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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
115
1.340
Why?
Coronary Artery Bypass
14
2017
112
1.140
Why?
Thoracoscopy
2
2018
12
1.060
Why?
Atrial Fibrillation
4
2020
411
0.920
Why?
Propofol
2
2022
22
0.840
Why?
Cardiac Tamponade
1
2023
10
0.820
Why?
Atrial Flutter
1
2023
20
0.810
Why?
Hemodynamics
15
2023
168
0.790
Why?
Methohexital
1
2022
7
0.760
Why?
Vasoconstriction
1
2022
46
0.760
Why?
Humans
56
2023
34474
0.680
Why?
Intubation, Intratracheal
3
2017
74
0.670
Why?
Goals
1
2020
36
0.640
Why?
Bronchoscopy
2
2017
56
0.590
Why?
Aorta, Thoracic
1
2019
87
0.580
Why?
Prospective Studies
12
2023
2461
0.570
Why?
Cardiology
1
2019
110
0.560
Why?
Stents
2
2008
167
0.510
Why?
Bronchi
1
2017
41
0.510
Why?
Postoperative Complications
6
2017
849
0.490
Why?
Cardiotonic Agents
9
2006
52
0.460
Why?
Collateral Circulation
1
2015
10
0.450
Why?
Coronary Thrombosis
3
2009
14
0.440
Why?
Coronary Circulation
1
2015
44
0.440
Why?
Cardiac Surgical Procedures
5
2011
83
0.410
Why?
Blood Loss, Surgical
2
2011
55
0.410
Why?
Heart Failure
2
2020
780
0.410
Why?
Myocardial Ischemia
5
2002
114
0.370
Why?
Coronary Vessels
2
2015
180
0.360
Why?
Epinephrine
7
1998
45
0.350
Why?
Pulmonary Atelectasis
1
2011
3
0.350
Why?
Respiratory Mechanics
1
2011
6
0.350
Why?
Antifibrinolytic Agents
1
2011
16
0.340
Why?
Coronary Artery Disease
1
2015
441
0.340
Why?
Mediastinal Neoplasms
1
2011
15
0.340
Why?
Cardiopulmonary Bypass
10
2007
58
0.340
Why?
Intraoperative Complications
2
2011
62
0.340
Why?
Male
35
2023
20697
0.320
Why?
Amrinone
5
1998
5
0.310
Why?
Randomized Controlled Trials as Topic
1
2011
565
0.290
Why?
Adrenergic beta-Antagonists
4
1999
67
0.280
Why?
Anesthesia
4
2011
72
0.280
Why?
Oxygen
4
2020
152
0.280
Why?
Middle Aged
28
2017
12703
0.280
Why?
Risk Factors
5
2020
4136
0.280
Why?
Perioperative Care
1
2008
57
0.270
Why?
Heart Rate
11
2007
372
0.270
Why?
Surgical Procedures, Operative
1
2008
79
0.260
Why?
Dobutamine
5
1998
71
0.260
Why?
Catheterization, Central Venous
1
2007
64
0.250
Why?
Electric Countershock
2
2022
18
0.250
Why?
Aged, 80 and over
6
2023
4150
0.250
Why?
Female
31
2017
21490
0.220
Why?
Dopamine
3
2006
268
0.210
Why?
Postural Balance
1
2016
152
0.210
Why?
Positive-Pressure Respiration
1
2023
14
0.210
Why?
Pesticides
1
2016
201
0.200
Why?
Occupational Exposure
1
2016
237
0.200
Why?
Pulmonary Circulation
1
2022
4
0.190
Why?
Emigrants and Immigrants
1
2016
248
0.190
Why?
Transients and Migrants
1
2016
304
0.190
Why?
Catheterization, Swan-Ganz
1
2002
4
0.190
Why?
Fentanyl
5
1991
37
0.180
Why?
Postoperative Care
2
2007
80
0.180
Why?
Propanolamines
2
1999
12
0.170
Why?
Postoperative Period
3
2017
104
0.170
Why?
Aged
17
2017
10998
0.170
Why?
Lung
1
2022
279
0.170
Why?
Nitroglycerin
1
2000
11
0.170
Why?
Electrocardiography, Ambulatory
2
1997
28
0.160
Why?
