1
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Donnellan E, Saliba W, Lindsay B, Tchou P. A case of junctional ectopic tachycardia with demonstration of both HA and HV dissociation during tachycardia. HeartRhythm Case Rep 2021; 7:333-337. [PMID: 34026527 PMCID: PMC8134769 DOI: 10.1016/j.hrcr.2021.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Eoin Donnellan
- Section of Electrophysiology and Cardiac Pacing, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio
| | - Walid Saliba
- Section of Electrophysiology and Cardiac Pacing, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio
| | - Bruce Lindsay
- Section of Electrophysiology and Cardiac Pacing, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio
| | - Patrick Tchou
- Section of Electrophysiology and Cardiac Pacing, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio
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2
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Lindsay B, Cook D, Wetzel JM, Siess S, Moses P. Brachycephalic airway syndrome: management of post-operative respiratory complications in 248 dogs. Aust Vet J 2020; 98:173-180. [PMID: 32037517 DOI: 10.1111/avj.12926] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/05/2020] [Accepted: 01/07/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE As ownership of brachycephalic dog breeds rises, the surgical correction of components of brachycephalic airway syndrome (BAS) is increasingly recommended by veterinarians. This study's objective was to describe the incidence of, and strategies for the management of post-operative respiratory complications in brachycephalic dogs undergoing surgical correction of one or more components of BAS. METHODS Medical records of 248 brachycephalic dogs treated surgically for BAS were retrospectively reviewed for demographic information, procedures performed, post-operative complications and treatment implemented, hospitalisation time, and necessity for further surgery. RESULTS Pugs, Cavalier King Charles Spaniels and British Bulldogs were the most commonly encountered breeds. Dogs which experienced a complication were significantly older (mean was 5.5 years, compared with 4.1 years [P < 0.01]). Fifty-eight dogs (23.4%) had complications which included: dyspnoea managed with supplemental oxygen alone (7.3%, n = 18), dyspnoea requiring anaesthesia and re-intubation (8.9%, n = 22), dyspnoea necessitating treatment with a temporary tracheostomy (8.9%, n = 22), aspiration pneumonia (4%, n = 10), and respiratory or cardiac arrest (2.4%, n = 6). Five of the 22 dogs requiring anaesthesia and re-intubation deteriorated 12 or more hours after post-surgical anaesthetic recovery. The overall mortality rate in this study was 2.4% (n = 6). Age, concurrent airway pathology, and emergency presentation significantly predicted post-operative complications. CONCLUSION Our data show the importance of close monitoring for a minimum of 24 h following surgery by an experienced veterinarian or veterinary technician. Surgical intervention for BAS symptomatic dogs should be considered at an earlier age as an elective procedure, to reduce the risk of post-operative complications.
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Affiliation(s)
- B Lindsay
- Department of Neurology, Veterinary Specialist Services, Underwood, Queensland, 4119, Australia
| | - D Cook
- Department of Neurology, Veterinary Specialist Services, Underwood, Queensland, 4119, Australia
| | - J-M Wetzel
- Department of Neurology, Veterinary Specialist Services, Underwood, Queensland, 4119, Australia
| | - S Siess
- Department of Neurology, Veterinary Specialist Services, Underwood, Queensland, 4119, Australia
| | - P Moses
- Department of Neurology, Veterinary Specialist Services, Underwood, Queensland, 4119, Australia
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3
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Donnellan E, Wazni O, Kanj M, Hussein A, Baranowski B, Lindsay B, Aminian A, Jaber W, Schauer P, Saliba W. Outcomes of Atrial Fibrillation Ablation in Morbidly Obese Patients Following Bariatric Surgery Compared With a Nonobese Cohort. Circ Arrhythm Electrophysiol 2019; 12:e007598. [DOI: 10.1161/circep.119.007598] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Morbid obesity is associated with unacceptable high recurrence rates following atrial fibrillation ablation. The role of risk-factor modification including weight loss and improved glycemic control in reducing arrhythmia recurrence following ablation has been highlighted in recent years. In this study, we compared arrhythmia recurrence rates in morbidly obese patients who underwent prior bariatric surgery (BS) with those of nonobese patients following atrial fibrillation ablation in addition to morbidly obese patients who did not undergo BS.
Methods:
This was a single-center observational cohort study. We matched 51 morbidly obese patients [body mass index ≥40 kg/m
2
] who had undergone prior BS in a 2:1 manner with 102 nonobese patients and 102 morbidly obese patients without prior BS on the basis of age, sex, and timing of atrial fibrillation ablation. Our primary outcome of interest was arrhythmia recurrence.
Results:
From the time of BS to ablation, BS was associated with a significant reduction in body mass index (47.6±9.3 to 36.7±7;
P
<0.0001), glycated hemoglobin (6.7±1.5 to 5.8±0.6;
P
<0.0001), and systolic blood pressure (145±13 to 118±11;
P
<0.0001). During a mean follow-up of 29±13 months following ablation, recurrent arrhythmia occurred in 10/51 (20%) patients in the BS group compared with 25/102 (24.5%) patients in the nonobese group and 56 (55%) patients in the non-BS morbidly obese group (
P
<0.0001). No procedural complications were observed in the BS group.
Conclusions:
Bariatric surgery is associated with a reduction in arrhythmia recurrence following atrial fibrillation ablation in morbidly obese patients to those of nonobese patients. Morbidly obese patients should be considered for BS before atrial fibrillation ablation.
