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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
113
1.330
Why?
Coronary Artery Bypass
14
2017
100
1.140
Why?
Thoracoscopy
2
2018
11
1.050
Why?
Atrial Fibrillation
4
2020
410
0.920
Why?
Propofol
2
2022
20
0.830
Why?
Cardiac Tamponade
1
2023
10
0.810
Why?
Atrial Flutter
1
2023
20
0.810
Why?
Hemodynamics
15
2023
164
0.790
Why?
Methohexital
1
2022
7
0.750
Why?
Vasoconstriction
1
2022
42
0.750
Why?
Humans
56
2023
32282
0.700
Why?
Intubation, Intratracheal
3
2017
56
0.680
Why?
Goals
1
2020
34
0.630
Why?
Bronchoscopy
2
2017
54
0.580
Why?
Prospective Studies
12
2023
2316
0.580
Why?
Aorta, Thoracic
1
2019
81
0.570
Why?
Cardiology
1
2019
104
0.550
Why?
Stents
2
2008
159
0.510
Why?
Bronchi
1
2017
33
0.510
Why?
Postoperative Complications
6
2017
823
0.490
Why?
Cardiotonic Agents
9
2006
41
0.460
Why?
Collateral Circulation
1
2015
10
0.450
Why?
Coronary Thrombosis
3
2009
12
0.440
Why?
Coronary Circulation
1
2015
41
0.440
Why?
Cardiac Surgical Procedures
5
2011
77
0.410
Why?
Heart Failure
2
2020
728
0.410
Why?
Blood Loss, Surgical
2
2011
50
0.410
Why?
Myocardial Ischemia
5
2002
98
0.370
Why?
Coronary Vessels
2
2015
174
0.360
Why?
Coronary Artery Disease
1
2015
427
0.350
Why?
Epinephrine
7
1998
44
0.350
Why?
Pulmonary Atelectasis
1
2011
3
0.340
Why?
Respiratory Mechanics
1
2011
6
0.340
Why?
Antifibrinolytic Agents
1
2011
14
0.340
Why?
Mediastinal Neoplasms
1
2011
15
0.340
Why?
Intraoperative Complications
2
2011
55
0.340
Why?
Cardiopulmonary Bypass
10
2007
56
0.340
Why?
Male
35
2023
19441
0.320
Why?
Amrinone
5
1998
5
0.310
Why?
Randomized Controlled Trials as Topic
1
2011
541
0.290
Why?
Middle Aged
28
2017
11851
0.290
Why?
Anesthesia
4
2011
63
0.280
Why?
Oxygen
4
2020
138
0.280
Why?
Adrenergic beta-Antagonists
4
1999
59
0.280
Why?
Risk Factors
5
2020
3934
0.280
Why?
Perioperative Care
1
2008
51
0.270
Why?
Heart Rate
11
2007
362
0.270
Why?
Surgical Procedures, Operative
1
2008
79
0.260
Why?
Dobutamine
5
1998
54
0.260
Why?
Catheterization, Central Venous
1
2007
62
0.250
Why?
Aged, 80 and over
6
2023
3900
0.250
Why?
Electric Countershock
2
2022
18
0.250
Why?
Female
31
2017
19945
0.220
Why?
Postural Balance
1
2016
142
0.210
Why?
Dopamine
3
2006
262
0.210
Why?
Pesticides
1
2016
135
0.210
Why?
Occupational Exposure
1
2016
159
0.210
Why?
Positive-Pressure Respiration
1
2023
14
0.210
Why?
Transients and Migrants
1
2016
197
0.210
Why?
Emigrants and Immigrants
1
2016
198
0.200
Why?
Pulmonary Circulation
1
2022
4
0.190
Why?
Catheterization, Swan-Ganz
1
2002
4
0.190
Why?
Fentanyl
5
1991
33
0.180
Why?
Postoperative Care
2
2007
79
0.180
Why?
Propanolamines
2
1999
12
0.170
Why?