Vasodilator Agents
1
2000
69
0.160
Why?
Cardiac Pacing, Artificial
3
2007
13
0.160
Why?
Hispanic Americans
1
2016
948
0.160
Why?
Consensus
1
2019
91
0.150
Why?
Anesthetics
2
1989
21
0.150
Why?
Aorta
1
2019
139
0.140
Why?
Coronary Restenosis
2
2008
15
0.140
Why?
Isoproterenol
2
1997
19
0.140
Why?
Double-Blind Method
8
2000
597
0.140
Why?
Thoracic Surgery, Video-Assisted
1
2018
13
0.140
Why?
Calcium
4
1992
343
0.140
Why?
Cardiac Output, Low
2
1994
10
0.130
Why?
Tachycardia
1
1997
6
0.130
Why?
Ischemia
1
2018
119
0.130
Why?
Premedication
1
1997
17
0.130
Why?
Electroconvulsive Therapy
1
1997
30
0.130
Why?
Adrenergic beta-Agonists
1
1997
36
0.130
Why?
Heart
4
1995
191
0.130
Why?
Pharyngitis
1
2017
10
0.130
Why?
Cardiac Output
5
1995
37
0.130
Why?
Preanesthetic Medication
2
2002
3
0.120
Why?
Mental Recall
1
1996
52
0.120
Why?
Random Allocation
1
2017
257
0.120
Why?
Cohort Studies
1
2020
1910
0.120
Why?
Adult
10
2017
10015
0.120
Why?
Incidence
1
2019
1288
0.120
Why?
Anesthesiology
1
1996
53
0.120
Why?
Pain, Postoperative
1
2018
205
0.120
Why?
Bronchial Diseases
1
1995
4
0.120
Why?
Hemoptysis
1
1995
3
0.120
Why?
Hodgkin Disease
2
2011
16
0.110
Why?
Physician-Patient Relations
1
1996
188
0.110
Why?
Patient Satisfaction
1
1996
245
0.110
Why?
Dopamine Agents
1
1994
21
0.110
Why?
Anesthesia, Inhalation
2
2011
18
0.100
Why?
Anesthesia, Intravenous
3
1989
6
0.100
Why?
Myocardial Infarction
5
2000
515
0.090
Why?
Critical Illness
1
1993
89
0.090
Why?
Hypertension
2
1997
1024
0.090
Why?
Magnesium Sulfate
2
1991
14
0.090
Why?
Calcium Chloride
1
1992
3
0.090
Why?
Treatment Outcome
1
2020
3618
0.090
Why?
Dexmedetomidine
1
2011
12
0.090
Why?
Coronary Vasospasm
1
1991
4
0.090
Why?
Splanchnic Circulation
1
2011
3
0.090
Why?
Bradycardia
1
2011
19
0.090
Why?
Hypnotics and Sedatives
1
2011
32
0.090
Why?
Kidney
1
1994
528
0.080
Why?
Respiration, Artificial
1
2011
105
0.080
Why?
Biopsy
1
2011
268
0.080
Why?
Prosthesis Failure
1
2010
58
0.080
Why?
Arrhythmias, Cardiac
3
2002
103
0.080
Why?
Mitral Valve Insufficiency
1
2010
34
0.080
Why?
Dose-Response Relationship, Drug
6
1998
755
0.080
Why?
Heart Valve Prosthesis
1
2010
61
0.080
Why?
Etomidate
1
1989
5
0.080
Why?
Drug Interactions
4
1997
90
0.080
Why?
Pentobarbital
2
1988
4
0.070
Why?
Heart Atria
1
2009
84
0.070
Why?
Ticlopidine
1
2008
17
0.070
Why?
Drug-Eluting Stents
1
2008
14
0.070
Why?
Anesthesia, Conduction
1
2008
27
0.070
Why?
Echocardiography
1
2009
202
0.070
Why?
Monitoring, Intraoperative
2
2006
45
0.070
Why?
Aspirin
1
2008
65
0.070
Why?
Neuromuscular Depolarizing Agents
1
1988
5
0.070
Why?
Case-Control Studies
2
2016
924
0.070
Why?
Platelet Aggregation Inhibitors
1
2008
94
0.070
Why?
Medical Errors
1
2007
37
0.060
Why?
