Usefulness of a continuous suction mouthpiece during percutaneous endoscopic gastrostomy: a single-center, prospective, randomized study

Recent approach for preventing complications in upper gastrointestinal endoscopic submucosal dissection

Although endoscopic submucosal dissection (ESD) is a minimally invasive treatment method for upper gastrointestinal (GI) tumors, patients undergoing upper GI ESD sometimes fall into a serious condition from complications. Thus, it is important to fully understand how to prevent complications when performing upper GI ESD. One of the major complications in esophageal and gastric ESD is intraoperative perforation. To prevent this complication, blind dissection should be avoided. Traction-assisted ESD is a useful technique for maintaining good endoscopic view. This method was proven to reduce the incidence of intraoperative perforation, which would become a standard technique in esophageal and gastric ESD. In gastric ESD, delayed bleeding is the most common complication. Recently, a novel prediction model (BEST-J score) consisting of 10 factors with four risk categories for delayed bleeding in gastric ESD was established, and a free mobile application is now available. For reducing delayed bleeding in gastric ESD, vonoprazan ≥20 mg/day is the sole reliable method in the current status. Duodenal ESD is still challenging with a much higher frequency of complications, such as perforation and delayed bleeding, than ESD in other organs. However, with the development of improved devices and techniques, the frequency of complications in duodenal ESD has been decreasing. To prevent intraoperative perforation, some ESD techniques, such as using the distal tips of the Clutch Cutter, were developed. An endoscopic mucosal defect closure technique would be mandatory for preventing delayed complications. However, several unresolved issues, including standardization of duodenal ESD, remain and further studies are demanded.

Novel mouthpiece for reducing the gag reflex during esophagogastroduodenoscopy

BACKGROUND AND AIM

Discomfort associated with the gag reflex during transoral endoscopy can be troublesome. To overcome this problem during esophagogastroduodenoscopy (EGD), we recently developed a novel mouthpiece. The aim of the present study was to compare acceptance and tolerability of transoral EGD with conventional and new mouthpieces in unsedated patients and analyze the effects of the new mouthpiece.

METHODS

This study consisted of two phases of cephalometric and EGD examinations to analyze the effects of the new mouthpiece. Cephalometry was carried out in six subjects to evaluate differences in the size of the pharynx (anteroposterior diameter of the oropharynx and longitudinal diameter of the oral cavity) when subjects held the conventional mouthpiece (MAJ674) or the new mouthpiece in their mouths. EGD was done in 10 subjects using the conventional or new mouthpiece to evaluate the number of times the gag reflex occurred, examinee discomfort, and endoscope operability during EGD using a visual analogue scale (VAS).

RESULTS

Anteroposterior diameter of the oropharynx and longitudinal diameter of the oral cavity were significantly larger with the new mouthpiece than with the conventional mouthpiece (oropharynx: P = 0.03; oral cavity: P = 0.03). With the new mouthpiece during EGD, subjects had significantly fewer instances of the gag reflex (P = 0.01); VAS score for discomfort was significantly lower (P < 0.01) and score for endoscope operability was significantly higher (P = 0.04).

CONCLUSION

The new mouthpiece we developed reduced the gag reflex during EGD by extending the pharynx, thus decreasing examinee discomfort and increasing endoscopic operability.

Unsedated Outpatient Percutaneous Endoscopic Gastrostomy in Stroke Patients: Is It Feasible and Safe?

Percutaneous endoscopic gastrostomy (PEG) is an established practice for long-term nutrition in dysphagia-suffering stroke patients. This study sought to determine the feasibility and safety of outpatient, unsedated PEG implementation in stroke patients. This retrospective cohort study involved stroke victims who underwent unsedated outpatient PEG insertion from 2014 to 2017 at our Surgical Endoscopy Unit. Patients were given pharyngeal anesthesia with lidocaine 10% spray, while the PEG tube was placed under local anesthesia. The incidence of intraprocedural and postprocedural complications and 30-day mortality rate were recorded. Data from 127 cases were analyzed. The procedures were performed with minor, transient complications, which resolved after rescue maneuvers. No intraprocedural and postprocedural major complications or death were observed. During the 30-day follow-up, the most important complication involved a single case of accidental PEG removal that was successfully resolved surgically. Unsedated PEG insertion appears to be a feasible, well-tolerated, and safe option for stroke-related dysphagia.

Risk Factors for Aspiration Pneumonia After Endoscopic Hemostasis

BACKGROUND

Although all types of endoscopic procedures harbor risk of aspiration, little is understood about risk factors for aspiration pneumonia developing after endoscopic hemostasis.

AIMS

The present study aimed to identify risk factors for aspiration pneumonia after endoscopic hemostasis.

METHODS

Charts from consecutive patients with upper gastrointestinal bleeding that had been treated by endoscopic hemostasis at a single center between January 2004 and January 2015 were retrospectively reviewed. Patient information and clinical characteristics including cause of hemorrhage, established prognostic scales, laboratory data, comorbidities, medications, duration of endoscopic hemostasis, vital signs, sedative use, and the main operator during the procedure were compared between patients who developed aspiration pneumonia and those who did not.

RESULTS

Aspiration pneumonia developed in 24 (4.8%) of 504 patients after endoscopic hemostasis. Endotracheal intubation was required for three of them, and one died of the complication. Multivariate analysis revealed that age >75 years (odds ratio (OR) 4.4; 95% confidence interval (CI) 1.5-13.6; p = 0.0073), procedural duration >30 min (OR 5.6; 95% CI 1.9-18.2; p = 0.0023), hemodialysis (OR 3.6; 95% CI 1.2-11; p = 0.024), and a history of stroke (OR 3.8; 95% CI 1-14; p = 0.041) were independent risk factors for developing aspiration pneumonia.

CONCLUSIONS

Specific risk factors for aspiration pneumonia after endoscopic hemostasis were identified. Endoscopists should carefully consider aspiration pneumonia when managing older patients who are on hemodialysis, have a history of stroke, and undergo a longer procedure.

Usefulness of continuous suction mouthpiece during esophagogastroduodenoscopy: A single-center, prospective, randomized study

AIM: To develop a new continuous suction mouthpiece (CSM) and evaluate its usefulness for screening esophagogastroduodenoscopy (EGD).

METHODS: A total of 196 patients who were scheduled to undergo screening EGD were assigned to one of two groups: a group using the CSM and a group using a conventional mouthpiece. Extent of salivary flow, frequency of saliva suction, number of choking episodes during the examination, and incidence of aspiration pneumonia after the examination were evaluated and compared between the two groups. Adverse events during and after EGD were also examined. In addition, the oral cavity was meticulously examined after the EGD.

RESULTS: The same number of patients was randomly allocated to each group. There were no significant differences between the two groups in sex, age, biopsy procedure, duration of procedure and depth of sedation. Aspiration pneumonia and other significant adverse events were not observed in either group. The grade of extent of salivary flow was significantly lower in patients with the CSM than in patients with the conventional mouthpiece (P < 0.001). Although there was no significant difference, less frequent suctioning and fewer choking episodes were observed in patients with the CSM than in patients with the conventional mouthpiece (P = 0.082 and P = 0.084, respectively). In addition, there were no patients in the CSM group who required saliva suctioning during the procedure.

CONCLUSION: Use of the CSM during screening EGD can reduce the extent of salivary flow. The device is expected to reduce complications and contamination with saliva.