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Affiliation(s)
- Eoin Donnellan
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Oussama Wazni
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Mohamed Kanj
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Ayman Hussein
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | | | - Bruce Lindsay
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Ali Aminian
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Wael Jaber
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Philip Schauer
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
| | - Walid Saliba
- Department of Cardiovascular Medicine, Cleveland Clinic, OH
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5
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Chung R, Wazni O, Dresing T, Chung M, Saliba W, Lindsay B, Tchou P. Clinical presentation of ventricular-Hisian and ventricular-nodal accessory pathways. Heart Rhythm 2019; 16:369-377. [DOI: 10.1016/j.hrthm.2018.08.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Indexed: 10/28/2022]
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6
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Hussein AA, Lindsay B, Madden R, Martin D, Saliba WI, Tarakji KG, Saqi B, Rausch DJ, Dresing T, Callahan T, Chung MK, Baranowski B, Bhargava M, Cantillon D, Rickard J, Kanj M, Tchou P, Wilkoff BL, Nissen SE, Wazni OM. New Model of Automated Patient-Reported Outcomes Applied in Atrial Fibrillation. Circ Arrhythm Electrophysiol 2019; 12:e006986. [DOI: 10.1161/circep.118.006986] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ayman A. Hussein
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Bruce Lindsay
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Ruth Madden
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - David Martin
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Walid I. Saliba
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | | | - Bilal Saqi
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - David J. Rausch
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Thomas Dresing
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Thomas Callahan
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Mina K. Chung
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Bryan Baranowski
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Mandeep Bhargava
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Daniel Cantillon
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - John Rickard
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Mohamed Kanj
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Patrick Tchou
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Bruce L. Wilkoff
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Steven E. Nissen
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
| | - Oussama M. Wazni
- Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, OH
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7
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Abdur Rehman K, Wazni OM, Barakat AF, Saliba WI, Shah S, Tarakji KG, Rickard J, Bassiouny M, Baranowski B, Tchou PJ, Bhargava M, Dresing TJ, Callahan TD, Cantillon DJ, Chung M, Kanj M, Irefin S, Lindsay B, Hussein AA. Life-Threatening Complications of Atrial Fibrillation Ablation. JACC Clin Electrophysiol 2019; 5:284-291. [DOI: 10.1016/j.jacep.2018.11.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/19/2018] [Accepted: 11/21/2018] [Indexed: 11/17/2022]
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8
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Wazni O, Nakhla S, Tarakji K, Barakat A, Saliba W, Rickard J, Callahan T, Martin D, Kanj M, Baranowski B, Cantillon D, Niebauer M, Lindsay B, Wilkoff B, Hussein A. P4858The femoral approach as adjunctive strategy during transvenous lead extraction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- O Wazni
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - S Nakhla
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - K Tarakji
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - A Barakat
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - W Saliba
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - J Rickard
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - T Callahan
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - D Martin
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Kanj
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Baranowski
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - D Cantillon
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Niebauer
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Lindsay
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Wilkoff
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - A Hussein
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
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9
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Wazni O, Hutt E, Saliba W, Saqi B, Barakat A, Tarakji K, Kanj M, Lindsay B, Hussein A. P3849Watchman implantation in patients with very high stroke risk. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- O Wazni
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - E Hutt
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - W Saliba
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Saqi
- Cleveland Clinic Foundation, Cleveland, United States of America
| | - A Barakat
- Cleveland Clinic Foundation, Cleveland, United States of America
| | - K Tarakji
- Cleveland Clinic Foundation, Cleveland, United States of America
| | - M Kanj
- Cleveland Clinic Foundation, Cleveland, United States of America
| | - B Lindsay
- Cleveland Clinic Foundation, Cleveland, United States of America
| | - A Hussein
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
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10
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Hussein A, Nimri N, Barakat A, Tarakji K, Saliba W, Rickard J, Callahan T, Martin D, Kanj M, Baranowski B, Cantillon D, Niebauer M, Lindsay B, Wilkoff B, Wazni O. 3408Lead material retention and clinical outcomes in patients undergoing transvenous lead extraction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Hussein
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - N Nimri
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - A Barakat
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - K Tarakji
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - W Saliba
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - J Rickard
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - T Callahan
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - D Martin
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Kanj
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Baranowski
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - D Cantillon
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Niebauer
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Lindsay
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Wilkoff
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - O Wazni
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
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11
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Hussein A, Saqi B, Saliba W, Tarakji K, Rickard J, Callahan T, Dresing T, Bhargava M, Cantillon D, Baranowski B, Kanj M, Chung M, Lindsay B, Wazni O. P1908Catheter ablation of atrial fibrillation in very young adults. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Hussein
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Saqi
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - W Saliba
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - K Tarakji
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - J Rickard
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - T Callahan
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - T Dresing
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Bhargava
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - D Cantillon
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Baranowski
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Kanj
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Chung
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Lindsay
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - O Wazni
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
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12
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Hussein A, Abdur Rehman K, Barakat A, Saliba W, Tarakji K, Rickard J, Bassiouny M, Tchou P, Bhargava M, Callahan T, Cantillon D, Chung M, Kanj M, Lindsay B, Wazni O. P5749Life threatening complications of atrial fibrillation ablation:16-year experience in a large prospective tertiary care cohort. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Hussein
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - K Abdur Rehman
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - A Barakat
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - W Saliba
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - K Tarakji
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - J Rickard
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Bassiouny
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - P Tchou
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Bhargava
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - T Callahan
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - D Cantillon
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Chung
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Kanj
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Lindsay
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - O Wazni
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
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13
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Wazni O, Hutt E, Saliba W, Saqi B, Barakat A, Tarakji K, Kanj M, Lindsay B, Hussein A. P4798Safety of short-term anticoagulation for watchman implantation in patients with prior intracranial hemorrhage. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- O Wazni
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - E Hutt
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - W Saliba
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Saqi
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - A Barakat
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - K Tarakji
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - M Kanj
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - B Lindsay
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
| | - A Hussein
- Cleveland Clinic Foundation, Cardiac Electrophysiology, Cleveland, United States of America
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14
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Wang Q, Lindsay B. Pseudo-kernel method in U-statistic variance estimation with large kernel size. Stat Sin 2018. [DOI: 10.5705/ss.202015.0463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Elshazly MB, Senn T, Wu Y, Lindsay B, Saliba W, Wazni O, Cho L. Impact of Atrial Fibrillation on Exercise Capacity and Mortality in Heart Failure With Preserved Ejection Fraction: Insights From Cardiopulmonary Stress Testing. J Am Heart Assoc 2017; 6:JAHA.117.006662. [PMID: 29089343 PMCID: PMC5721762 DOI: 10.1161/jaha.117.006662] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background Atrial fibrillation (AF) has been objectively associated with exercise intolerance in patients with heart failure with reduced ejection fraction; however, its impact in patients with heart failure with preserved ejection fraction has not been fully scrutinized. Methods and Results We identified 1744 patients with heart failure and ejection fraction ≥50% referred for cardiopulmonary stress testing at the Cleveland Clinic (Cleveland, OH), 239 of whom had AF. We used inverse probability of treatment weighting to balance clinical characteristics between patients with and without AF. A weighted linear regression model, adjusted for unbalanced variables (age, sex, diagnosis, hypertension, and β‐blocker use), was used to compare metabolic stress parameters and 8‐year total mortality (social security index) between both groups. Weighted mean ejection fraction was 58±5.9% in the entire population. After adjusting for unbalanced weighted variables, patients with AF versus those without AF had lower mean peak oxygen consumption (18.5±6.2 versus 20.3±7.1 mL/kg per minute), oxygen pulse (12.4±4.3 versus 12.9±4.7 mL/beat), and circulatory power (2877±1402 versus 3351±1788 mm Hg·mL/kg per minute) (P<0.001 for all comparisons) but similar submaximal exercise capacity (oxygen consumption at anaerobic threshold, 12.0±5.1 versus 12.4±6.0mL/kg per minute; P =0.3). Both groups had similar peak heart rate, whereas mean peak systolic blood pressure was lower in the AF group (150±35 versus 160±51 mm Hg; P<0.001). Moreover, AF was associated with higher total mortality. Conclusions In the largest study of its kind, we demonstrate that AF is associated with peak exercise intolerance, impaired contractile reserve, and increased mortality in patients with heart failure with preserved ejection fraction. Whether AF is the primary offender in these patients or merely a bystander to worse diastolic function requires further investigation.
