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Prem Shekar

Concepts (334)

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?
Cardiac Surgical Procedures
25
2023
270
3.640
Why?
Heart Valve Prosthesis Implantation
24
2021
176
3.290
Why?
Heart Valve Diseases
12
2023
95
1.840
Why?
Aortic Valve
14
2021
190
1.660
Why?
Heart-Assist Devices
8
2019
149
1.420
Why?
Mitral Valve
10
2023
127
1.330
Why?
Postoperative Complications
19
2021
1301
1.280
Why?
Coronary Artery Bypass
14
2023
297
1.240
Why?
Mitral Valve Insufficiency
6
2021
95
1.010
Why?
Circulatory Arrest, Deep Hypothermia Induced
4
2014
6
0.990
Why?
Heart Valve Prosthesis
9
2021
114
0.910
Why?
Intraoperative Complications
4
2019
93
0.900
Why?
Aorta, Thoracic
4
2016
77
0.890
Why?
Cardiopulmonary Bypass
8
2014
58
0.810
Why?
Reoperation
12
2020
292
0.810
Why?
Vascular Surgical Procedures
3
2015
244
0.810
Why?
Aortic Valve Stenosis
7
2020
190
0.800
Why?
Hospital Mortality
12
2021
870
0.760
Why?
Retrospective Studies
48
2021
6742
0.730
Why?
Treatment Outcome
41
2023
5697
0.720
Why?
Heart Failure
6
2019
926
0.700
Why?
Sternum
6
2021
29
0.690
Why?
Aged
57
2021
14664
0.680
Why?
Prosthesis Failure
6
2021
79
0.660
Why?
Middle Aged
58
2021
17923
0.650
Why?
Bioprosthesis
6
2021
42
0.620
Why?
Risk Assessment
12
2021
2049
0.620
Why?
Prosthesis Design
10
2021
224
0.620
Why?
Aortic Valve Insufficiency
2
2012
43
0.610
Why?
Sternotomy
4
2021
13
0.610
Why?
Minimally Invasive Surgical Procedures
8
2020
128
0.600
Why?
Humans
91
2023
64279
0.600
Why?
Male
69
2021
30323
0.590
Why?
Intra-Aortic Balloon Pumping
3
2014
17
0.590
Why?
Female
71
2021
33382
0.580
Why?
Calcinosis
1
2019
86
0.580
Why?
Echocardiography, Transesophageal
8
2021
113
0.570
Why?
Pulmonary Embolism
5
2018
176
0.550
Why?
Aorta
4
2018
110
0.530
Why?
Blood Vessel Prosthesis Implantation
3
2020
275
0.500
Why?
Aged, 80 and over
29
2021
5528
0.500
Why?
Aortic Diseases
3
2020
65
0.500
Why?
Jehovah's Witnesses
1
2015
18
0.460
Why?
Adult
32
2022
17133
0.450
Why?
Ventricular Dysfunction, Left
2
2007
165
0.450
Why?
Heart, Artificial
1
2014
2
0.450
Why?
Cerebrovascular Circulation
2
2014
183
0.450
Why?
Coronary Artery Disease
4
2020
320
0.430
Why?
Perfusion
1
2014
72
0.430
Why?
Atherosclerosis
2
2014
156
0.430
Why?
Risk Factors
26
2021
5342
0.420
Why?
Extracorporeal Membrane Oxygenation
1
2014
63
0.410
Why?
Follow-Up Studies
16
2021
2482
0.410
Why?
Transcatheter Aortic Valve Replacement
4
2020
112
0.390
Why?
Proportional Hazards Models
12
2021
735
0.390
Why?
Embolectomy
4
2018
15
0.380
Why?
Survival Rate
8
2019
859
0.350
Why?
Acute Kidney Injury
4
2018
142
0.340
Why?
Heart
2
2022
288
0.330
Why?
Ventricular Function, Left
1
2012
271
0.330
Why?
Aortic Aneurysm
5
2020
82
0.330
Why?
Time Factors
16
2019
3726
0.320
Why?
Heart Diseases
2
2019
220
0.310
Why?
Atrial Fibrillation
4
2022
854
0.310
Why?