Cyclic AMP
2
1998
56
0.060
Why?
Intraoperative Care
1
2006
54
0.060
Why?
Blood Pressure
6
2006
901
0.060
Why?
Recovery of Function
1
2006
251
0.060
Why?
Ventricular Dysfunction, Left
1
2006
184
0.050
Why?
Myocardial Contraction
5
1998
66
0.050
Why?
Young Adult
1
2011
2825
0.050
Why?
Infusions, Intra-Arterial
1
2002
6
0.050
Why?
Coronary Disease
2
1997
239
0.050
Why?
Sex Factors
2
1996
707
0.050
Why?
Anesthesia, General
2
2006
35
0.050
Why?
Age Factors
3
1996
1261
0.040
Why?
North Carolina
1
2016
1612
0.040
Why?
Hypoxia-Ischemia, Brain
1
1999
3
0.040
Why?
Time Factors
5
2011
2352
0.040
Why?
Sufentanil
2
1989
6
0.040
Why?
Aorta, Abdominal
1
1999
33
0.040
Why?
Length of Stay
2
1999
335
0.040
Why?
Heparin
2
1990
74
0.040
Why?
Antioxidants
1
1999
126
0.040
Why?
Animals
7
1997
8544
0.040
Why?
Adrenergic Agonists
1
1998
8
0.040
Why?
Lymphocytes
1
1998
59
0.030
Why?
Heart Valves
1
1998
16
0.030
Why?
Heart Conduction System
2
1988
80
0.030
Why?
Myocardium
2
1997
199
0.030
Why?
Renal Circulation
1
1997
13
0.030
Why?
Sympathetic Nervous System
1
1997
34
0.030
Why?
Electrocardiography
3
1999
657
0.030
Why?
Nausea
1
1997
55
0.030
Why?
Chromonar
1
1997
1
0.030
Why?
Coumarins
1
1997
1
0.030
Why?
Myocardial Reperfusion
1
1997
10
0.030
Why?
Myocardial Reperfusion Injury
1
1997
20
0.030
Why?
Hospital-Patient Relations
1
1996
3
0.030
Why?
Intraoperative Period
2
1999
44
0.030
Why?
Injections, Intravenous
2
1999
101
0.030
Why?
Telephone
1
1996
67
0.030
Why?
Stimulation, Chemical
2
1995
16
0.030
Why?
Pyridones
1
1995
11
0.030
Why?
General Surgery
1
1996
85
0.030
Why?
Anticoagulants
1
1997
143
0.030
Why?
Triiodothyronine
1
1995
8
0.030
Why?
Receptors, Adrenergic, beta
1
1995
12
0.030
Why?
Attitude to Health
1
1996
161
0.030
Why?
Diuresis
1
1994
6
0.030
Why?
Natriuresis
1
1994
5
0.030
Why?
Logistic Models
1
1996
808
0.030
Why?
Statistics as Topic
1
1994
111
0.030
Why?
Health Status
1
1996
411
0.030
Why?
Splenectomy
1
1974
23
0.030
Why?
Dogs
3
1988
130
0.030
Why?
Retrospective Studies
2
2011
3812
0.020
Why?
Ephedrine
1
1992
3
0.020
Why?
Ventricular Function, Left
3
2006
287
0.020
Why?
Shock
1
1993
34
0.020
Why?
Drug Therapy, Combination
1
1993
318
0.020
Why?
Drug Combinations
2
1989
107
0.020
Why?
Pulmonary Artery
2
1992
27
0.020
Why?
Infusions, Intravenous
1
1992
110
0.020
Why?
Hypocalcemia
1
1991
14
0.020
Why?
Nitroprusside
1
1991
5
0.020
Why?
Hypothermia, Induced
1
1991
16
0.020
Why?
Cardiomegaly
1
1991
31
0.020
Why?
Parathyroid Hormone
1
1991
47
0.020
Why?
Clinical Trials as Topic
1
1993
325
0.020
Why?
Whole Blood Coagulation Time
1
1990
1
0.020
Why?
Protamines
1
1990
4
0.020
Why?
Cerebrovascular Circulation
1
1991
104
0.020
Why?
Pressure
1
2010
70
0.020
Why?
Critical Care
1
2011
113
0.020
Why?