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Affiliation(s)
- Mohamed B Elshazly
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH.,Division of Cardiology, Department of Medicine, Weill Cornell Medical College-Qatar, Education City, Doha, Qatar
| | - Todd Senn
- Department of Cardiovascular Medicine, Columbia Heart, Columbia, SC
| | - Yuping Wu
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH.,Department of Mathematics, Cleveland State University, Cleveland, OH
| | - Bruce Lindsay
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
| | - Walid Saliba
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
| | - Oussama Wazni
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
| | - Leslie Cho
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
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16
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Chew G, Chow D, Souza S, Arakaki D, Kohorn, Watanabe R, Bandar I, Park EY, Byron M, Corley M, Ndhlovu L, Shikuma C, Lindsay B. 29 Impact of adjunctive metformin therapy on T cell exhaustion and viral persistence in a clinical trial of HIV-infected adults on suppressive ART. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30734-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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17
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Affiliation(s)
- Bruce Lindsay
- Environmental Justice Australia; PO Box 12123, A'Beckett Street Melbourne VIC 8006 Australia
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18
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Wang N, Gosik K, Li R, Lindsay B, Wu R. A block mixture model to map eQTLs for gene clustering and networking. Sci Rep 2016; 6:21193. [PMID: 26892775 PMCID: PMC4759821 DOI: 10.1038/srep21193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 01/19/2016] [Indexed: 01/13/2023] Open
Abstract
To study how genes function in a cellular and physiological process, a general procedure is to classify gene expression profiles into categories based on their similarity and reconstruct a regulatory network for functional elements. However, this procedure has not been implemented with the genetic mechanisms that underlie the organization of gene clusters and networks, despite much effort made to map expression quantitative trait loci (eQTLs) that affect the expression of individual genes. Here we address this issue by developing a computational approach that integrates gene clustering and network reconstruction with genetic mapping into a unifying framework. The approach can not only identify specific eQTLs that control how genes are clustered and organized toward biological functions, but also enable the investigation of the biological mechanisms that individual eQTLs perturb in a signaling pathway. We applied the new approach to characterize the effects of eQTLs on the structure and organization of gene clusters in Caenorhabditis elegans. This study provides the first characterization, to our knowledge, of the effects of genetic variants on the regulatory network of gene expression. The approach developed can also facilitate the genetic dissection of other dynamic processes, including development, physiology and disease progression in any organisms.
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Affiliation(s)
- Ningtao Wang
- Department of Biostatistics, University of Texas School of Public Health, Houston, TX 77030, USA.,Department of Public Health Sciences, The Pennsylvania State University, Hershey, PA 17033, USA
| | - Kirk Gosik
- Department of Statistics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Runze Li
- Department of Biostatistics, University of Texas School of Public Health, Houston, TX 77030, USA.,Department of Statistics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Bruce Lindsay
- Department of Biostatistics, University of Texas School of Public Health, Houston, TX 77030, USA
| | - Rongling Wu
- Department of Biostatistics, University of Texas School of Public Health, Houston, TX 77030, USA.,Department of Statistics, The Pennsylvania State University, University Park, PA 16802, USA
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Abstract
BACKGROUND Researchers have criticised epilepsy care for adults for its lack of impact, stimulating the development of various service models and strategies to respond to perceived inadequacies. OBJECTIVES To assess the effects of any specialised or dedicated intervention beyond that of usual care in adults with epilepsy. SEARCH METHODS For the latest update of this review, we searched the Cochrane Epilepsy Group Specialized Register (9 December 2013), the Cochrane Central Register of Controlled Trials (CENTRAL) (2013, Issue 11), MEDLINE (1946 to June 2013), EMBASE (1988 to June 2013), PsycINFO (1887 to December 2013) and CINAHL (1937 to December 2013). In addition, we contacted experts in the field to seek information on unpublished and ongoing studies, checked the websites of epilepsy organisations and checked the reference lists of included studies. SELECTION CRITERIA We included randomised controlled trials, controlled or matched trials, cohort studies or other prospective studies with a control group, and time series studies. DATA COLLECTION AND ANALYSIS Two review authors independently selected studies, extracted all data, and assessed the quality of all included studies. MAIN RESULTS Our review included 18 different studies of 16 separate interventions, which we classified into seven distinct groups. Most of the studies have methodological weaknesses, and many results from other analyses within studies need to be interpreted with caution because of study limitations. Consequently, there is currently limited evidence for the effectiveness of interventions to improve the health and quality of life in people with epilepsy. It was not possible to combine study results in a meta-analysis because of the heterogeneity of outcomes, study populations, interventions and time scales across the studies. AUTHORS' CONCLUSIONS Two intervention types, the specialist epilepsy nurse and self management education, have some evidence of benefit. However, we did not find clear evidence that other service models substantially improve outcomes for adults with epilepsy. It is also possible that benefits are situation specific and may not apply to other settings. These studies included only a small number of service providers whose individual competence or expertise may have had a significant impact on outcomes. At present it is not possible to advocate any single model of service provision.