Boston
8
2018
255
0.310
Why?
Heart Transplantation
4
2019
176
0.290
Why?
Catheterization
2
2006
113
0.280
Why?
Surgical Wound Infection
2
2021
122
0.280
Why?
Lung Diseases, Interstitial
2
2020
140
0.280
Why?
Coronary Vessels
2
2008
124
0.270
Why?
Cardiovascular Diseases
1
2015
848
0.270
Why?
Hemoglobinopathies
1
2007
7
0.270
Why?
Hemoglobins, Abnormal
1
2007
6
0.270
Why?
Cardiac Valve Annuloplasty
2
2020
7
0.260
Why?
Angioplasty, Balloon, Coronary
2
2004
167
0.260
Why?
Propensity Score
5
2019
167
0.250
Why?
Renal Insufficiency, Chronic
2
2019
147
0.250
Why?
Kaplan-Meier Estimate
10
2018
423
0.250
Why?
Ticlopidine
3
2015
49
0.240
Why?
Myocardial Ischemia
3
2021
117
0.240
Why?
Blood Pressure Monitors
1
2005
3
0.240
Why?
Hypoxia, Brain
1
2005
10
0.240
Why?
Patient Discharge
3
2017
507
0.230
Why?
Platelet Function Tests
2
2015
11
0.230
Why?
Receptors, Purinergic P2Y12
2
2015
5
0.230
Why?
Age Factors
10
2018
1570
0.230
Why?
Incidence
6
2021
1385
0.230
Why?
Purinergic P2Y Receptor Antagonists
2
2015
14
0.230
Why?
Thrombectomy
1
2007
242
0.220
Why?
Atherectomy
1
2004
8
0.220
Why?
Length of Stay
6
2021
819
0.220
Why?
Atherectomy, Coronary
1
2004
12
0.220
Why?
Heart Neoplasms
3
2012
36
0.220
Why?
Echocardiography
4
2021
509
0.220
Why?
Platelet Aggregation Inhibitors
3
2015
233
0.210
Why?
Blood Platelets
2
2015
104
0.210
Why?
Hematoma
1
2004
80
0.210
Why?
Analgesics, Opioid
2
2019
531
0.210
Why?
Cardiomyopathy, Hypertrophic
2
2023
774
0.210
Why?
Point-of-Care Systems
2
2015
132
0.200
Why?
Hemorrhage
2
2015
275
0.200
Why?
Blood Pressure
1
2005
517
0.200
Why?
Vascular Calcification
2
2014
26
0.200
Why?
Heart Ventricles
2
2016
265
0.190
Why?
Aortic Aneurysm, Abdominal
1
2006
219
0.190
Why?
Severity of Illness Index
5
2020
1561
0.190
Why?
Negative-Pressure Wound Therapy
1
2021
12
0.180
Why?
Opioid-Related Disorders
2
2019
513
0.180
Why?
Ventricular Outflow Obstruction
1
2022
120
0.170
Why?
Mammary Arteries
1
2020
11
0.170
Why?
Endarterectomy
2
2012
16
0.170
Why?
Suture Techniques
2
2020
100
0.170
Why?
Health Facility Size
1
2020
16
0.160
Why?
Hospital Bed Capacity
1
2020
27
0.160
Why?
Thoracic Surgery
1
2021
76
0.160
Why?
Vancomycin
2
2018
39
0.160
Why?
Gene Expression Regulation
2
2017
1621
0.160
Why?
Forecasting
1
2021
233
0.160
Why?
Thoracotomy
1
2020
47
0.160
Why?
Tricuspid Valve Insufficiency
1
2020
20
0.160
Why?
Pulsatile Flow
1
2019
8
0.160
Why?
Glucuronidase
1
2019
25
0.160
Why?
Heart Atria
3
2017
136
0.150
Why?
Heart Valves
2
2017
26
0.150
Why?
Thrombolytic Therapy
2
2018
193
0.150
Why?
Transforming Growth Factor beta1
1
2019
60
0.150
Why?
Transplant Recipients
1
2019
37
0.150
Why?
Medical Staff, Hospital
1
2019
59
0.150
Why?
Contraindications
3
2015
52
0.150
Why?
