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Topic · Gastroenterology

Gastrointestinal Bleeding Diagnosis and Treatment

Gastrointestinal Bleeding Diagnosis and Treatment is a research topic within Gastroenterology. Science Explorer counts 18k research works in it since 1950. 10.3% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the diagnosis and management of gastrointestinal bleeding, with an emphasis on techniques such as capsule endoscopy and double-balloon enteroscopy. It covers topics such as the diagnostic yield of different modalities, risk scoring for predicting need for treatment, outcomes after endoscopic therapy, and the role of endoscopy in acute upper and lower gastrointestinal bleeding. The cluster also addresses specific conditions like peptic ulcers, obscure gastrointestinal bleeding, and angiodysplasia.

  • Capsule Endoscopy
  • Upper Gastrointestinal Bleeding
  • Double-Balloon Enteroscopy
  • Small Bowel Disease
  • Peptic Ulcer
  • Diagnostic Yield
  • Obscure Gastrointestinal Bleeding
  • Therapeutic Endoscopy
  • Mortality Prediction
  • Angiodysplasia
Research works
18k
fractional, since 1950
In the world top 10%
1.8k
per year above
Top-10% rate
10.3%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+17%
the tick is no change
Largest producer
United States
27% of the 10 largest, 2022-now
Gastrointestinal Bleeding Diagnosis and Treatment

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

Which countries lead Gastrointestinal Bleeding Diagnosis and Treatment research?

By volume, the United States and China publish the most (749 and 694 works in 2022-now).

By volume, 2022-now

  1. 1 United States 749 works
  2. 2 China 694 works
  3. 3 Japan 302 works
  4. 4 United Kingdom 245 works
  5. 5 India 235 works
  6. 6 South Korea 145 works
  7. 7 Italy 138 works
  8. 8 Spain 109 works
  9. 9 Germany 104 works
  10. 10 Türkiye 92 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 26.6%China: 24.7%Japan: 10.7%United Kingdom: 8.7%6 others listed: 29.3%27%largest
United States749 · 26.6%China694 · 24.7%Japan302 · 10.7%United Kingdom245 · 8.7%6 others listed823 · 29.3%

Shares of the rows listed above, not of the whole node.

Which institutions lead Gastrointestinal Bleeding Diagnosis and Treatment research?

By volume in 2022-now, Sun Yat-sen University publishes the most Gastrointestinal Bleeding Diagnosis and Treatment research, followed by Mayo Clinic and Harvard University.

By volume, 2022-now

  1. 1 Sun Yat-sen UniversityChina 28 works
  2. 2 Mayo ClinicUnited States 27 works
  3. 3 Harvard UniversityUnited States 25 works
  4. 4 Shanghai Jiao Tong UniversityChina 19 works
  5. 5 Sichuan UniversityChina 18 works
  6. 6 University of Southern DenmarkDenmark 18 works
  7. 7 Chinese University of Hong KongChina 18 works
  8. 8 Zhejiang UniversityChina 18 works
  9. 9 University College LondonUnited Kingdom 17 works
  10. 10 Tel Aviv UniversityIsrael 16 works

Who are the leading researchers in Gastrointestinal Bleeding Diagnosis and Treatment?

The most-cited researchers publishing on Gastrointestinal Bleeding Diagnosis and Treatment include Jun Wang, Gordon Henry Guyatt and Gregory Y.H. Lip.

  1. 1 Jun Wang China 340k citations
  2. 2 Gordon Henry Guyatt Canada 315k citations
  3. 3 Gregory Y.H. Lip United Kingdom 311k citations
  4. 4 Róbert Langer United States 303k citations
  5. 5 Peter Christian Gøtzsche Denmark 292k citations
  6. 6 Reza Malekzadeh Iran 278k citations
  7. 7 Patrick M. Bossuyt Netherlands 270k citations
  8. 8 Jean‐Louis Vincent Belgium 262k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Gastrointestinal Bleeding Diagnosis and Treatment?

The most cited paper in Gastrointestinal Bleeding Diagnosis and Treatment is "Efficacy and Safety of Imatinib Mesylate in Advanced Gastrointestinal Stromal Tumors" (George D. Demetri et al., 2002), with 4,425 citations. Next come "Wireless capsule endoscopy" (3,074) and "Efficacy and safety of sunitinib in patients with advanced gastrointestinal stromal tumour after failure of imatinib: a randomised controlled trial" (2,626).

