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Roger Royster

Concepts (283)

Concepts are derived automatically from a person's publications.
Concepts are listed by decreasing relevance which is based on many factors, including how many publications the person wrote about that topic, how long ago those publications were written, and how many publications other people have written on that same topic.


Name Number of Publications Most Recent Publication Publications by All Authors Concept Score Why?
Catheter Ablation
2
2023
67
1.550
Why?
Coronary Artery Bypass
14
2017
101
1.270
Why?
Thoracoscopy
2
2018
9
1.180
Why?
Atrial Fibrillation
4
2020
320
1.070
Why?
Propofol
2
2022
19
0.940
Why?
Cardiac Tamponade
1
2023
8
0.920
Why?
Atrial Flutter
1
2023
14
0.920
Why?
Hemodynamics
15
2023
155
0.880
Why?
Methohexital
1
2022
4
0.850
Why?
Vasoconstriction
1
2022
43
0.850
Why?
Humans
56
2023
31974
0.760
Why?
Intubation, Intratracheal
3
2017
71
0.740
Why?
Goals
1
2020
36
0.710
Why?
Bronchoscopy
2
2017
47
0.660
Why?
Aorta, Thoracic
1
2019
85
0.640
Why?
Prospective Studies
12
2023
2278
0.640
Why?
Cardiology
1
2019
99
0.620
Why?
Bronchi
1
2017
33
0.570
Why?
Stents
2
2008
177
0.570
Why?
Postoperative Complications
6
2017
776
0.540
Why?
Cardiotonic Agents
9
2006
48
0.510
Why?
Collateral Circulation
1
2015
9
0.510
Why?
Coronary Thrombosis
3
2009
14
0.500
Why?
Coronary Circulation
1
2015
43
0.490
Why?
Heart Failure
2
2020
634
0.480
Why?
Cardiac Surgical Procedures
5
2011
73
0.470
Why?
Blood Loss, Surgical
2
2011
49
0.460
Why?
Myocardial Ischemia
5
2002
107
0.410
Why?
Coronary Vessels
2
2015
165
0.400
Why?
Pulmonary Atelectasis
1
2011
2
0.390
Why?
Epinephrine
7
1998
40
0.390
Why?
Respiratory Mechanics
1
2011
6
0.390
Why?
Antifibrinolytic Agents
1
2011
16
0.390
Why?
Mediastinal Neoplasms
1
2011
13
0.390
Why?
Coronary Artery Disease
1
2015
400
0.380
Why?
Cardiopulmonary Bypass
10
2007
56
0.380
Why?
Intraoperative Complications
2
2011
56
0.380
Why?
Amrinone
5
1998
5
0.350
Why?
Male
35
2023
19143
0.350
Why?
Randomized Controlled Trials as Topic
1
2011
510
0.320
Why?
Anesthesia
4
2011
64
0.320
Why?
Adrenergic beta-Antagonists
4
1999
61
0.320
Why?
Oxygen
4
2020
142
0.310
Why?
Middle Aged
28
2017
11804
0.310
Why?
Risk Factors
5
2020
3867
0.310
Why?
Perioperative Care
1
2008
59
0.300
Why?
Heart Rate
11
2007
331
0.300
Why?
Surgical Procedures, Operative
1
2008
82
0.290
Why?
Dobutamine
5
1998
69
0.290
Why?
Catheterization, Central Venous
1
2007
62
0.280
Why?
Electric Countershock
2
2022
11
0.280
Why?
Aged, 80 and over
6
2023
3988
0.270
Why?
Female
31
2017
19939
0.240
Why?
Dopamine
3
2006
232
0.230
Why?
Positive-Pressure Respiration
1
2023
9
0.230
Why?
Postural Balance
1
2016
181
0.230
Why?
Pesticides
1
2016
199
0.220
Why?
Pulmonary Circulation
1
2022
4
0.220
Why?
Occupational Exposure
1
2016
232
0.220
Why?
Transients and Migrants
1
2016
290
0.210
Why?
Emigrants and Immigrants
1
2016
244
0.210
Why?
Catheterization, Swan-Ganz
1
2002
4
0.210
Why?
Fentanyl
5
1991
32
0.210
Why?
Postoperative Care
2
2007
76
0.200
Why?
Propanolamines
2
1999
11
0.190
Why?
Postoperative Period
3
2017
96
0.190
Why?