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Affiliation(s)
| | - Bruce Lindsay
- University of East AngliaSchool of Nursing and Midwifery, Faculty of HealthEdith Cavell BuildingNorwichNorfolkUKNR7 4TJ
| | - Nigel Fleeman
- University of LiverpoolLiverpool Reviews & Implementation Group2nd Floor, Sherrington BuildingsAshton StreetLiverpoolUKL69 3GE
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Bassiouny M, Saliba W, Hussein A, Rickard J, Diab M, Aman W, Dresing T, Callahan, T, Bhargava M, Martin DO, Shao M, Baranowski B, Tarakji K, Tchou PJ, Hakim A, Kanj M, Lindsay B, Wazni O. Randomized Study of Persistent Atrial Fibrillation Ablation. Circ Arrhythm Electrophysiol 2016; 9:e003596. [DOI: 10.1161/circep.115.003596] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Mohamed Bassiouny
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Walid Saliba
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Ayman Hussein
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - John Rickard
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Mariam Diab
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Wahaj Aman
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Thomas Dresing
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Thomas Callahan,
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Mandeep Bhargava
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - David O. Martin
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Mingyuan Shao
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Bryan Baranowski
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Khaldoun Tarakji
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Patrick J. Tchou
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Ali Hakim
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Mohamed Kanj
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Bruce Lindsay
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
| | - Oussama Wazni
- From the Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH
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Abstract
BACKGROUND Epilepsy care for children has been criticised for its lack of impact. Various service models and strategies have been developed in response to perceived inadequacies in care provision for children and their families. OBJECTIVES To compare the effectiveness of any specialised or dedicated intervention for the care of children with epilepsy and their families to the effectiveness of usual care. SEARCH METHODS We searched the Cochrane Epilepsy Group Specialized Register (9 December 2013), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, 2013,Issue 11), MEDLINE (1946 to June week 2, 2013), EMBASE (1988 to week 25, 2013), PsycINFO (1887 to 11 December 2013) and CINAHL Plus (1937 to 11 December 2013). In addition, we contacted experts in the field to seek information on unpublished and ongoing studies, checked the websites of epilepsy organisations and checked the reference lists of included studies. SELECTION CRITERIA We included randomised controlled trials (RCTs), controlled or matched trials, cohort studies or other prospective studies with a control group (controlled before-and-after studies), or time series studies. DATA COLLECTION AND ANALYSIS Each review author independently selected studies, extracted data and assessed the quality of included studies. MAIN RESULTS We included five interventions reported in seven study reports (of which only four studies of three interventions were designed as RCTs) in this review. They reported on different education and counselling programmes for children, children and parents, teenagers and parents, or children, adolescents and their parents. Each programme showed some benefits for the well-being of children with epilepsy, but each study had methodological flaws (e.g. in one of the studies designed as an RCT, randomisation failed) and no single programme was independently evaluated by more than one study. AUTHORS' CONCLUSIONS While each of the programmes in this review showed some benefit to children with epilepsy, their impacts were extremely variable. No programme showed benefits across the full range of outcomes. No study appeared to have demonstrated any detrimental effects but the evidence in favour of any single programme was insufficient to make it possible to recommend one programme rather than another. More studies, carried out by independent research teams, are needed.
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Affiliation(s)
- Nigel Fleeman
- Liverpool Reviews & Implementation Group, University of Liverpool, 2nd Floor, Sherrington Buildings, Ashton Street, Liverpool, UK, L69 3GE
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22
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Abraham JM, Saliba WI, Vekstein C, Lawrence D, Bhargava M, Bassiouny M, Janiszewski D, Lindsay B, Militello M, Nissen SE, Poe S, Tanaka-Esposito C, Wolski K, Wilkoff BL. Safety of Oral Dofetilide for Rhythm Control of Atrial Fibrillation and Atrial Flutter. Circ Arrhythm Electrophysiol 2015; 8:772-6. [DOI: 10.1161/circep.114.002339] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 05/26/2015] [Indexed: 11/16/2022]
Affiliation(s)
- JoEllyn M. Abraham
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Walid I. Saliba
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Carolyn Vekstein
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - David Lawrence
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Mandeep Bhargava
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Mohamed Bassiouny
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - David Janiszewski
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Bruce Lindsay
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Michael Militello
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Steven E. Nissen
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Stacy Poe
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Christine Tanaka-Esposito
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Kathy Wolski
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
| | - Bruce L. Wilkoff
- From the Minneapolis Heart Institute, MN (J.M.A.); Department of Cardiovascular Medicine, Cleveland Clinic, OH (W.I.S., M. Bhargava, M. Bassiouny, D.J., B.L., M.M., S.E.N., S.P., C.T.-E., K.W., B.L.W.); Brown University, Providence, RI (C.V.); and Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, MD (D.L.)
