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The Value of End-tidal Capnography in Gastrointestinal Bleeding

Assessment of End-Tidal CO2 Levels in Patients Presenting to the Emergency Department With Gastrointestinal Bleeding

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06345456
Enrollment
103
Registered
2024-04-03
Start date
2020-06-01
Completion date
2021-01-01
Last updated
2024-04-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Gastro Intestinal Bleeding

Brief summary

Gastrointestinal bleeding is a condition that frequently presents to emergency departments and can be fatal if diagnosis and treatment are delayed. The working mechanism of end tidal capnography is simply to detect the respiratory carbon dioxide level. In our study, the investigators aimed to determine the severity of gastrointestinal bleeding by using the Glaskow Blachford Score and AIMS65 score in cases presenting with gastrointestinal bleeding, to determine the end tidal carbon dioxide value by capnography in these cases and to determine its effectiveness in evaluating mortality and morbidity in gastrointestinal bleeding.

Detailed description

Gastrointestinal (GI) bleeding is a condition that frequently presents to emergency departments and has a mortal course in case of delayed diagnosis and treatment. Upper GI bleeding accounts for 5% of emergency department admissions. Mortality rates vary between 2% and 15%. Mostly, GI bleeding stops spontaneously and does not require endoscopic intervention, blood transfusion or surgery. However, among patients with life-threatening bleeding, timely intervention is very important. For this purpose, there are widely used and validated risk stratification tools such as the Glasgow Blatchford Score (GBS) and the AIMS65 score. Capnography involves the noninvasive measurement of CO2 partial pressure during the respiratory cycle. It provides information on ventilation (efficiency of carbon dioxide elimination), perfusion (vascular CO2 transport) and metabolism (CO2 production through cellular metabolism). The principle of end-tidal capnography (ETCO2) is to detect the level of carbon dioxide in the expiratory breath.ETCO2 waveform changes provide information to physicians in various situations such as assessment of disease severity, cardiac arrest (quality of compression, return of spontaneous circulation, endotracheal tube placement, prognosis) procedural sedation and prediction of critical illness. In our study, the investigators aimed to determine the relationship of ETCO2 value with GBS and AIMS65 scores and its effectiveness on the evaluation of morbidity and mortality in patients admitted to the emergency department with GI bleeding.

Interventions

DEVICEEnd-tidal capnography

The value of end-tidal capnography

Sponsors

Izmir Katip Celebi University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients presenting to the emergency department with symptoms and signs of gastrointestinal bleeding (hematochezia, melena, hematemesis). * Patients with a presumptive diagnosis of gastrointestinal bleeding confirmed by endoscopy and colonoscopy. * Patients who consent to participate in the study. * Patients aged 18 and older.

Exclusion criteria

* Patients without symptoms and signs of gastrointestinal bleeding. * Patients with a presumptive diagnosis of gastrointestinal bleeding ruled out by endoscopy and colonoscopy. * Patients with respiratory pathologies that increase CO2 levels (such as asthma, COPD, pneumonia, etc.). * Patients referred from external centers and underwent ERT replacement. * Patients with heart failure. * Patients who refuse to participate in the study.

Design outcomes

Primary

MeasureTime frameDescription
The correlation between ETCO2 value and mortality in patients with gastrointestinal bleeding will be investigated.six monthsThe correlation between ETCO2 value and mortality in patients with gastrointestinal bleeding will be investigated.

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026