Lung
1
2022
249
0.190
Why?
Electrocardiography, Ambulatory
2
1997
21
0.190
Why?
Aged
17
2017
10294
0.180
Why?
Nitroglycerin
1
2000
11
0.180
Why?
Vasodilator Agents
1
2000
62
0.180
Why?
Cardiac Pacing, Artificial
3
2007
9
0.180
Why?
Consensus
1
2019
85
0.170
Why?
Hispanic Americans
1
2016
940
0.170
Why?
Anesthetics
2
1989
18
0.170
Why?
Aorta
1
2019
126
0.160
Why?
Coronary Restenosis
2
2008
13
0.160
Why?
Isoproterenol
2
1997
16
0.160
Why?
Double-Blind Method
8
2000
525
0.160
Why?
Thoracic Surgery, Video-Assisted
1
2018
12
0.150
Why?
Ischemia
1
2018
98
0.150
Why?
Calcium
4
1992
307
0.150
Why?
Cardiac Output, Low
2
1994
10
0.150
Why?
Tachycardia
1
1997
4
0.150
Why?
Premedication
1
1997
13
0.150
Why?
Electroconvulsive Therapy
1
1997
28
0.150
Why?
Adrenergic beta-Agonists
1
1997
30
0.150
Why?
Heart
4
1995
177
0.150
Why?
Pharyngitis
1
2017
10
0.140
Why?
Cardiac Output
5
1995
36
0.140
Why?
Preanesthetic Medication
2
2002
3
0.140
Why?
Mental Recall
1
1996
51
0.140
Why?
Random Allocation
1
2017
226
0.140
Why?
Cohort Studies
1
2020
1813
0.130
Why?
Incidence
1
2019
1196
0.130
Why?
Adult
10
2017
9339
0.130
Why?
Anesthesiology
1
1996
49
0.130
Why?
Pain, Postoperative
1
2018
178
0.130
Why?
Bronchial Diseases
1
1995
4
0.130
Why?
Hemoptysis
1
1995
3
0.130
Why?
Hodgkin Disease
2
2011
9
0.130
Why?
Physician-Patient Relations
1
1996
185
0.120
Why?
Patient Satisfaction
1
1996
240
0.120
Why?
Dopamine Agents
1
1994
19
0.120
Why?
Anesthesia, Inhalation
2
2011
16
0.120
Why?
Anesthesia, Intravenous
3
1989
6
0.110
Why?
Myocardial Infarction
5
2000
475
0.100
Why?
Critical Illness
1
1993
87
0.100
Why?
Magnesium Sulfate
2
1991
14
0.100
Why?
Hypertension
2
1997
959
0.100
Why?
Calcium Chloride
1
1992
2
0.100
Why?
Treatment Outcome
1
2020
3302
0.100
Why?
Dexmedetomidine
1
2011
8
0.100
Why?
Coronary Vasospasm
1
1991
4
0.100
Why?
Splanchnic Circulation
1
2011
3
0.100
Why?
Bradycardia
1
2011
16
0.100
Why?
Hypnotics and Sedatives
1
2011
28
0.100
Why?
Respiration, Artificial
1
2011
98
0.090
Why?
Kidney
1
1994
518
0.090
Why?
Prosthesis Failure
1
2010
45
0.090
Why?
Mitral Valve Insufficiency
1
2010
25
0.090
Why?
Biopsy
1
2011
259
0.090
Why?
Dose-Response Relationship, Drug
6
1998
632
0.090
Why?
Arrhythmias, Cardiac
3
2002
88
0.090
Why?
Heart Valve Prosthesis
1
2010
55
0.090
Why?
Etomidate
1
1989
5
0.090
Why?
Drug Interactions
4
1997
78
0.090
Why?
Pentobarbital
2
1988
4
0.080
Why?
Heart Atria
1
2009
65
0.080
Why?
Ticlopidine
1
2008
17
0.080
Why?
Drug-Eluting Stents
1
2008
13
0.080
Why?
Echocardiography
1
2009
159
0.080
Why?
Anesthesia, Conduction
1
2008
25
0.080
Why?
Monitoring, Intraoperative
2
2006
42
0.080
Why?
Aspirin
1
2008
64
0.080
Why?
Neuromuscular Depolarizing Agents
1
1988
5
0.080
Why?
Platelet Aggregation Inhibitors
1
2008
83
0.080
Why?
Case-Control Studies
2
2016
893
0.080
Why?