Academic Medical Centers
1
2011
168
0.020
Why?
Lorazepam
1
1989
3
0.020
Why?
Scopolamine
1
1989
8
0.020
Why?
Succinylcholine
1
1989
6
0.020
Why?
Equipment Safety
1
1989
21
0.020
Why?
Halothane
1
1988
1
0.020
Why?
Verapamil
1
1988
8
0.020
Why?
Atrioventricular Node
1
1988
6
0.020
Why?
Propranolol
1
1988
18
0.020
Why?
Analgesics, Opioid
1
2011
265
0.020
Why?
Predictive Value of Tests
1
1991
934
0.020
Why?
Ultrasonography
1
2010
417
0.020
Why?
Electrophysiology
1
1988
77
0.020
Why?
Edrophonium
1
1987
1
0.020
Why?
Isoflurane
1
1987
1
0.020
Why?
Pulmonary Wedge Pressure
1
1987
7
0.020
Why?
Blood Coagulation
1
1987
20
0.020
Why?
Hypertension, Pulmonary
1
1987
23
0.020
Why?
Catheterization
1
1987
62
0.020
Why?
Lung Diseases
1
1987
51
0.020
Why?
Neuromuscular Junction
1
1987
76
0.020
Why?
Prognosis
1
1991
1603
0.020
Why?
Aortic Valve Insufficiency
1
2007
28
0.020
Why?
Hemorrhage
1
1987
109
0.020
Why?
Heart Valve Prosthesis Implantation
1
2007
50
0.020
Why?
Renal Artery Obstruction
1
2006
42
0.010
Why?
Echocardiography, Transesophageal
1
2006
61
0.010
Why?
Heart Ventricles
1
2006
155
0.010
Why?
Multivariate Analysis
2
1998
703
0.010
Why?
Evaluation Studies as Topic
2
1989
43
0.010
Why?
Follow-Up Studies
1
2007
2366
0.010
Why?
Stroke Volume
2
1992
440
0.010
Why?
Preoperative Care
1
1999
128
0.010
Why?
Neuropsychological Tests
1
1999
372
0.010
Why?
Rabbits
1
1997
231
0.010
Why?
Cells, Cultured
1
1998
887
0.010
Why?
Milrinone
1
1995
2
0.010
Why?
Drug Evaluation
1
1995
15
0.010
Why?
Thyroxine
1
1995
18
0.010
Why?
Radioisotope Teletherapy
1
1974
1
0.010
Why?
Cobalt Radioisotopes
1
1974
3
0.010
Why?
Splenic Neoplasms
1
1974
2
0.010
Why?
Blood Cell Count
1
1974
30
0.010
Why?
Leukocyte Count
1
1974
49
0.010
Why?
Radiotherapy Dosage
1
1974
110
0.010
Why?
Blood Platelets
1
1974
61
0.010
Why?
Leukocytes
1
1974
61
0.010
Why?
Spleen
1
1974
85
0.010
Why?
Lymph Nodes
1
1974
120
0.010
Why?
Cardiac Volume
1
1992
13
0.010
Why?
Vascular Resistance
1
1992
33
0.010
Why?
Placebos
1
1992
69
0.010
Why?
Ventricular Function, Right
1
1992
20
0.010
Why?
Rats, Sprague-Dawley
1
1995
923
0.010
Why?
Costs and Cost Analysis
1
1992
113
0.010
Why?
Radioimmunoassay
1
1991
28
0.010
Why?
Hypotension, Controlled
1
1991
1
0.010
Why?
Magnesium
1
1991
30
0.010
Why?
Calcitriol
1
1991
29
0.010
Why?
Rats
1
1995
1946
0.010
Why?
Refractory Period, Electrophysiological
1
1988
2
0.000
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
25
0.000
Why?
Atropine
1
1987
23
0.000
Why?
Probability
1
1987
168
0.000
Why?
Child
1
1974
2613
0.000
Why?
Equipment Design
1
1987
192
0.000
Why?
Regression Analysis
1
1987
310
0.000
Why?
Blood Pressure Determination
1
1987
108
0.000
Why?
Adolescent
1
1974
3799
0.000
Why?
Reproducibility of Results
1
1987
819
0.000
Why?
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Concepts (283)
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