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Hospital / health system · Sofia · Bulgaria

Alexandrovska Hospital

In research, Alexandrovska Hospital stands highest in Medicine (#6,317 of 8,541 worldwide) and Health Sciences (#7,875 of 9,902 worldwide), 2022-now. Relative to its size it is most specialised in Surgery (Surgery is 6.3× its share of world research).

alexandrovska.com/display.php?bg/about-usROR OpenAlex
World rank, 2022-now
#20,180
of 22,385 · #32,120 all time
Rank in Bulgaria
#54
of 64
Research works
745
◆ 2% vs 2018-21
Citations
5.4k
7.3 per fractional work
Top-10% rate
4.6%
all institutions 10.0%
vs its own fields
0.87×
1.00× is exactly expected
Open access
56%
world 40%
International
20%
world 18%
Alexandrovska Hospital

What is Alexandrovska Hospital known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
MedicineField #6,317 of 8,541 4.7%115 #12573
Health SciencesDomain #7,875 of 9,902 4.9%119 #15155

Each strip is that field's whole ranked pool, with the notch where Alexandrovska Hospital sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Alexandrovska Hospital work in?

In 2022-now, 81% of research at Alexandrovska Hospital is in Health Sciences, 14% in Life Sciences. Its largest fields are Medicine (78%), Biochemistry, Genetics and Molecular Biology (7%), Immunology and Microbiology (4%). It does 3.3× the world's share of Health Sciences.

Health Sciences: 153 fractional works · 80.5% of its workMedicine: 148 fractional works · 77.8% of its workSurgery: 28 fractional works · 14.7% of its workPulmonary and Respiratory Medicine: 17 fractional works · 9.2% of its workCardiology and Cardiovascular Medicine: 13 fractional works · 6.7% of its workRadiology, Nuclear Medicine and Imaging: 8 fractional works · 4.1% of its workEpidemiology: 8 fractional works · 4.0% of its workNeurology: 7 fractional works · 3.6% of its workPhysiology: 6 fractional works · 3.0% of its workOncology: 6 fractional works · 3.0% of its workInfectious Diseases: 5 fractional works · 2.8% of its workRheumatology: 5 fractional works · 2.7% of its workPathology and Forensic Medicine: 5 fractional works · 2.6% of its workOphthalmology: 5 fractional works · 2.6% of its workHematology: 3 fractional works · 1.7% of its workEndocrinology, Diabetes and Metabolism: 3 fractional works · 1.6% of its workEmergency Medicine: 3 fractional works · 1.5% of its workPublic Health, Environmental and Occupational Health: 2 fractional works · 1.2% of its workPsychiatry and Mental health: 2 fractional works · 1.2% of its workPediatrics, Perinatology and Child Health: 2 fractional works · 1.1% of its workObstetrics and Gynecology: 2 fractional works · 1.0% of its workOtorhinolaryngology: 2 fractional works · 0.9% of its workHepatology: 2 fractional works · 0.8% of its workReproductive Medicine: 2 fractional works · 0.8% of its workTransplantation: 2 fractional works · 0.8% of its workDermatology: 1 fractional works · 0.8% of its workGenetics: 1 fractional works · 0.7% of its workNephrology: 1 fractional works · 0.7% of its workPharmacology: 1 fractional works · 0.6% of its workUrology: 1 fractional works · 0.5% of its workBiochemistry: 1 fractional works · 0.4% of its workCritical Care and Intensive Care Medicine: 1 fractional works · 0.3% of its workGastroenterology: 1 fractional works · 0.3% of its workImmunology and Allergy: 1 fractional works · 0.3% of its workOrthopedics and Sports Medicine: 1 fractional works · 0.3% of its workRehabilitation: 1 fractional works · 0.3% of its workFamily Practice: 0 fractional works · 0.3% of its workHealth Informatics: 0 fractional works · 0.3% of its workHealth Professions: 3 fractional works · 1.7% of its workEmergency Medical Services: 1 fractional works · 0.5% of its workPharmacy: 1 fractional works · 0.4% of its workGeneral Health Professions: 1 fractional works · 0.3% of its workSpeech and Hearing: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workNursing: 1 fractional works · 0.8% of its workNutrition and Dietetics: 1 fractional works · 0.8% of its workDentistry: 0 fractional works · 0.2% of its workPeriodontics: 0 fractional works · 0.2% of its workLife Sciences: 26 fractional works · 13.9% of its workBiochemistry, Genetics and Molecular Biology: 13 fractional works · 6.8% of its workMolecular Biology: 7 fractional works · 3.6% of its workGenetics: 3 fractional works · 1.3% of its workCell Biology: 1 fractional works · 0.6% of its workCancer Research: 1 fractional works · 0.6% of its workClinical Biochemistry: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.5% of its workImmunology and Microbiology: 8 fractional works · 4.4% of its workImmunology: 7 fractional works · 3.7% of its workParasitology: 0 fractional works · 0.3% of its workApplied Microbiology and Biotechnology: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workNeuroscience: 4 fractional works · 2.3% of its workCellular and Molecular Neuroscience: 2 fractional works · 0.9% of its workCognitive Neuroscience: 2 fractional works · 0.8% of its workNeurology: 1 fractional works · 0.4% of its workBiological Psychiatry: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.0% of its workAgricultural and Biological Sciences: 1 fractional works · 0.3% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.2% of its workSocial Sciences: 5 fractional works · 2.8% of its workPsychology: 3 fractional works · 1.4% of its workClinical Psychology: 1 fractional works · 0.7% of its workExperimental and Cognitive Psychology: 1 fractional works · 0.4% of its workSocial Psychology: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workSocial Sciences: 1 fractional works · 0.6% of its workSociology and Political Science: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workArts and Humanities: 1 fractional works · 0.3% of its workEconomics, Econometrics and Finance: 1 fractional works · 0.3% of its workEconomics and Econometrics: 1 fractional works · 0.3% of its workDecision Sciences: 0 fractional works · 0.1% of its workBusiness, Management and Accounting: 0 fractional works · 0.0% of its workPhysical Sciences: 5 fractional works · 2.7% of its workEngineering: 2 fractional works · 1.1% of its workBiomedical Engineering: 1 fractional works · 0.7% of its workElectrical and Electronic Engineering: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workComputer Science: 1 fractional works · 0.4% of its workPhysics and Astronomy: 1 fractional works · 0.4% of its workChemistry: 1 fractional works · 0.3% of its workMaterials Science: 1 fractional works · 0.3% of its workMaterials Chemistry: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.0% of its workEnvironmental Science: 0 fractional works · 0.2% of its workMathematics: 0 fractional works · 0.0% of its workEnergy: 0 fractional works · 0.0% of its workALL ITS WORKAlexandrovskaHospital190fractional works, 2022-now
Life Sciences14%Physical Sciences3%Health Sciences81%Social Sciences3%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 23 fields, with their numbers
    1. Medicine14877.8%
    2. Health Professions31.7%
    3. Nursing10.8%
    4. Dentistry00.2%
    1. Biochemistry, Genetics and Molecular Biology136.8%
    2. Immunology and Microbiology84.4%
    3. Neuroscience42.3%
    4. Agricultural and Biological Sciences10.3%
    5. Pharmacology, Toxicology and Pharmaceutics00.2%
    1. Psychology31.4%
    2. Social Sciences10.6%
    3. Arts and Humanities10.3%
    4. Economics, Econometrics and Finance10.3%
    5. Decision Sciences00.1%
    6. Business, Management and Accounting00.0%
    1. Engineering21.1%
    2. Computer Science10.4%
    3. Physics and Astronomy10.4%
    4. Chemistry10.3%
    5. Materials Science10.3%
    6. Environmental Science00.2%
    7. Mathematics00.0%
    8. Energy00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Alexandrovska Hospital specialise in?