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Hussein AA, Oberti C, Wazni OM, Hegrenes JA, Sral JA, Lopez J, Kowalewski W, Kattar J, Kanj M, Lindsay B, Saliba W. Radiofrequency Ablation with an Enhanced-Irrigation Flexible-Tip Catheter versus a Standard-Irrigation Rigid-Tip Catheter. Pacing Clin Electrophysiol 2015; 38:1151-8. [PMID: 26096454 DOI: 10.1111/pace.12676] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/03/2015] [Accepted: 06/01/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND The flexible-tip irrigated ablation catheter Cool Flex™ (St. Jude Medical, St. Paul, MN, USA) was introduced to enhance cooling of the catheter-tissue interface and to conform to endocardial surface with better contact. Little is known about the performance of such catheter design compared to the widely used rigid-tip catheters. METHODS In a thigh muscle preparation, ablation using the flexible-tip and rigid-tip catheters was performed in seven pigs across a range of ablation settings and catheter orientation. Postprocedure, the thigh muscle was stained with 2,3,5-triphenyltetrazolium-chloride injected into the femoral artery. The muscle was excised, fixed with formalin, and examined grossly. RESULTS A total of 196 lesions (95 flexible tip, 101 rigid tip) were evaluated. The flexible-tip catheter was associated with enhanced cooling of catheter-tissue interface (31.1 ± 3.3°C vs 36.3 ± 3.7°C, P = 0.0001) in both perpendicular and nonperpendicular catheter orientations. This allowed more energy delivery (37.3 ± 8.9 W vs 33.7 ± 8.1 W, P = 0.004) to targeted tissue and resulted in larger lesions (median 194.7 [interquartile range: 113.1-333.8] mm(3) vs 170.9 [88.7-261.6] mm(3) , P = 0.03) than the rigid-tip catheter with larger maximum diameter (11.1 ± 2.6 mm vs 10.3 ± 2.1 mm, P = 0.03) and larger diameter at tissue surface (10.3 ± 2.4 mm vs 9.6 ± 1.7 mm, P = 0.01). Catheter orientation during ablation affected the efficiency of rigid-tip but not the flexible-tip catheter. The use of the flexible-tip catheter was associated with significantly less char formation on tissue (none vs 5.1% with rigid tip, P = 0.009). CONCLUSION The Cool Flex™ catheter performed better than a rigid-tip catheter with enhanced cooling, larger ablation lesions, and no charring of targeted tissue.
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Affiliation(s)
- Ayman A Hussein
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Carlos Oberti
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Oussama M Wazni
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | | | | | - John Lopez
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - William Kowalewski
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Jacqueline Kattar
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Mohamed Kanj
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Bruce Lindsay
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Walid Saliba
- Cardiac Pacing and Electrophysiology, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
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Koneru S, Popovic Z, Tchou P, Wilkoff B, Lindsay B, Griffin B, Grimm R. ECHO-GUIDED ATRIOVENTRICULAR DELAY OPTIMIZATION IN PATIENTS UNDERGOING CARDIAC RESYNCHRONIZATION THERAPY: SINGLE CENTER EXPERIENCE IN 2196 PATIENTS. J Am Coll Cardiol 2015. [DOI: 10.1016/s0735-1097(15)60912-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Nucleosome is the fundamental packing unit of DNA in eukaryotic cells, and its positioning plays a critical role in regulation of gene expression and chromosome functions. Using a recently developed chemical mapping method, nucleosomes can be potentially mapped with an unprecedented single-base-pair resolution. Existence of overlapping nucleosomes due to cell mixture or cell dynamics, however, causes convolution of nucleosome positioning signals. In this paper, we introduce a locally convoluted cluster model and a maximum likelihood deconvolution approach, and illustrate the effectiveness of this approach in quantification of the nucleosome positional signal in the chemical mapping data.
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Affiliation(s)
- Liqun Xi
- Department of Statistics, Northwestern University, IL 60208, USA
| | - Kristin Brogaard
- Department of Molecular Biosciences, Northwestern University, IL 60208, USA
| | - Qingyang Zhang
- Department of Statistics, Northwestern University, IL 60208, USA
| | - Bruce Lindsay
- Department of Statistics, The Pennsylvania State University, PA, 16802
| | - Jonathan Widom
- Department of Molecular Biosciences, Northwestern University, IL 60208, USA
| | - Ji-Ping Wang
- Department of Statistics, Northwestern University, IL 60208, USA ; Department of Molecular Biosciences, Northwestern University, IL 60208, USA
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Yarmohammadi H, Klosterman T, Grewal G, Alraies MC, Varr BC, Lindsay B, Zurick AO, Shrestha K, Tang WW, Bhargava M, Klein AL. Efficacy of the CHADS₂ scoring system to assess left atrial thrombogenic milieu risk before cardioversion of non-valvular atrial fibrillation. Am J Cardiol 2013; 112:678-83. [PMID: 23726178 DOI: 10.1016/j.amjcard.2013.04.047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 04/19/2013] [Accepted: 04/19/2013] [Indexed: 10/26/2022]
Abstract
The CHADS₂ scoring system was found to be a good predictor for risk stratification of stroke in patients with atrial fibrillation. The effectiveness of this scoring system in assessing thrombogenic milieu before direct-current cardioversion has not yet fully been established on a large scale. In this study, data from 2,369 consecutive patients in whom transesophageal echocardiography was performed for screening before direct-current cardioversion from 1999 to 2008 were analyzed. Left atrial (LA) or LA appendage (LAA) thrombogenic milieu (spontaneous echo contrast, sludge, and thrombus) was investigated. The results were correlated with CHADS₂ score findings. The mean age was 66 ± 13 years, and the ratio of men to women was 2.2:1. CHADS₂ scores of 0, 1, 2, 3, 4, 5 and 6 were present in 11%, 25%, 30%, 22%, 8%, 3%, and 1% of the studies, respectively. The prevalence of LA or LAA sludge or thrombus increased with increasing CHADS₂ scores (2.3%, 7%, 8.5%, 9.9%, 12.3%, and 14.1% for scores of 0, 1, 2, 3, 4, and 5 or 6, respectively, p = 0.01). In a multivariate model, an ejection fraction ≤20% was the best predictor of LA or LAA sludge or thrombus (odds ratio 2.99, p <0.001). In conclusion, transesophageal echocardiographic markers of thrombogenic milieu were highly correlated with increasing CHADS₂ scores in patients who underwent transesophageal echocardiography-guided cardioversion. Giving more value to echocardiographic findings, such as the left ventricular ejection fraction, and its different levels (especially an ejection fraction ≤20%) might improve the precision of the CHADS₂ scoring scheme to predict thrombogenic milieu in the left atrium or LAA as a surrogate to cardioembolic risk in patients with atrial fibrillation.
