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Orestis Ioannidis

Researcher at Aristotle University of Thessaloniki

Publications -  149
Citations -  2243

Orestis Ioannidis is an academic researcher from Aristotle University of Thessaloniki. The author has contributed to research in topics: Medicine & Internal medicine. The author has an hindex of 20, co-authored 119 publications receiving 1620 citations. Previous affiliations of Orestis Ioannidis include Democritus University of Thrace.

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Global patient outcomes after elective surgery: Prospective cohort study in 27 low-, middle- and high-income countries

T. Ahmad, +2519 more
TL;DR: Despite lower baseline risk, outcomes were similar in low- and middle-income compared with high-income countries and should also address the need for safe perioperative care.
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Prospective Observational Study on acute Appendicitis Worldwide (POSAW).

Massimo Sartelli, +147 more
TL;DR: The results of the present study confirm the clinical value of imaging techniques and prognostic scores and confirm that appendectomy remains the most effective treatment of acute appendicitis.
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Global validation of the WSES Sepsis Severity Score for patients with complicated intra-abdominal infections: a prospective multicentre study (WISS Study)

Massimo Sartelli, +142 more
TL;DR: WSES Sepsis Severity Score for patients with complicated Intra-abdominal infections can be used on global level and has shown high sensitivity, specificity, and likelihood ratio that may help in making clinical decisions.
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Complicated intra-abdominal infections in Europe: a comprehensive review of the CIAO study

Massimo Sartelli, +79 more
TL;DR: The CIAO Study gives an accurate description of the epidemiological, clinical, microbiological, and treatment profiles of complicated intra-abdominal infections (IAIs) throughout Europe.
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Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries

Stephen R Knight, +2713 more
- 30 Jan 2021 - 
TL;DR: In this paper, the authors compared postoperative outcomes in breast, colorectal, and gastric cancer surgery in hospitals worldwide, focusing on the effect of disease stage and complications on postoperative mortality.