Where its research is concentrated relative to its size: Surgery takes 6.3× the share of its output that it takes of world research.

  1. SurgerySubfield · 27.9 works6.3×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.06× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.27× its world share, 13 worksBiochemistry, Geneti…Immunology and Microbiology: 4.33× its world share, 8 worksImmunology and Micro…Neuroscience: 1.44× its world share, 4 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.50× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.21× its world share, 1 worksChemistryComputer Science: 0.05× its world share, 1 worksComputer ScienceEnergy: 0.03× its world share, 0 worksEnergyEngineering: 0.07× its world share, 2 worksEngineeringEnvironmental Science: 0.04× its world share, 0 worksEnvironmental ScienceMaterials Science: 0.08× its world share, 1 worksMaterials ScienceMathematics: 0.03× its world share, 0 worksMathematicsPhysics and Astronomy: 0.16× its world share, 1 worksPhysics and AstronomyDentistry: 0.42× its world share, 0 worksDentistryHealth Professions: 0.65× its world share, 3 worksHealth ProfessionsMedicine: 4.05× its world share, 148 worksMedicineNursing: 1.59× its world share, 2 worksNursingArts and Humanities: 0.12× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.01× its world share, 0 worksBusiness, Management…Decision Sciences: 0.14× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.14× its world share, 1 worksEconomics, Econometr…Psychology: 0.48× its world share, 3 worksPsychologySocial Sciences: 0.04× its world share, 1 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Immunology and Microbiology, 4.3×. Every wedge is a field page.

All 23 fields, with their numbers
  1. Immunology and Microbiology4.33×8 works
  2. Medicine4.05×148 works
  3. Nursing1.59×2 works
  4. Neuroscience1.44×4 works
  5. Biochemistry, Genetics and Molecular Biology1.27×13 works
  6. Health Professions0.65×3 works
  7. Pharmacology, Toxicology and Pharmaceutics0.50×0 works
  8. Psychology0.48×3 works
  9. Dentistry0.42×0 works
  10. Chemistry0.21×1 works
  11. Physics and Astronomy0.16×1 works
  12. Decision Sciences0.14×0 works
  13. Economics, Econometrics and Finance0.14×1 works
  14. Arts and Humanities0.12×1 works
  15. Materials Science0.08×1 works
  16. Engineering0.07×2 works
  17. Agricultural and Biological Sciences0.06×0 works
  18. Computer Science0.05×1 works
  19. Environmental Science0.04×0 works
  20. Social Sciences0.04×1 works
  21. Energy0.03×0 works
  22. Mathematics0.03×0 works
  23. Business, Management and Accounting0.01×0 works

Who are the top researchers at Alexandrovska Hospital?

Ranked on the quality score, Shima Mehrabian, Latchezar Dintchov Traykov and Violeta Chernodrinska lead among researchers whose main affiliation is Alexandrovska Hospital.

  1. 1 Shima Mehrabian Bulgaria · #799,153 worldwide 1.4k citations · 57 works
  2. 2 Latchezar Dintchov Traykov Bulgaria · #1,316,864 worldwide 5.3k citations · 107 works
  3. 3 Violeta Chernodrinska Bulgaria · #1,914,857 worldwide 765 citations · 23 works
  4. 4 Petar Gribnev Bulgaria · #2,095,300 worldwide 476 citations · 26 works
  5. 5 Manol Bonev Sokolov Bulgaria · #2,174,841 worldwide 1.8k citations · 97 works
  6. 6 Ralitsa Pancheva Bulgaria · #2,430,242 worldwide 3.9k citations · 18 works
  7. 7 G Todorov Bulgaria · #3,449,933 worldwide 425 citations · 22 works
  8. 8 Kiril K. Karamfiloff Bulgaria · #3,453,284 worldwide 5.9k citations · 73 works
  9. 9 Evgueniy A. Hadjiev Bulgaria · #3,651,466 worldwide 427 citations · 33 works
  10. 10 Blagovest Stoimenov Bulgaria · #3,998,165 worldwide 38 citations · 15 works
All ranked researchers at Alexandrovska Hospital

What are the most cited papers from Alexandrovska Hospital?

The most cited paper from Alexandrovska Hospital is "Common polygenic variation contributes to risk of schizophrenia and bipolar disorder" (Shaun Purcell et al., 2009), with 5,082 citations. Next come "Randomised double-blind comparison of placebo and active treatment for older patients with isolated systolic hypertension" (3,012) and "Mapping genomic loci implicates genes and synaptic biology in schizophrenia" (2,894).

Most cited papers
#PaperReleasedCitations
1 Common polygenic variation contributes to risk of schizophrenia and bipolar disorder Shaun Purcell et al. · Nature Open access Jul 2009 5,082
2 Randomised double-blind comparison of placebo and active treatment for older patients with isolated systolic hypertension Jan A. Staessen, Robert H. Fagard, Lutgarde Thijs et al. · The Lancet Sep 1997 3,012
3 Mapping genomic loci implicates genes and synaptic biology in schizophrenia Vassily Vladimirovich Trubetskoy et al. · Nature Open access613 authors 8 Apr 2022 2,894
4 Rare chromosomal deletions and duplications increase risk of schizophrenia Jennifer L. Stone et al. · Nature Open access 30 Jul 2008 1,516
5 Epidemic of carbapenem-resistant Klebsiella pneumoniae in Europe is driven by nosocomial spread Sophia David et al. · Nature Microbiology Open access 29 Jul 2019 849
All 60 most cited papers, with filters and sorting

Which keywords describe research at Alexandrovska Hospital?