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Shah AJ, Hocini M, Xhaet O, Pascale P, Roten L, Wilton SB, Linton N, Scherr D, Miyazaki S, Jadidi AS, Liu X, Forclaz A, Nault I, Rivard L, Pedersen MEF, Derval N, Sacher F, Knecht S, Jais P, Dubois R, Eliautou S, Bokan R, Strom M, Ramanathan C, Cakulev I, Sahadevan J, Lindsay B, Waldo AL, Haissaguerre M. Validation of novel 3-dimensional electrocardiographic mapping of atrial tachycardias by invasive mapping and ablation: a multicenter study. J Am Coll Cardiol 2013; 62:889-97. [PMID: 23727090 DOI: 10.1016/j.jacc.2013.03.082] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 02/21/2013] [Accepted: 03/12/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVES This study prospectively evaluated the role of a novel 3-dimensional, noninvasive, beat-by-beat mapping system, Electrocardiographic Mapping (ECM), in facilitating the diagnosis of atrial tachycardias (AT). BACKGROUND Conventional 12-lead electrocardiogram, a widely used noninvasive tool in clinical arrhythmia practice, has diagnostic limitations. METHODS Various AT (de novo and post-atrial fibrillation ablation) were mapped using ECM followed by standard-of-care electrophysiological mapping and ablation in 52 patients. The ECM consisted of recording body surface electrograms from a 252-electrode-vest placed on the torso combined with computed tomography-scan-based biatrial anatomy (CardioInsight Inc., Cleveland, Ohio). We evaluated the feasibility of this system in defining the mechanism of AT-macro-re-entrant (perimitral, cavotricuspid isthmus-dependent, and roof-dependent circuits) versus centrifugal (focal-source) activation-and the location of arrhythmia in centrifugal AT. The accuracy of the noninvasive diagnosis and detection of ablation targets was evaluated vis-à-vis subsequent invasive mapping and successful ablation. RESULTS Comparison between ECM and electrophysiological diagnosis could be accomplished in 48 patients (48 AT) but was not possible in 4 patients where the AT mechanism changed to another AT (n = 1), atrial fibrillation (n = 1), or sinus rhythm (n = 2) during the electrophysiological procedure. ECM correctly diagnosed AT mechanisms in 44 of 48 (92%) AT: macro-re-entry in 23 of 27; and focal-onset with centrifugal activation in 21 of 21. The region of interest for focal AT perfectly matched in 21 of 21 (100%) AT. The 2:1 ventricular conduction and low-amplitude P waves challenged the diagnosis of 4 of 27 macro-re-entrant (perimitral) AT that can be overcome by injecting atrioventricular node blockers and signal averaging, respectively. CONCLUSIONS This prospective multicenter series shows a high success rate of ECM in accurately diagnosing the mechanism of AT and the location of focal arrhythmia. Intraprocedural use of the system and its application to atrial fibrillation mapping is under way.
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Affiliation(s)
- Ashok J Shah
- Department of Rhythmologie, Hôpital Cardiologique du Haut-Lévêque and the Université Bordeaux II, Bordeaux, France.
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Wray J, Lindsay B, Crozier K, Andrews L, Leeson J. Development and implementation of psychological care in a children's hospice. BMJ Support Palliat Care 2012. [DOI: 10.1136/bmjspcare-2012-000196.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rickard J, Lindsay B, Varma N, Chung M, Jackson G, Baranowski B, Tang WH, Wilkoff B. IMPROVEMENT IN EJECTION FRACTION PREDICTS SURVIVAL FOLLOWING CARDIAC RESYNCHRONIZATION THERAPY IN PATIENTS WITH BOTH LEFT BUNDLE AND NON-LEFT BUNDLE BRANCH BLOCK MORPHOLOGIES. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)60871-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lindsay B, Crozier K, Leeson J, Wray J, Andrews L. A model of care in a children's hospice - report on an independent evaluation. BMJ Support Palliat Care 2011. [DOI: 10.1136/bmjspcare-2011-000105.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Crozier K, Lindsay B, Wray J, Leeson J, Andrews L. An independent evaluation of a neonatal end of life care pathway. BMJ Support Palliat Care 2011. [DOI: 10.1136/bmjspcare-2011-000105.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yarmohammadi H, Klosterman T, Grewal G, Depta J, Yousefzai R, Lindsay B, Shrestha K, Tang W, Klein AL. ROLE OF CHA2DS2-VASC SCHEMA IN PREDICTION OF THROMBOEMBOLIC RISK IN PATIENT UNDERGOING TRANSESOPHAGEAL ECHO GUIDED CARDIOVERSION. J Am Coll Cardiol 2011. [DOI: 10.1016/s0735-1097(11)60068-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
BACKGROUND Epilepsy care for children has been criticised for its lack of impact. Various service models and strategies have been developed in response to perceived inadequacies in care provision for children and their families. OBJECTIVES We set out to compare the effectiveness of specialist or dedicated teams or individuals in the care of children with epilepsy with usual care services. SEARCH STRATEGY We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library February issue, 2010), MEDLINE (1950 to March 2010), EMBASE (1988 to May 2006*), PsycINFO (1806 to March 2010) and CINAHL (1982 to March 2010).*Please note that as we currently do not have access to EMBASE, we have been unable to update this aspect of our searching. SELECTION CRITERIA We included randomised controlled trials, controlled or matched trials, cohort studies or other prospective studies with a control group, or time series studies. DATA COLLECTION AND ANALYSIS Each review author independently selected studies, extracted data and assessed the quality of included studies. MAIN RESULTS Four trials and five reports are included in this review. They report on four different education and counselling programmes for children, children and parents, or teenagers and parents. Each programme showed some benefits for the well-being of children with epilepsy, but each trial had methodological flaws and no single programme was evaluated by more than one study. AUTHORS' CONCLUSIONS While each of the programmes in this review showed some benefit to children with epilepsy their impacts were extremely variable. No programme showed benefits across the full range of outcomes. No study appears to have demonstrated any detrimental effects but the evidence in favour of any single programme is insufficient to make it possible to recommend one programme rather than another. More trials, carried out by independent research teams, are needed.