Most cited papers
#PaperReleasedCitations
1 Efficacy and Safety of Imatinib Mesylate in Advanced Gastrointestinal Stromal Tumors George D. Demetri et al. · New England Journal of Medicine Open access 15 Aug 2002 4,425
2 Wireless capsule endoscopy Gavriel J. Iddan, Gavriel Meron, Arkady Glukhovsky et al. · Nature 25 May 2000 3,074
3 Efficacy and safety of sunitinib in patients with advanced gastrointestinal stromal tumour after failure of imatinib: a randomised controlled trial George D. Demetri, Allan T. van Oosterom, Christopher R. Garrett et al. · The Lancet Oct 2006 2,626
4 Development and validation of a new, simplified endoscopic activity score for Crohn's disease: the SES-CD Marco Daperno, Geert D’Haens, Gert Van Assche et al. · Gastrointestinal Endoscopy Oct 2004 1,804
5 Transfusion Strategies for Acute Upper Gastrointestinal Bleeding Càndid Villanueva, Alan Colomo, Alba Fernández Bosch et al. · New England Journal of Medicine Open access 2 Jan 2013 1,748
All 100 most cited papers, with filters and sorting

Where is Gastrointestinal Bleeding Diagnosis and Treatment research done?

The largest centres of Gastrointestinal Bleeding Diagnosis and Treatment research in 2022-now are Beijing (China), Tokyo (Japan), London (United Kingdom) and Seoul (South Korea). Among places with at least 20 works in it, it is an unusually large share of all research in Sheffield and Porto.

Largest cities, 2022-now

  1. 1 BeijingChina 80 works
  2. 2 TokyoJapan 78 works
  3. 3 LondonUnited Kingdom 65 works
  4. 4 SeoulSouth Korea 63 works
  5. 5 ShanghaiChina 54 works
  6. 6 GuangzhouChina 46 works
  7. 7 New YorkUnited States 42 works
  8. 8 ChengduChina 33 works
  9. 9 WuhanChina 33 works
  10. 10 PortoPortugal 33 works

Where it is the local speciality

  1. SheffieldGB · 23.8 works8.7×
  2. PortoPT · 32.9 works7.3×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Gastrointestinal Bleeding Diagnosis and Treatment than the world average.

See Gastrointestinal Bleeding Diagnosis and Treatment on the map

Where is the best place to study Gastrointestinal Bleeding Diagnosis and Treatment?

Among universities, judged by research, University of Southern Denmark, Chinese University of Hong Kong and Tel Aviv University score highest, combining citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%10%20%30%mean 16.99%fractional works in this field (log) →share of work in the world top 10% →New York UniversityUniversity of Southe…Chinese University o…Tel Aviv University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1University of Southern DenmarkDenmark 86.522.6%13.2×18 +48.5%
2Chinese University of Hong KongChina 82.118.0%7.1×18 +7.8%
3Tel Aviv UniversityIsrael 71.616.5%6.0×16 +68.0%
4New York UniversityUnited States 69.526.7%3.3×13 +79.8%
5Harvard UniversityUnited States 67.312.5%2.2×25 -22.7%
6Universidade do PortoPortugal 65.415.7%6.1×14 +120.7%
7Sun Yat-sen UniversityChina 63.910.0%3.9×28 +120.9%
8University College LondonUnited Kingdom 62.511.2%3.0×17 +25.9%
9Imperial College LondonUnited Kingdom 60.122.3%2.8×10 +36.3%
10Humanitas UniversityItaly 58.214.4%19.0×10 +125.0%

Universities only. The score blends citation excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Gastrointestinal Bleeding Diagnosis and Treatment, country by country

Is Gastrointestinal Bleeding Diagnosis and Treatment research growing?

Output in 2022-2025 was 17% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Gastrointestinal Bleeding Diagnosis and Treatment.

still counting19801990200020102020
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 Gastrointestinal Bleeding Diagnosis and Treatment as a percentage of every work published that year, 0.016% in 2024.

still counting0.010%0.020%Gastrointestinal Bleeding Diagnosis and Treatment0.016% in 202519801990200020102020

Fractional works of Gastrointestinal Bleeding Diagnosis and Treatment 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.

still counting5%10%15%Gastrointestinal Bleeding Diagnosis and Treatment10.2% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

Discussion

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