Wnt Signaling Pathway
1
2019
82
0.150
Why?
Patient Selection
5
2014
487
0.140
Why?
Wound Infection
1
2018
29
0.140
Why?
Postoperative Hemorrhage
1
2018
40
0.140
Why?
Databases, Factual
5
2020
856
0.140
Why?
United States
6
2020
7923
0.130
Why?
Myocardium
1
2019
288
0.130
Why?
Heart Arrest, Induced
2
2008
13
0.130
Why?
Hodgkin Disease
1
2017
54
0.130
Why?
Sinus of Valsalva
1
2016
7
0.130
Why?
Quantitative Trait Loci
1
2017
77
0.130
Why?
Radiation Injuries
1
2017
66
0.130
Why?
Logistic Models
6
2018
1270
0.120
Why?
Cohort Studies
7
2019
2605
0.120
Why?
Registries
3
2016
885
0.120
Why?
Aortic Aneurysm, Thoracic
1
2016
108
0.120
Why?
Wound Healing
1
2016
192
0.120
Why?
Cardiac Catheterization
2
2010
292
0.120
Why?
Alleles
1
2016
448
0.110
Why?
Quality of Health Care
1
2019
526
0.110
Why?
Ultrasonography
3
2012
486
0.110
Why?
Genotype
1
2016
668
0.110
Why?
Polymorphism, Single Nucleotide
1
2017
497
0.110
Why?
Clinical Competence
1
2019
730
0.110
Why?
Shock, Cardiogenic
2
2005
104
0.110
Why?
Prognosis
5
2018
1769
0.100
Why?
Young Adult
5
2020
4781
0.100
Why?
Tomography, X-Ray Computed
5
2015
1669
0.100
Why?
Genetic Predisposition to Disease
1
2017
727
0.100
Why?
Quality of Life
2
2011
1257
0.100
Why?
Survival Analysis
4
2018
587
0.100
Why?
Lupus Erythematosus, Discoid
1
2012
8
0.090
Why?
Mitral Valve Annuloplasty
1
2012
19
0.090
Why?
Surgical Wound Dehiscence
1
2012
16
0.090
Why?
Constriction
1
2012
9
0.090
Why?
Pulmonary Edema
1
2012
30
0.090
Why?
Coronary Circulation
1
2012
53
0.090
Why?
Heparin
2
2010
116
0.090
Why?
Hemangiosarcoma
1
2012
25
0.090
Why?
Predictive Value of Tests
4
2017
1105
0.090
Why?
Myxoma
1
2011
13
0.090
Why?
Perioperative Care
1
2012
86
0.090
Why?
Embolism, Paradoxical
1
2010
14
0.080
Why?
Comorbidity
3
2016
1119
0.080
Why?
Health Status Indicators
1
2010
95
0.080
Why?
Hemostatic Techniques
1
2009
11
0.080
Why?
Neoplasm Recurrence, Local
1
2012
358
0.080
Why?
Operative Time
2
2020
91
0.080
Why?
DNA, Mitochondrial
1
2010
87
0.080
Why?
Adolescent
5
2020
6305
0.070
Why?
Hyperkalemia
1
2008
20
0.070
Why?
Anticoagulants
2
2010
511
0.070
Why?
Recurrence
2
2012
652
0.070
Why?
Survivors
1
2009
182
0.070
Why?
Breast Neoplasms
1
2017
1213
0.070
Why?
Feasibility Studies
2
2008
577
0.070
Why?
Hospitalization
3
2020
1368
0.070
Why?
Risk
2
2020
379
0.070
Why?
DNA Replication
1
2010
241
0.070
Why?
Multivariate Analysis
3
2016
930
0.070
Why?
Stroke
3
2018
1196
0.070
Why?
Ischemic Attack, Transient
1
2008
97
0.060
Why?
Combined Modality Therapy
2
2021
375
0.060
Why?
Erythrocyte Transfusion
1
2007
76
0.060
Why?
Ultrasonography, Interventional
1
2008
116
0.060
Why?
Mitochondria
1
2010
384
0.060
Why?
Hypertension, Pulmonary
1
2007
97
0.060
Why?
Shock
1
2006
32
0.060
Why?