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Affiliation(s)
- Bruce Lindsay
- School of Nursing and Midwifery, Faculty of Health, University of East Anglia, Edith Cavell Building, Norwich, Norfolk, UK, NR7 4TJ
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Pfeil M, Lindsay B. Hypospadias repair: an overview. International Journal of Urological Nursing 2010. [DOI: 10.1111/j.1749-771x.2010.01074.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hussein AA, Martin DO, Saliba W, Patel D, Karim S, Batal O, Banna M, Williams-Andrews M, Sherman M, Kanj M, Bhargava M, Dresing T, Callahan T, Tchou P, Di Biase L, Beheiry S, Lindsay B, Natale A, Wazni O. Radiofrequency ablation of atrial fibrillation under therapeutic international normalized ratio: A safe and efficacious periprocedural anticoagulation strategy. Heart Rhythm 2009; 6:1425-9. [PMID: 19968920 DOI: 10.1016/j.hrthm.2009.07.007] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Accepted: 07/06/2009] [Indexed: 11/27/2022]
Affiliation(s)
- Ayman A Hussein
- Center for Atrial Fibrillation, Cleveland Clinic, Cleveland, OH, USA
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Abstract
Stroke is an extremely common rapid onset medical emergency that can cause permanent neurological damage. Depression is very common in both stroke survivors and their carers, but it is frequently overlooked in both groups. Nurses can make a substantial improvement to patient care by not only being aware of this issue, but also by making an active contribution to the detection of depression in stroke survivors and their carers. The mental health of carers is intertwined with the mental health and disease presentation of the patient. A family centred approach with a dual focus on the stroke survivor and the carer is therefore needed to maximize success in post-stroke care. Nurses can teach families to recognize depression and assist them to accept treatment. They can use the Patient Health Questionnaire 9-item depression scale (PHQ-9) as probably the most suitable screening and diagnostic tool for both groups. Nurses can play a role in destigmatizing the diagnosis and the link between symptoms of depression and treatment. Finally, nurses can play an important part in initiating, monitoring and adjusting treatment.
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Affiliation(s)
- Michael Pfeil
- School of Nursing and Midwifery, Faculty of Health, University of East Anglia, Norwich
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Lindsay B. Pariahs or partners? Welcome and unwelcome visitors in the Jenny Lind Hospital for Sick Children, Norwich, 1900-50. Clio Med 2009; 86:111-129. [PMID: 19842336 DOI: 10.1163/9789042026322_009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The idea of 'visitors' when applied to hospitals may appear simple and uncontroversial: relatives or friends keeping the sick person company, lifting the spirits and offering support. The reality was more complex and challenging, particularly in the care of child patients. The Jenny Lind Hospital for Sick Children constantly evolved its relationship with visitors in the first half of the twentieth century. Two major variables are discussed in this chapter: the changing importance of the visitors themselves and the way in which the Jenny Lind defined and adapted its perspective on visitors and the nature of visiting.
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Affiliation(s)
- Bruce Lindsay
- School of Nursing and Midwifery, University of East Anglia, Norwich
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Abstract
BACKGROUND Epilepsy care has been criticised for its lack of impact. Various service models and strategies have been developed in response to perceived inadequacies in care provision. OBJECTIVES To compare the effectiveness of any specialised or dedicated intervention for the care of adults with epilepsy to the effectiveness of usual care. SEARCH STRATEGY We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue 2, 2006), MEDLINE (1966 to May 2006), EMBASE (1988 to May 2006), PsychINFO (1806 to May 2006) and CINAHL (1982 to May 2006). SELECTION CRITERIA Randomised controlled trials, controlled or matched trials, cohort studies or other prospective studies with a control group, or time series studies. DATA COLLECTION AND ANALYSIS Each review author independently selected studies, extracted data and assessed the quality of included studies. MAIN RESULTS There are 13 trials and 16 reports included in this review. Seven distinct groups of interventions were identified: seven papers reported on five trials of specialist epilepsy nurses. Of the 13 trials, at least three (four reports) have methodological weaknesses, and some of the results from other analyses within studies need to be interpreted with caution because of limiting factors in the studies. Consequently, there is currently limited evidence for the effectiveness of interventions to improve the health and life quality of people with epilepsy. It was not possible to combine study results in a meta-analysis because of the heterogeneity of outcomes, study populations, interventions, and time scales across the studies. AUTHORS' CONCLUSIONS Two intervention types, the specialist epilepsy nurse and self-management education, have some evidence of benefit. However, we did not find clear evidence that other service models substantially improve outcomes for adults with epilepsy. It is also possible that benefits are situation specific and may not generalise to other settings. These studies included only a small number of service providers whose individual competence or expertise may have had a significant impact on outcomes. At present it is not possible to advocate any single model of service provision.
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Affiliation(s)
- P M Bradley
- Thingoe House, Cotton Lane, Bury St Edmonds, UK, IP33 1YJ.
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Bradley PM, Lindsay B. WITHDRAWN: Specialist epilepsy nurses for treating epilepsy. Cochrane Database Syst Rev 2008; 2008:CD001907. [PMID: 18253997 PMCID: PMC10759271 DOI: 10.1002/14651858.cd001907.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Epilepsy is a common serious neurological condition with a 0.5% prevalence. As a result of the perceived deficiencies and suggestions to improve the quality of care offered to people with epilepsy, two models of service provision have been suggested by researchers: specialist epilepsy out-patient clinics (as opposed to the management of patients in general neurology clinics or general medical clinics) and nurse-based liaison services between primary (GP) and secondary/tertiary (hospital-based) care. OBJECTIVES To overview the evidence from controlled trials investigating the effectiveness of specialist epilepsy nurses compared to routine care. SEARCH STRATEGY We searched the Cochrane Central Register of Controlled Trials (TheCochraneLibrary Issue 4, 2004), MEDLINE (October 2004), GEARS, EMBASE, ECRI, Effectiveness Healthcare Bulletin, Effectiveness Matters, Bandolier, Evidence Based Purchasing, National Research Register and PsycINFO databases. SELECTION CRITERIA Randomized controlled and quasi-randomized trials which considered specialist epilepsy nurse interventions with standard or alternative care were included in this review. DATA COLLECTION AND ANALYSIS Two reviewers independently selected trials for inclusion and extracted data. Outcomes investigated included: seizure frequency; appropriateness of medication prescribed; social or psychological functioning scores; knowledge about epilepsy scores; costs of care and adverse effects. MAIN RESULTS Three trials were included, two based in general practice and one in a neurology centre. The population of patients differed between trials, for example one study excluded patients with learning disabilities, and one only recruited patients with a new diagnosis. In view of this heterogeneity we decided not to pool results in a meta-analysis. As yet, there is no convincing evidence that specialist epilepsy nurses improve outcomes for people with epilepsy overall. Important outcomes (eg seizure frequency, psychosocial functioning, knowledge of epilepsy, general health status, work days lost, depression and anxiety scores) show no significant improvement. There is some evidence that people who have not had an epileptic seizure in the last six months are less at risk for depression. There is also evidence that newly diagnosed patients whose knowledge about epilepsy is poor may improve their epilepsy knowledge scores after nurse intervention. AUTHORS' CONCLUSIONS It is clearly plausible that specialist epilepsy nurses could improve quality in epilepsy care. However, there is as yet little evidence to support this assumption as the present research base is small. Further research is needed to investigate the effectiveness of specialist epilepsy nurses before such recommendations can be made.