Postoperative Period
3
2017
95
0.170
Why?
Aged
17
2017
10263
0.170
Why?
Hispanic Americans
1
2016
772
0.170
Why?
Lung
1
2022
263
0.170
Why?
Nitroglycerin
1
2000
10
0.160
Why?
Electrocardiography, Ambulatory
2
1997
28
0.160
Why?
Vasodilator Agents
1
2000
62
0.160
Why?
Cardiac Pacing, Artificial
3
2007
13
0.160
Why?
Consensus
1
2019
87
0.150
Why?
Anesthetics
2
1989
21
0.150
Why?
Aorta
1
2019
125
0.140
Why?
Coronary Restenosis
2
2008
15
0.140
Why?
Isoproterenol
2
1997
17
0.140
Why?
Double-Blind Method
8
2000
565
0.140
Why?
Thoracic Surgery, Video-Assisted
1
2018
11
0.140
Why?
Calcium
4
1992
339
0.130
Why?
Ischemia
1
2018
115
0.130
Why?
Cardiac Output, Low
2
1994
9
0.130
Why?
Tachycardia
1
1997
6
0.130
Why?
Premedication
1
1997
15
0.130
Why?
Adrenergic beta-Agonists
1
1997
31
0.130
Why?
Electroconvulsive Therapy
1
1997
30
0.130
Why?
Heart
4
1995
177
0.130
Why?
Pharyngitis
1
2017
8
0.130
Why?
Cardiac Output
5
1995
33
0.130
Why?
Preanesthetic Medication
2
2002
3
0.120
Why?
Mental Recall
1
1996
47
0.120
Why?
Adult
10
2017
9259
0.120
Why?
Random Allocation
1
2017
247
0.120
Why?
Cohort Studies
1
2020
1840
0.120
Why?
Incidence
1
2019
1241
0.120
Why?
Anesthesiology
1
1996
46
0.120
Why?
Pain, Postoperative
1
2018
199
0.120
Why?
Bronchial Diseases
1
1995
4
0.110
Why?
Hemoptysis
1
1995
3
0.110
Why?
Hodgkin Disease
2
2011
16
0.110
Why?
Physician-Patient Relations
1
1996
179
0.110
Why?
Patient Satisfaction
1
1996
231
0.110
Why?
Dopamine Agents
1
1994
21
0.110
Why?
Anesthesia, Inhalation
2
2011
14
0.100
Why?
Anesthesia, Intravenous
3
1989
5
0.100
Why?
Myocardial Infarction
5
2000
466
0.090
Why?
Hypertension
2
1997
979
0.090
Why?
Treatment Outcome
1
2020
3416
0.090
Why?
Critical Illness
1
1993
87
0.090
Why?
Magnesium Sulfate
2
1991
13
0.090
Why?
Calcium Chloride
1
1992
3
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
17
0.090
Why?
Hypnotics and Sedatives
1
2011
31
0.090
Why?
Respiration, Artificial
1
2011
98
0.080
Why?
Kidney
1
1994
521
0.080
Why?
Biopsy
1
2011
252
0.080
Why?
Mitral Valve Insufficiency
1
2010
27
0.080
Why?
Prosthesis Failure
1
2010
51
0.080
Why?
Dose-Response Relationship, Drug
6
1998
717
0.080
Why?
Arrhythmias, Cardiac
3
2002
100
0.080
Why?
Heart Valve Prosthesis
1
2010
58
0.080
Why?
Etomidate
1
1989
5
0.080
Why?
Drug Interactions
4
1997
86
0.080
Why?
Pentobarbital
2
1988
4
0.070
Why?
Heart Atria
1
2009
81
0.070
Why?
Ticlopidine
1
2008
12
0.070
Why?
Drug-Eluting Stents
1
2008
14
0.070
Why?
Anesthesia, Conduction
1
2008
24
0.070
Why?
Echocardiography
1
2009
190
0.070
Why?
Aspirin
1
2008
59
0.070
Why?