Blood Transfusion
1
2007
162
0.060
Why?
Academic Medical Centers
2
2019
313
0.060
Why?
Anesthesia, General
1
2006
46
0.060
Why?
Axillary Artery
1
2005
8
0.060
Why?
Aortography
1
2006
57
0.060
Why?
Femoral Vein
1
2005
18
0.060
Why?
Body Surface Area
1
2005
11
0.060
Why?
Thromboembolism
1
2006
73
0.060
Why?
Intraoperative Care
1
2005
38
0.060
Why?
Hypothermia, Induced
1
2005
40
0.060
Why?
Stroke Volume
1
2007
330
0.060
Why?
High-Throughput Nucleotide Sequencing
2
2017
313
0.060
Why?
Postoperative Care
1
2005
124
0.060
Why?
Femoral Artery
1
2006
99
0.060
Why?
Pericardiocentesis
1
2004
4
0.060
Why?
Radial Artery
1
2005
54
0.060
Why?
Coronary Restenosis
1
2004
20
0.060
Why?
Electroencephalography
1
2005
151
0.060
Why?
Cardiac Tamponade
1
2004
15
0.050
Why?
Graft Occlusion, Vascular
1
2004
60
0.050
Why?
Postoperative Period
2
2017
137
0.050
Why?
Fatal Outcome
1
2004
125
0.050
Why?
Emergencies
1
2004
121
0.050
Why?
Foreign Bodies
1
2004
55
0.050
Why?
Pacemaker, Artificial
1
2004
49
0.050
Why?
Cerebral Cortex
1
2005
267
0.050
Why?
Blood Vessel Prosthesis
1
2005
212
0.050
Why?
Odds Ratio
3
2012
759
0.050
Why?
Disease Progression
2
2018
1176
0.050
Why?
Heart Arrest
1
2005
177
0.050
Why?
Leukemia-Lymphoma, Adult T-Cell
1
2002
10
0.050
Why?
Bone Wires
1
2021
5
0.050
Why?
ROC Curve
2
2015
288
0.040
Why?
Bone Plates
1
2021
38
0.040
Why?
Acute Disease
2
2018
672
0.040
Why?
Internal Mammary-Coronary Artery Anastomosis
1
2020
4
0.040
Why?
Stents
1
2004
493
0.040
Why?
Transplantation, Homologous
1
2021
249
0.040
Why?
Surgical Flaps
1
2021
117
0.040
Why?
Aortic Rupture
1
2020
45
0.040
Why?
Dyspnea
2
2011
124
0.040
Why?
Thoracic Surgical Procedures
1
2020
42
0.040
Why?
Massachusetts
2
2019
2096
0.040
Why?
Hospital Costs
1
2020
126
0.040
Why?
Benchmarking
1
2020
134
0.040
Why?
Morbidity
1
2019
111
0.040
Why?
Tissue and Organ Procurement
1
2019
44
0.040
Why?
Child
3
2022
4583
0.040
Why?
Fibrosis
1
2019
162
0.040
Why?
Hospitals, Teaching
1
2019
106
0.040
Why?
Risk Adjustment
1
2019
94
0.040
Why?
Myocytes, Cardiac
1
2019
120
0.040
Why?
Seasons
1
2019
138
0.040
Why?
Hospitals
1
2021
390
0.040
Why?
Trachea
1
1998
85
0.040
Why?
Prospective Studies
2
2016
3318
0.030
Why?
Restraint, Physical
1
2018
41
0.030
Why?
Chi-Square Distribution
2
2010
412
0.030
Why?
Ventricular Dysfunction, Right
1
2018
50
0.030
Why?
NAV1.8 Voltage-Gated Sodium Channel
1
2017
3
0.030
Why?
Sex Factors
1
2020
980
0.030
Why?
Cyclic GMP
1
2017
31
0.030
Why?
Radiotherapy
1
2017
64
0.030
Why?
Ointments
1
2016
7
0.030
Why?
Monitoring, Intraoperative
2
2008
46
0.030
Why?
Venous Thrombosis
1
2018
113
0.030
Why?
Administration, Topical
1
2016
51
0.030
Why?
Body Size
1
2016
23
0.030
Why?