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Affiliation(s)
- Peter M Bradley
- Thingoe HouseSuffolk West PCTCotton LaneBury St EdmondsUKIP33 1YJ
| | - Bruce Lindsay
- University of East AngliaSchool of Nursing and Midwifery, Faculty of HealthEdith Cavell BuildingNorwichNorfolkUKNR7 4TJ
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Abstract
BACKGROUND Epilepsy is the most common serious neurological condition after stroke, with a 0.5% prevalence, and a two to three per cent life time risk of being given a diagnosis of epilepsy in the developed world.As a result of perceived deficiencies of the quality of care offered to people with epilepsy, two models of service provision have been suggested by researchers: specialist epilepsy out-patient clinics (as opposed to the management of people in general neurology clinics or general medical clinics) and nurse-based liaison services between primary (GP) and secondary/tertiary (hospital-based) care. OBJECTIVES The aim of this review was to assess the evidence from controlled trials investigating the effectiveness of specialist epilepsy clinics compared to routine care. A second similar review investigating the effectiveness of specialist epilepsy nurses has also been published. SEARCH STRATEGY We searched the Cochrane Central Register of Controlled Trials (The Cochrane Library Issue 4, 2004), MEDLINE (January 1966 to August 2004), EMBASE (1988 to August 2004), PsycINFO (1996 to August 2004) and CINAHL (1982 to August 2004). SELECTION CRITERIA All randomized controlled and quasi-randomized trials that considered specialist epilepsy clinic interventions with standard or alternative care were included in this review. DATA COLLECTION AND ANALYSIS No controlled trials of suitable quality were identified for inclusion in the review. MAIN RESULTS No controlled trials of suitable quality were identified for inclusion in the review. AUTHORS' CONCLUSIONS It is not known whether specialist epilepsy clinics improve outcomes for people with epilepsy. As yet, there is no high quality evidence which describes their effectiveness in improving care for people with epilepsy.
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Affiliation(s)
- Peter M Bradley
- Thingoe HouseSuffolk West PCTCotton LaneBury St EdmondsUKIP33 1YJ
| | - Bruce Lindsay
- University of East AngliaSchool of Nursing and Midwifery, Faculty of HealthEdith Cavell BuildingNorwichNorfolkUKNR7 4TJ
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Hooper J, Wigram T, Carson D, Lindsay B. A Review of the Music and Intellectual Disability Literature (1943-2006) Part Two--Experimental Writing. ACTA ACUST UNITED AC 2008. [DOI: 10.1093/mtp/26.2.80] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Estes NM, Page R, Boyden P, Cappato R, Chiu-Man C, Day J, DiMarco J, Ferrick A, Hamdan M, Hamilton R, Hohnloser S, Jung W, Kanter R, Knight B, Lindsay B, Natale A, Reynolds D, Rosenbaum D, Saxon L, Shen WK, Trayanova N, Wilkoff B. Heart Rhythm Society Scientific Program Committee. Heart Rhythm 2007. [DOI: 10.1016/j.hrthm.2007.08.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lindsay B, Bradley PM. Care delivery and self-management strategies for children with epilepsy. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2006. [DOI: 10.1002/14651858.cd006245] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Greenberg S, Blume W, Faddis M, Finney J, Hall A, Talcott M, Lindsay B. Remote controlled magnetically guided pulmonary vein isolation in canines. Heart Rhythm 2006; 3:71-6. [PMID: 16399057 DOI: 10.1016/j.hrthm.2005.09.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Accepted: 09/17/2005] [Indexed: 11/26/2022]
Abstract
BACKGROUND Ablation of atrial fibrillation (AF) remains a challenging procedure fraught with significant risks and technical difficulties. A magnetically guided catheter system has been developed that potentially addresses many of these challenges. Fully remote controlled electrical isolation of pulmonary veins was performed in canines, facilitated by a three-dimensional computed tomogram (CT) that depicted the anatomic relationships of the pulmonary veins and the left atrium. OBJECTIVE The purpose of this study was to evaluate the feasibility of pulmonary vein isolation with a novel remote controlled magnetically guided catheter. METHODS CT scans were obtained in seven healthy male canines. A 7-Fr irrigated magnetic catheter was advanced transseptally to the left atrium. A magnetic guidance system was used to control the orientation of the catheter tip. A mechanical device advanced or retracted the catheter as needed. Pulmonary venography was performed and compared with the CT scan. The CT scan was used as a visual reference to set the magnetic field vectors. Radiofrequency energy was delivered through the irrigated magnetic catheter to isolate the superior pulmonary veins, as judged by elimination of pulmonary vein potentials. RESULTS The isolation procedure was successful in all 14 pulmonary veins, and there was no evidence of stenosis at 80-100 days postprocedure. CONCLUSIONS These results demonstrate that remote controlled catheter ablation is safe and effective for segmental pulmonary vein isolation. This technology could facilitate curative ablation of AF in humans and reduce the occupational hazards to the operator of prolonged procedures and radiation exposure.
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Affiliation(s)
- Scott Greenberg
- Washington University School of Medicine, St. Louis, Missouri, USA
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Lindsay B. Health Policy for Health Care Professionals Bradshaw Peter L Bradshaw Gwendolen Health Policy for Health Care Professionals 158pp Sage Publications 9780761974017 0761974016. Nurs Stand 2005; 19:37. [PMID: 27316605 DOI: 10.7748/ns2005.04.19.33.37.b52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A brief 136 pages, plus glossary, references and index - with a misleading title - this book focuses on the NHS rather than general health policy, and virtually ignores major policy issues.
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