Medical Errors
1
2007
36
0.070
Why?
Cyclic AMP
2
1998
46
0.070
Why?
Intraoperative Care
1
2006
48
0.070
Why?
Recovery of Function
1
2006
199
0.060
Why?
Blood Pressure
6
2006
845
0.060
Why?
Ventricular Dysfunction, Left
1
2006
170
0.060
Why?
Myocardial Contraction
5
1998
63
0.060
Why?
Young Adult
1
2011
2635
0.060
Why?
Infusions, Intra-Arterial
1
2002
6
0.050
Why?
Coronary Disease
2
1997
210
0.050
Why?
Anesthesia, General
2
2006
28
0.050
Why?
Sex Factors
2
1996
661
0.050
Why?
Age Factors
3
1996
1187
0.050
Why?
North Carolina
1
2016
1514
0.050
Why?
Hypoxia-Ischemia, Brain
1
1999
3
0.040
Why?
Time Factors
5
2011
2147
0.040
Why?
Sufentanil
2
1989
5
0.040
Why?
Aorta, Abdominal
1
1999
29
0.040
Why?
Length of Stay
2
1999
314
0.040
Why?
Antioxidants
1
1999
115
0.040
Why?
Animals
7
1997
7541
0.040
Why?
Heparin
2
1990
74
0.040
Why?
Adrenergic Agonists
1
1998
5
0.040
Why?
Heart Valves
1
1998
16
0.040
Why?
Lymphocytes
1
1998
57
0.040
Why?
Heart Conduction System
2
1988
72
0.040
Why?
Myocardium
2
1997
186
0.040
Why?
Renal Circulation
1
1997
13
0.040
Why?
Sympathetic Nervous System
1
1997
31
0.040
Why?
Electrocardiography
3
1999
599
0.040
Why?
Nausea
1
1997
53
0.040
Why?
Chromonar
1
1997
1
0.040
Why?
Coumarins
1
1997
1
0.040
Why?
Myocardial Reperfusion
1
1997
10
0.040
Why?
Myocardial Reperfusion Injury
1
1997
17
0.040
Why?
Hospital-Patient Relations
1
1996
3
0.040
Why?
Intraoperative Period
2
1999
42
0.030
Why?
Injections, Intravenous
2
1999
78
0.030
Why?
Telephone
1
1996
59
0.030
Why?
Stimulation, Chemical
2
1995
13
0.030
Why?
Anticoagulants
1
1997
123
0.030
Why?
Pyridones
1
1995
10
0.030
Why?
General Surgery
1
1996
88
0.030
Why?
Triiodothyronine
1
1995
7
0.030
Why?
Receptors, Adrenergic, beta
1
1995
10
0.030
Why?
Attitude to Health
1
1996
165
0.030
Why?
Diuresis
1
1994
6
0.030
Why?
Natriuresis
1
1994
4
0.030
Why?
Statistics as Topic
1
1994
108
0.030
Why?
Logistic Models
1
1996
778
0.030
Why?
Splenectomy
1
1974
21
0.030
Why?
Health Status
1
1996
399
0.030
Why?
Dogs
3
1988
120
0.030
Why?
Retrospective Studies
2
2011
3502
0.030
Why?
Ventricular Function, Left
3
2006
245
0.030
Why?
Ephedrine
1
1992
3
0.030
Why?
Shock
1
1993
30
0.030
Why?
Drug Therapy, Combination
1
1993
288
0.030
Why?
Drug Combinations
2
1989
98
0.030
Why?
Pulmonary Artery
2
1992
24
0.020
Why?
Infusions, Intravenous
1
1992
100
0.020
Why?
Hypocalcemia
1
1991
13
0.020
Why?
Nitroprusside
1
1991
5
0.020
Why?
Hypothermia, Induced
1
1991
17
0.020
Why?
Cardiomegaly
1
1991
30
0.020
Why?
Parathyroid Hormone
1
1991
45
0.020
Why?
Clinical Trials as Topic
1
1993
301
0.020
Why?
Whole Blood Coagulation Time
1
1990
1
0.020
Why?
Protamines
1
1990
4
0.020
Why?
Cerebrovascular Circulation
1
1991
93
0.020
Why?
Pressure
1
2010
51
0.020
Why?
Critical Care
1
2011
107
0.020
Why?
Academic Medical Centers
1
2011
158
0.020
Why?
