Related Experiment Video
Updated: Aug 11, 2026
05:43
Topical Airway Anesthesia for Awake-endoscopic Intubation Using the Spray-as-you-go Technique with High Oxygen Flow
Published on: January 13, 2017
Arterial oxygen desaturation during esophagogastroduodenoscopy
1Department of Internal Medicine, Sanggye Paik Hospital, College of Medicine, Inje University, Seoul, Korea.
Journal of Korean Medical Science
|June 1, 1992
Summary
Arterial oxygen desaturation occurred in 32.3% of patients during esophagogastroduodenoscopy (EGD), with no identifiable risk factors. Continuous monitoring of oxygen saturation (SaO2) is recommended during EGD procedures.
Area of Science:
- Gastroenterology
- Pulmonology
- Critical Care Medicine
Background:
- Esophagogastroduodenoscopy (EGD) is a common procedure.
- Arterial oxygen desaturation can occur during EGD.
- Identifying risk factors for desaturation is important for patient safety.
Purpose of the Study:
- To evaluate the incidence and severity of arterial oxygen desaturation during EGD.
- To assess clinical factors related to arterial oxygen desaturation.
- To determine the necessity of oxygen supplementation during EGD.
Main Methods:
- Prospective study of 192 patients undergoing elective EGD.
- Continuous recording of arterial oxygen saturation (SaO2).
- Pulmonary function testing prior to EGD.
Main Results:
- 62 patients (32.3%) experienced arterial oxygen desaturation (SaO2 decrease >4%).
- Severe arterial oxygen desaturation (SaO2 ≤85%) occurred in 17 patients (8.9%).
- Desaturation was not linked to age, sex, pulmonary function, smoking, or duration.
Conclusions:
- Continuous SaO2 monitoring is recommended during EGD due to lack of identifiable pre-endoscopic risk factors.
- Desaturation events were transient, lasting less than 2 minutes.
- Oxygen supplementation may not be necessary for all patients during EGD, even those with mild pulmonary impairment.
Related Concept Videos
01:17Assessment of Diffusion and Perfusion
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
01:19Special considerations while measuring oxygen saturation
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
01:23Acute Respiratory Failure-IV
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
01:16Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
01:24Endotracheal Tube Extubation
Endotracheal tube extubation is a critical procedure in weaning patients from mechanical ventilation. It involves physically removing the oral or nasal endotracheal (ET) tube, marking the final step in liberating a patient from ventilatory support.
Procedure
Extubation removes the endotracheal tube (ETT) from the patient on mechanical ventilation. It requires a well-coordinated, multidisciplinary approach involving physicians, nurses, respiratory therapists, and other healthcare professionals.
Procedure
Extubation removes the endotracheal tube (ETT) from the patient on mechanical ventilation. It requires a well-coordinated, multidisciplinary approach involving physicians, nurses, respiratory therapists, and other healthcare professionals.
01:29Endoscopic Procedures I: Esophagogastroduodenoscopy
An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
During an EGD, the endoscope can be used to:
During an EGD, the endoscope can be used to: