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Hospital / health system · Sofia · Bulgaria

Queen Giovanna Hospital

In research, Queen Giovanna Hospital stands highest in Medicine (#8,715 of 10,443 worldwide) and Health Sciences (#10,527 of 11,982 worldwide), 2022–2025.

isul.euROR OpenAlex
World rank, 2022–2025
#22,989
of 28,054 · #32,499 all time
Rank in Bulgaria
#72
of 92
Research works
418
▲ 81% vs 2013–17
Citations
2.3k
5.4 per fractional work
Top-10% rate
4.2%
record average 16.5%
Open access
61%
world 28%

What is Queen Giovanna Hospital known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
MedicineField #8,715 of 10,443 4.3%91 #13361
Health SciencesDomain #10,527 of 11,982 4.3%94 #16468

Each strip is that field’s whole ranked pool, with the notch where Queen Giovanna 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 world mark, because the world rate differs by field (from about 6% to 21% in this record).

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: 0.04× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.88× its world share, 11 worksBiochemistry, Geneti…Immunology and Microbiology: 1.87× its world share, 2 worksImmunology and Micro…Neuroscience: 0.76× its world share, 1 worksNeuroscienceChemistry: 0.16× its world share, 0 worksChemistryComputer Science: 0.09× its world share, 1 worksComputer ScienceEngineering: 0.09× its world share, 2 worksEngineeringEnvironmental Science: 0.02× its world share, 0 worksEnvironmental ScienceMaterials Science: 0.09× its world share, 0 worksMaterials ScienceMathematics: 0.11× its world share, 0 worksMathematicsDentistry: 1.17× its world share, 1 worksDentistryHealth Professions: 0.69× its world share, 2 worksHealth ProfessionsMedicine: 4.15× its world share, 91 worksMedicineNursing: 0.15× its world share, 0 worksNursingVeterinary: 0.79× its world share, 0 worksVeterinaryBusiness, Management and Accounting: 0.02× its world share, 0 worksBusiness, Management…Economics, Econometrics and Finance: 0.46× its world share, 1 worksEconomics, Econometr…Psychology: 0.13× its world share, 0 worksPsychology1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Medicine, 4.2×. Every wedge is a field page.

Who are the top researchers at Queen Giovanna Hospital?

Ranked on the composite score, Assen Goudev, Николай Валентинович Романовский and Elena Kinova lead among researchers whose main affiliation is Queen Giovanna Hospital.

  1. 1 Assen Goudev Bulgaria · #201,107 worldwide 136 citations · 30 works
  2. 2 Николай Валентинович Романовский Bulgaria · #588,991 worldwide 0 citations · 34 works
  3. 3 Elena Kinova Bulgaria · #1,221,481 worldwide 22 citations · 18 works
  4. 4 Tsanislava Genova Bulgaria · #1,323,255 worldwide 16 citations · 15 works
  5. 5 N Penkov Bulgaria · #1,385,381 worldwide 5 citations · 25 works
  6. 6 Borislav Vladimirov Bulgaria · #1,473,135 worldwide 2 citations · 38 works
  7. 7 K. Petkov Bulgaria · #1,601,827 worldwide 1 citations · 18 works
All ranked researchers at Queen Giovanna Hospital

Which keywords describe research at Queen Giovanna Hospital?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Epidemiology, Cardiovascular Disease, Hypertension, Insulin Resistance, Genetic Mutations, Complications, Radiotherapy and Atrial Fibrillation.