Lorazepam
1
1989
3
0.020
Why?
Scopolamine
1
1989
5
0.020
Why?
Succinylcholine
1
1989
6
0.020
Why?
Equipment Safety
1
1989
20
0.020
Why?
Halothane
1
1988
1
0.020
Why?
Verapamil
1
1988
8
0.020
Why?
Atrioventricular Node
1
1988
5
0.020
Why?
Propranolol
1
1988
16
0.020
Why?
Analgesics, Opioid
1
2011
232
0.020
Why?
Predictive Value of Tests
1
1991
873
0.020
Why?
Electrophysiology
1
1988
70
0.020
Why?
Edrophonium
1
1987
1
0.020
Why?
Isoflurane
1
1987
1
0.020
Why?
Ultrasonography
1
2010
379
0.020
Why?
Pulmonary Wedge Pressure
1
1987
7
0.020
Why?
Blood Coagulation
1
1987
15
0.020
Why?
Hypertension, Pulmonary
1
1987
24
0.020
Why?
Catheterization
1
1987
58
0.020
Why?
Lung Diseases
1
1987
46
0.020
Why?
Neuromuscular Junction
1
1987
72
0.020
Why?
Aortic Valve Insufficiency
1
2007
24
0.020
Why?
Prognosis
1
1991
1495
0.020
Why?
Hemorrhage
1
1987
100
0.020
Why?
Heart Valve Prosthesis Implantation
1
2007
39
0.020
Why?
Echocardiography, Transesophageal
1
2006
42
0.020
Why?
Renal Artery Obstruction
1
2006
41
0.020
Why?
Heart Ventricles
1
2006
135
0.020
Why?
Evaluation Studies as Topic
2
1989
44
0.010
Why?
Multivariate Analysis
2
1998
683
0.010
Why?
Follow-Up Studies
1
2007
2265
0.010
Why?
Stroke Volume
2
1992
348
0.010
Why?
Preoperative Care
1
1999
114
0.010
Why?
Neuropsychological Tests
1
1999
371
0.010
Why?
Rabbits
1
1997
197
0.010
Why?
Cells, Cultured
1
1998
833
0.010
Why?
Milrinone
1
1995
2
0.010
Why?
Drug Evaluation
1
1995
14
0.010
Why?
Thyroxine
1
1995
16
0.010
Why?
Radioisotope Teletherapy
1
1974
1
0.010
Why?
Splenic Neoplasms
1
1974
1
0.010
Why?
Cobalt Radioisotopes
1
1974
3
0.010
Why?
Blood Cell Count
1
1974
29
0.010
Why?
Leukocyte Count
1
1974
49
0.010
Why?
Radiotherapy Dosage
1
1974
101
0.010
Why?
Blood Platelets
1
1974
39
0.010
Why?
Leukocytes
1
1974
57
0.010
Why?
Spleen
1
1974
87
0.010
Why?
Lymph Nodes
1
1974
107
0.010
Why?
Rats, Sprague-Dawley
1
1995
743
0.010
Why?
Cardiac Volume
1
1992
13
0.010
Why?
Ventricular Function, Right
1
1992
17
0.010
Why?
Placebos
1
1992
63
0.010
Why?
Vascular Resistance
1
1992
31
0.010
Why?
Costs and Cost Analysis
1
1992
99
0.010
Why?
Radioimmunoassay
1
1991
25
0.010
Why?
Hypotension, Controlled
1
1991
1
0.010
Why?
Magnesium
1
1991
30
0.010
Why?
Calcitriol
1
1991
25
0.010
Why?
Rats
1
1995
1595
0.010
Why?
Refractory Period, Electrophysiological
1
1988
2
0.010
Why?
Vecuronium Bromide
1
1987
1
0.000
Why?
Pancuronium
1
1987
2
0.000
Why?
Nitrous Oxide
1
1987
4
0.000
Why?
Platelet Count
1
1987
23
0.000
Why?
Atropine
1
1987
22
0.000
Why?
Probability
1
1987
158
0.000
Why?
Child
1
1974
2436
0.000
Why?
Equipment Design
1
1987
171
0.000
Why?
Regression Analysis
1
1987
293
0.000
Why?
Blood Pressure Determination
1
1987
100
0.000
Why?
Adolescent
1
1974
3537
0.000
Why?
Reproducibility of Results
1
1987
762
0.000
Why?
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Concepts (283)
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