Clinical trials
Observational Postoperative Complications trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
540 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2004 | 1 |
| 2005 | 2 |
| 2006 | 3 |
| 2007 | 9 |
| 2008 | 5 |
| 2009 | 6 |
| 2010 | 7 |
| 2011 | 15 |
| 2012 | 3 |
| 2013 | 11 |
| 2014 | 17 |
| 2015 | 19 |
| 2016 | 32 |
| 2017 | 25 |
| 2018 | 39 |
| 2019 | 44 |
| 2020 | 35 |
| 2021 | 43 |
| 2022 | 38 |
| 2023 | 46 |
| 2024 | 36 |
| 2025 | 46 |
| 2026 | 55 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 280 |
| Unknown status | 108 |
| Recruiting | 73 |
| Not yet recruiting | 33 |
| Active, not recruiting | 20 |
| Terminated | 10 |
| Withdrawn | 10 |
| Enrolling by invitation | 5 |
| Suspended | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital | 7 |
| Grupo Español de Rehabilitación Multimodal | 6 |
| Ottawa Hospital Research Institute | 6 |
| Seoul National University Hospital | 6 |
| Xijing Hospital | 5 |
| Centre hospitalier de l'Université de Montréal (CHUM) | 4 |
| Medical University of Vienna | 4 |
| National Taiwan University Hospital | 4 |
| Peking University First Hospital | 4 |
| Rigshospitalet, Denmark | 4 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Postoperative Complications | 540 |
| Colorectal Neoplasms | 16 |
| Frailty | 16 |
| Acute Kidney Injury | 15 |
| COVID-19 | 14 |
| Intraoperative Complications | 13 |
| Breast Neoplasms | 12 |
| Postoperative Pain | 12 |
| Delirium | 11 |
| Emergence Delirium | 11 |
Trials
Showing 26 to 50 of 540. Each trial links to its page on Pharma Observatory.
440 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
No changes to these trials in the last 7 days.
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