diet, fludrocortisone, elastic compression stockings, disopyramide. Clonazepam initiated at 0.5 mg/day titrated 0.25–0.5...

10.1111/j.1540-8159.1999.tb00443.x article EN Pacing and Clinical Electrophysiology 1999-02-01

Background Postcardiotomy extracorporeal membrane oxygenation (PC-ECMO) represents a unique subset of critically ill patients, with paucity data regarding long-term survival and correlated characteristics. We present retrospective cohort PC-ECMO outcomes at 1 3 years. Methods Data were collected retrospectively for all patients requiring ECMO within 72 hours an index cardiac operation (excluding assist devices transplants). Primary the ability to wean from ECMO, hospital survival, survival....

10.1111/jocs.14715 article EN Journal of Cardiac Surgery 2020-07-27

Several patient-related characteristics have been associated with inferior outcomes following durable left ventricular assist device (LVAD) implantation in patients transitioned from venoarterial extracorporeal membrane oxygenation (VA ECMO). The impact of LVAD pump type used is less well-known.We compared between patents who received axial and centrifugal flow LVADs stabilization VA ECMO.From January 2011 to December 2018, we implanted 28 ECMO. This included 17 devices (HeartMate II LVAD,...

10.1111/jocs.14232 article EN Journal of Cardiac Surgery 2019-09-03

Specific guidelines for cardiac rehabilitation and physical activity (PA) in left ventricular assist device (LVAD) recipients are lacking. The European Society of Cardiology (ESC) published a position statement on early mobilization (defined as 7–10 days postimplant) exercise training patients with LVAD that provides basic advice PA exercise.1 cites several studies support the safety postimplant PA; however, cautions measures be taken to reduce risk including: incorporation warm-up cool down...

10.1097/mat.0000000000001343 article EN ASAIO Journal 2021-02-01
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