By fractional works in 2022-now, weighted toward what it does more of than the world: Epidemiology, Diagnosis, Treatment, Inflammation, Management, Chemotherapy, Genetic Mutations and Cardiovascular Disease.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology25▲ 3.3×73 topics
  2. Inflammation12▲ 2.9×41 topics
  3. Treatment11▲ 4.6×34 topics
  4. Diagnosis10▲ 5.8×29 topics
  5. Cardiovascular Disease9▲ 4.0×25 topics
  6. Management8▲ 5.2×20 topics
  7. Chemotherapy8▲ 5.6×16 topics
  8. Oxidative Stress7▲ 2.4×29 topics
  9. Quality of Life7▲ 2.6×20 topics
  10. Genetic Mutations6▲ 7.7×18 topics
  11. Risk Factors6▲ 3.0×20 topics
  12. Complications6▲ 6.4×12 topics
  13. Guidelines6▲ 6.5×9 topics
  14. Surgical Management5▲ 6.8×16 topics
  15. Immune Response5▲ 4.8×12 topics
  16. Obesity5▲ 3.5×15 topics
  17. Genetics5▲ 3.7×11 topics
  18. Immunotherapy5▲ 3.6×10 topics
  19. ACE2 Receptor5▲ 11×3 topics
  20. Metabolic Syndrome5▲ 3.1×16 topics
  21. Atherosclerosis5▲ 8.4×8 topics
  22. Magnetic Resonance Imaging5▲ 9.5×6 topics
  23. Clinical Practice Guidelines4▲ 4.3×11 topics
  24. Prognosis4▲ 6.9×9 topics
  25. Pathophysiology4▲ 7.8×7 topics
  26. Thrombosis4▲ 7.7×4 topics
  27. Cognitive Impairment4▲ 8.4×6 topics
  28. Radiotherapy4▲ 5.4×9 topics
  29. SARS-CoV-24▲ 7.0×4 topics
  30. Coronary Artery Disease4▲ 18×3 topics
  31. Myocardial Infarction4▲ 8.0×5 topics
  32. Neoadjuvant Therapy4▲ 7.9×5 topics
  33. Surgery4▲ 5.5×5 topics
  34. Survival Analysis4▲ 6.7×6 topics
  35. Cardiac Imaging3▲ 14×3 topics
  36. Children3▲ 7.6×6 topics
  37. Clinical Characteristics3▲ 14×2 topics
  38. Mutation Analysis3▲ 23×2 topics
  39. Inflammatory Diseases3▲ 8.5×3 topics
  40. Pulmonary Infections3▲ 26×2 topics

Which research topics does Alexandrovska Hospital publish most on?

By volume in 2022-now: Cystic Fibrosis Research Advances, COVID-19 Clinical Research Studies, Cardiac Imaging and Diagnostics and Appendicitis Diagnosis and Management.

Cystic Fibrosis Research…3Cystic Fibrosis Research Advances: 3 fractional worksCOVID-19 Clinical Resear…3COVID-19 Clinical Research Studies: 3 fractional worksCardiac Imaging and Diag…2Cardiac Imaging and Diagnostics: 2 fractional worksAppendicitis Diagnosis a…2Appendicitis Diagnosis and Management: 2 fractional worksComplement system in diseases: 2 fractional worksIntracranial Aneurysms: Treatment and Complications: 2 fractional worksCerebrovascular and Caro…2Cerebrovascular and Carotid Artery Diseases: 2 fractional worksCardiovascular Disease and Adiposity: 2 fractional worksCardiac, Anesthesia and Surgical Outcomes: 1 fractional worksCoronary Interventions a…1Coronary Interventions and Diagnostics: 1 fractional works
Pulmonary and Respiratory MedicineInfectious DiseasesRadiology, Nuclear Medicine and ImagingEmergency Medicine4 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Cystic Fibrosis Research Advances Pulmonary and Respiratory Medicine 3 works
  2. 2 COVID-19 Clinical Research Studies Infectious Diseases 3 works
  3. 3 Cardiac Imaging and Diagnostics Radiology, Nuclear Medicine and Imaging 2 works
  4. 4 Appendicitis Diagnosis and Management Emergency Medicine 2 works
  5. 5 Complement system in diseases Immunology 2 works
  6. 6 Intracranial Aneurysms: Treatment and Complications Neurology 2 works
  7. 7 Cerebrovascular and Carotid Artery Diseases Pulmonary and Respiratory Medicine 2 works
  8. 8 Cardiovascular Disease and Adiposity Cardiology and Cardiovascular Medicine 2 works
  9. 9 Cardiac, Anesthesia and Surgical Outcomes Cardiology and Cardiovascular Medicine 1 works
  10. 10 Coronary Interventions and Diagnostics Surgery 1 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available55.5%not open44.5%

World: 40% of research is openly available.

with international co-authors20.5%domestic only79.5%

World: 18% is written across borders.

How has Alexandrovska Hospital's research output changed?

Output in 2022-2025 was 2% lower than in 2018-2021.

still counting200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Alexandrovska Hospital as a percentage of every work published that year, 0.00057% in 2024.

still counting0.00050%0.0010%0.0015%Alexandrovska Hospital0.00062% in 202519801990200020102020

Fractional works of Alexandrovska Hospital over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Alexandrovska Hospital3.8% in 202520102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 11.1% in 2013.

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Alexandrovska Hospital on Science Explorer

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