Case-Control Studies
2
2016
854
0.070
Why?
Monitoring, Intraoperative
2
2006
40
0.070
Why?
Neuromuscular Depolarizing Agents
1
1988
5
0.070
Why?
Platelet Aggregation Inhibitors
1
2008
79
0.070
Why?
Medical Errors
1
2007
34
0.060
Why?
Cyclic AMP
2
1998
55
0.060
Why?
Intraoperative Care
1
2006
52
0.060
Why?
Blood Pressure
6
2006
861
0.060
Why?
Ventricular Dysfunction, Left
1
2006
168
0.050
Why?
Recovery of Function
1
2006
239
0.050
Why?
Myocardial Contraction
5
1998
59
0.050
Why?
Young Adult
1
2011
2649
0.050
Why?
Coronary Disease
2
1997
226
0.050
Why?
Infusions, Intra-Arterial
1
2002
6
0.050
Why?
Sex Factors
2
1996
655
0.050
Why?
Anesthesia, General
2
2006
30
0.050
Why?
North Carolina
1
2016
1300
0.050
Why?
Age Factors
3
1996
1179
0.040
Why?
Time Factors
5
2011
2205
0.040
Why?
Hypoxia-Ischemia, Brain
1
1999
3
0.040
Why?
Sufentanil
2
1989
6
0.040
Why?
Aorta, Abdominal
1
1999
31
0.040
Why?
Length of Stay
2
1999
321
0.040
Why?
Animals
7
1997
8199
0.040
Why?
Heparin
2
1990
65
0.040
Why?
Antioxidants
1
1999
122
0.040
Why?
Adrenergic Agonists
1
1998
8
0.040
Why?
Lymphocytes
1
1998
56
0.030
Why?
Heart Valves
1
1998
16
0.030
Why?
Heart Conduction System
2
1988
76
0.030
Why?
Myocardium
2
1997
184
0.030
Why?
Renal Circulation
1
1997
12
0.030
Why?
Sympathetic Nervous System
1
1997
34
0.030
Why?
Electrocardiography
3
1999
623
0.030
Why?
Nausea
1
1997
49
0.030
Why?
Chromonar
1
1997
1
0.030
Why?
Coumarins
1
1997
1
0.030
Why?
Myocardial Reperfusion
1
1997
9
0.030
Why?
Myocardial Reperfusion Injury
1
1997
19
0.030
Why?
Hospital-Patient Relations
1
1996
3
0.030
Why?
Intraoperative Period
2
1999
43
0.030
Why?
Injections, Intravenous
2
1999
99
0.030
Why?
Telephone
1
1996
61
0.030
Why?
Stimulation, Chemical
2
1995
16
0.030
Why?
Pyridones
1
1995
10
0.030
Why?
General Surgery
1
1996
84
0.030
Why?
Anticoagulants
1
1997
122
0.030
Why?
Attitude to Health
1
1996
138
0.030
Why?
Triiodothyronine
1
1995
8
0.030
Why?
Receptors, Adrenergic, beta
1
1995
10
0.030
Why?
Diuresis
1
1994
6
0.030
Why?
Natriuresis
1
1994
5
0.030
Why?
Logistic Models
1
1996
743
0.030
Why?
Health Status
1
1996
355
0.030
Why?
Statistics as Topic
1
1994
99
0.030
Why?
Splenectomy
1
1974
22
0.030
Why?
Dogs
3
1988
126
0.030
Why?
Retrospective Studies
2
2011
3626
0.020
Why?
Ventricular Function, Left
3
2006
264
0.020
Why?
Ephedrine
1
1992
3
0.020
Why?
Shock
1
1993
34
0.020
Why?
Drug Therapy, Combination
1
1993
292
0.020
Why?
Drug Combinations
2
1989
101
0.020
Why?
Pulmonary Artery
2
1992
26
0.020
Why?
Infusions, Intravenous
1
1992
97
0.020
Why?
Hypocalcemia
1
1991
14
0.020
Why?