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

Size is fractional works in 2022–2025 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. Epidemiology19▲ 4.2×49 topics
  2. Cardiovascular Disease8▲ 6.6×14 topics
  3. Hypertension7▲ 21×5 topics
  4. Insulin Resistance6▲ 13×8 topics
  5. Genetic Mutations6▲ 12×11 topics
  6. Complications6▲ 10×11 topics
  7. Treatment5▲ 3.8×17 topics
  8. Inflammation5▲ 2.1×29 topics
  9. Diagnosis5▲ 4.7×18 topics
  10. Radiotherapy5▲ 11×8 topics
  11. Atrial Fibrillation5▲ 44×2 topics
  12. Chemotherapy5▲ 6.1×11 topics
  13. Mortality5▲ 7.5×4 topics
  14. Obesity5▲ 5.3×7 topics
  15. Obstructive Sleep Apnea5▲ 88×1 topic
  16. Sleep-Disordered Breathing5▲ 88×1 topic
  17. Guidelines4▲ 8.1×10 topics
  18. Surgical Management4▲ 9.3×13 topics
  19. Heart Failure4▲ 8.2×8 topics
  20. Catheter Ablation3▲ 24×2 topics
  21. Clinical Practice Guidelines3▲ 5.5×8 topics
  22. Survival Analysis3▲ 11×5 topics
  23. Cardiac Imaging3▲ 23×2 topics
  24. Cardiovascular Risk3▲ 8.6×3 topics
  25. Echocardiography3▲ 9.7×4 topics
  26. Coronary Artery Disease3▲ 21×2 topics
  27. Sudden Death3▲ 55×2 topics
  28. Mechanical Ventilation3▲ 20×2 topics
  29. Neoadjuvant Therapy3▲ 9.6×4 topics
  30. Prognosis3▲ 7.1×4 topics
  31. Arrhythmogenic Right Ventricular Cardiomyopathy2▲ 81×1 topic
  32. Athletes2▲ 81×1 topic
  33. Cardiac Remodeling2▲ 50×2 topics
  34. Stroke Prevention2▲ 18×2 topics
  35. Anticoagulant Therapy2▲ 17×2 topics
  36. Chamber Quantification2▲ 27×1 topic
  37. Diastolic Function2▲ 27×1 topic
  38. Palliative Treatment2▲ 32×2 topics
  39. Risk Stratification2▲ 30×1 topic
  40. Thromboembolism2▲ 30×1 topic

Which research topics does Queen Giovanna Hospital publish most on?

By volume in 2022–2025: Obstructive Sleep Apnea Research, Cardiovascular Effects of Exercise, Atrial Fibrillation Management and Outcomes and Cardiovascular Function and Risk Factors.

Obstructive Sleep Apnea …5Obstructive Sleep Apnea Research: 5 fractional worksCardiovascular Effects o…2Cardiovascular Effects of Exercise: 2 fractional worksAtrial Fibrillation Mana…2Atrial Fibrillation Management and Outcomes: 2 fractional worksCardiovascular Function …2Cardiovascular Function and Risk Factors: 2 fractional worksTracheal and airway disorders: 2 fractional worksEsophageal and GI Pathology: 2 fractional worksOrthopedic Surgery and R…2Orthopedic Surgery and Rehabilitation: 2 fractional worksCardiac Imaging and Diagnostics: 2 fractional worksHead and Neck Cancer Studies: 2 fractional worksHemophilia Treatment and…2Hemophilia Treatment and Research: 2 fractional works
PhysiologyCardiology and Cardiovascular MedicinePulmonary and Respiratory MedicineSurgery3 others

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

  1. 1 Obstructive Sleep Apnea Research Physiology 5 works
  2. 2 Cardiovascular Effects of Exercise Cardiology and Cardiovascular Medicine 2 works
  3. 3 Atrial Fibrillation Management and Outcomes Cardiology and Cardiovascular Medicine 2 works
  4. 4 Cardiovascular Function and Risk Factors Cardiology and Cardiovascular Medicine 2 works
  5. 5 Tracheal and airway disorders Pulmonary and Respiratory Medicine 2 works
  6. 6 Esophageal and GI Pathology Surgery 2 works
  7. 7 Orthopedic Surgery and Rehabilitation Surgery 2 works
  8. 8 Cardiac Imaging and Diagnostics Radiology, Nuclear Medicine and Imaging 2 works
  9. 9 Head and Neck Cancer Studies Otorhinolaryngology 2 works
  10. 10 Hemophilia Treatment and Research Hematology 2 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 available61.1%not open38.9%

World: 28% of research is openly available.

with international co-authors13.7%domestic only86.3%

World: 19% is written across borders.

How has Queen Giovanna Hospital's research output changed?

Output in 2018–2022 was 81% higher than in 2013–2017.

20002005201020152020
grewheldshrank

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

Other research institutions in Sofia

All research institutions in Sofia

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.