Genotyping Techniques
1
2016
21
0.030
Why?
Dilatation, Pathologic
1
2016
31
0.030
Why?
Membrane Potentials
1
2017
141
0.030
Why?
Delivery of Health Care
1
2021
437
0.030
Why?
Genetic Association Studies
1
2017
120
0.030
Why?
Inpatients
1
2019
303
0.030
Why?
Muscle Proteins
1
2017
117
0.030
Why?
Patient Readmission
1
2020
432
0.030
Why?
Education, Medical, Graduate
1
2019
350
0.030
Why?
Reference Values
1
2016
333
0.030
Why?
Kidney
1
2018
455
0.030
Why?
Tertiary Care Centers
1
2016
108
0.030
Why?
Sequence Analysis, RNA
1
2017
180
0.030
Why?
Chronic Disease
1
2019
756
0.030
Why?
Cardiovascular Agents
1
2016
104
0.030
Why?
Cells, Cultured
1
2019
2177
0.030
Why?
Area Under Curve
1
2015
149
0.030
Why?
Drug Resistance
1
2015
155
0.030
Why?
Biomarkers
1
2018
1431
0.020
Why?
Home Care Services
1
2013
98
0.020
Why?
Phenotype
1
2016
1222
0.020
Why?
Carrier Proteins
1
2017
709
0.020
Why?
Counterpulsation
1
2012
2
0.020
Why?
Disease-Free Survival
1
2012
249
0.020
Why?
Internship and Residency
1
2019
808
0.020
Why?
Neoplasm Metastasis
1
2012
210
0.020
Why?
Pilot Projects
1
2015
1020
0.020
Why?
Scoliosis
1
2011
10
0.020
Why?
Tinnitus
1
2011
19
0.020
Why?
Alopecia
1
2011
27
0.020
Why?
Dipyridamole
1
2010
17
0.020
Why?
Elective Surgical Procedures
1
2011
119
0.020
Why?
Databases as Topic
1
2010
51
0.020
Why?
Neoplasm Staging
1
2012
529
0.020
Why?
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha
1
2010
34
0.020
Why?
Thrombocytopenia
1
2010
56
0.020
Why?
Whole Blood Coagulation Time
1
2009
3
0.020
Why?
Secondary Prevention
1
2010
164
0.020
Why?
Heat-Shock Proteins
1
2010
68
0.020
Why?
Linear Models
1
2010
408
0.020
Why?
Aspirin
1
2010
172
0.020
Why?
Treatment Failure
1
2009
201
0.020
Why?
Down-Regulation
1
2010
319
0.020
Why?
Surgical Instruments
1
2008
43
0.020
Why?
Case-Control Studies
1
2012
1131
0.020
Why?
Mediastinum
1
2008
29
0.020
Why?
Dissection
1
2008
48
0.020
Why?
Diastole
1
2008
91
0.020
Why?
Walking
1
2010
240
0.020
Why?
Myocardial Revascularization
1
2008
76
0.020
Why?
Dose-Response Relationship, Drug
1
2009
869
0.020
Why?
Probability
1
2008
169
0.020
Why?
Coronary Stenosis
1
2008
41
0.020
Why?
Neoplasms
1
2018
1392
0.020
Why?
Animals
2
2016
20962
0.020
Why?
Signal Transduction
1
2017
3070
0.020
Why?
Coronary Artery Bypass, Off-Pump
1
2005
5
0.010
Why?
Confidence Intervals
1
2006
239
0.010
Why?
Algorithms
1
2010
1029
0.010
Why?
Myocardial Infarction
1
2012
915
0.010
Why?
Angiography
1
2005
151
0.010
Why?
Anastomosis, Surgical
1
2005
117
0.010
Why?
Regression Analysis
1
2006
498
0.010
Why?
Reproducibility of Results
1
2009
1683
0.010
Why?
Sensitivity and Specificity
1
2008
1164
0.010
Why?
Mice
1
2016
11003
0.010
Why?
Transcription Factors
1
2010
1540
0.010
Why?
Tracheal Stenosis
1
1998
9
0.010
Why?
Bronchoscopy
1
1998
90
0.010
Why?
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