Nitroprusside
1
1991
5
0.020
Why?
Hypothermia, Induced
1
1991
15
0.020
Why?
Cardiomegaly
1
1991
29
0.020
Why?
Parathyroid Hormone
1
1991
46
0.020
Why?
Clinical Trials as Topic
1
1993
312
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
69
0.020
Why?
Critical Care
1
2011
108
0.020
Why?
Academic Medical Centers
1
2011
161
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
19
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?
Analgesics, Opioid
1
2011
252
0.020
Why?
Propranolol
1
1988
17
0.020
Why?
Predictive Value of Tests
1
1991
883
0.020
Why?
Ultrasonography
1
2010
393
0.020
Why?
Electrophysiology
1
1988
76
0.020
Why?
Edrophonium
1
1987
1
0.020
Why?
Isoflurane
1
1987
1
0.020
Why?
Blood Coagulation
1
1987
15
0.020
Why?
Pulmonary Wedge Pressure
1
1987
7
0.020
Why?
Hypertension, Pulmonary
1
1987
22
0.020
Why?
Catheterization
1
1987
55
0.020
Why?
Lung Diseases
1
1987
50
0.020
Why?
Neuromuscular Junction
1
1987
70
0.020
Why?
Prognosis
1
1991
1534
0.020
Why?
Aortic Valve Insufficiency
1
2007
26
0.020
Why?
Hemorrhage
1
1987
95
0.020
Why?
Heart Valve Prosthesis Implantation
1
2007
46
0.020
Why?
Renal Artery Obstruction
1
2006
38
0.010
Why?
Echocardiography, Transesophageal
1
2006
58
0.010
Why?
Heart Ventricles
1
2006
146
0.010
Why?
Multivariate Analysis
2
1998
651
0.010
Why?
Evaluation Studies as Topic
2
1989
39
0.010
Why?
Follow-Up Studies
1
2007
2240
0.010
Why?
Stroke Volume
2
1992
417
0.010
Why?
Preoperative Care
1
1999
125
0.010
Why?
Neuropsychological Tests
1
1999
327
0.010
Why?
Rabbits
1
1997
219
0.010
Why?
Cells, Cultured
1
1998
839
0.010
Why?
Milrinone
1
1995
2
0.010
Why?
Drug Evaluation
1
1995
15
0.010
Why?
Thyroxine
1
1995
16
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
28
0.010
Why?
Leukocyte Count
1
1974
46
0.010
Why?
Radiotherapy Dosage
1
1974
107
0.010
Why?
Blood Platelets
1
1974
59
0.010
Why?
Leukocytes
1
1974
60
0.010
Why?
Spleen
1
1974
84
0.010
Why?
Lymph Nodes
1
1974
113
0.010
Why?
Cardiac Volume
1
1992
13
0.010
Why?
Ventricular Function, Right
1
1992
17
0.010
Why?
Vascular Resistance
1
1992
32
0.010
Why?
Placebos
1
1992
68
0.010
Why?
Rats, Sprague-Dawley
1
1995
897
0.010
Why?
Costs and Cost Analysis
1
1992
106
0.010
Why?
Radioimmunoassay
1
1991
25
0.010
Why?
Hypotension, Controlled
1
1991
1
0.010
Why?
Magnesium
1
1991
29
0.010
Why?
Calcitriol
1
1991
29
0.010
Why?
Rats
1
1995
1895
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
3
0.000
Why?
Platelet Count
1
1987
23
0.000
Why?
Atropine
1
1987
19
0.000
Why?
Child
1
1974
2435
0.000
Why?
Probability
1
1987
155
0.000
Why?
Equipment Design
1
1987
178
0.000
Why?
Regression Analysis
1
1987
273
0.000
Why?
Blood Pressure Determination
1
1987
106
0.000
Why?
Adolescent
1
1974
3519
0.000
Why?
Reproducibility of Results
1
1987
757
0.000
Why?
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Concepts (283)
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