Gastric Balloon
A gastric balloon is an effective endoscopic method for weight loss. It is indicated for obese patients or individuals with overweight who have already undergone multiple interventions, with minimal success, or who have not been able to undergo bariatric surgery yet. Gastric balloons are significant, as now more than one in ten adults worldwide are obese; a 6-8 percent body weight reduction may decrease the danger of several illness categories, such as hypertension and diabetes, significantly.
There is ambiguity among healthcare experts on the best method to accomplish this fat-reduction objective: a 10 percent weight loss in overweight individuals is often recommended. While nutritional therapy, varying degrees of performance, and multidisciplinary therapy are all successful treatments for obese and overweight individuals, many prefer a minimally invasive therapy that strengthens the need for gastrointestinal endoscopy and thus advances gastroenterologic techniques.
Several types and brands of intragastric balloons are currently in service throughout the world, and the expertise is also among its most developed, with reports from six to ten years of balloon duration. The crux of it all is that intragastric balloon technology and expertise are gaining importance on a global scale. However, it is critical to distinguish between the patients who would benefit from the intervention and those who would have an unacceptable risk of experiencing balloon-related problems.
Patients with less than grade II obesity; class I obesity, patients affected with a BMI between 30 and 35 kg/m². The average EWL percent after 6 months is less than 49%, and an average EWL percent after the insertion of an endoscopic balloon of more than 45% at 3 months correlated with 55.6% of recovery within 1 or 6 months.
Efficacy and Effectiveness of Gastric Balloon Therapy
Observation and close scrutiny of the data have been the cornerstone of any responsible investigative endeavor.
A proper judgment of the gastric balloon treatment’s effectiveness can be made by discerning the weight loss observed in various studies. The skill and experience of each reviewer should not hinder the transparency of judgment. Most bariatric surgeons and gastroenterologists consider 10% EWL after 6 months and 20% EWL after 12 months a standard yardstick as treatment goals. Furthermore, weight loss at 6 and 12 months and the percentage of weight attained are the most common yardsticks employed in most studies as the assessment criteria for the gastric balloon outcome.
Weight lost through gastric balloons varies from 7.3 to 17 kg over a specified duration starting from 6 weeks to one year. The mean net weight reduction was recorded after excluding the balloon’s weight at time zero. At the end of one year, an average of 11.1 to 9.2 kg after the first balloon insertion and 10.6 to 10.1 kg after 6 months was recorded following the second balloon insertion.
The net average percent weight lost at the 12th month was recorded between 9.4 to 7.3 kg, corresponding with 10.3 to 7.8% (range 7–12 months). The highest recorded weight loss was at the end of the 6th month, averaging 14 kg. Those achieving weight loss greater than 15% and 20% are also notable, as this marked percentage improvement will have an immense impact on a patient’s quality of life. The percentage of total body weight lost by the time the balloon is extracted at 6 months is 6 to 14%. The net total body weight percentage for the two balloon insertions is in the approximate range of 13 to 14%. The skill and attitude of a patient, support received, attendant psychological symptoms, co-morbidities, and a comprehensive approach towards lifestyle adjustment are contributors to effective and efficient gastric balloon therapy. The use of an algorithm in the selection of candidates for the treatment is recommended.
Safety and Complications of Gastric Balloon Insertion
Currently available double-blind randomized control studies and meta-analyses have demonstrated that intragastric balloons are generally safe and well tolerated, with the majority of adverse events being mild to moderate and predominantly occurring during the first week after insertion. The most common side effects are nausea, vomiting, and abdominal pain.
Inflating the balloons with less volume and improving the quality of sedation or analgesia shows promising benefits in reducing the existing side effects. As for severe adverse events, the most feared, although very rare, are gastric perforation with the potential for peritonitis, sepsis, or death, and balloon rupture, which can be life-threatening by triggering mediastinal spread of saline and causing hemodynamic decompensation in the case of high balloon volume. Used without the necessary precautions, intragastric balloons may have a significant potential to cause serious complications.
As for symptoms or serious complications, a comprehensive evaluation of patients in whom an intragastric balloon is planned is suggested. It should include taking a detailed history to identify possible gastroenterological pathologies or regular intake of ulcerogenic drugs and a personalized physical examination to identify typical signs, in particular, signs of bile acid malabsorption as potentially dangerous situations for acute procedural toxic ileitis, mainly during the deflating process. Important is also the evaluation of coagulation parameters, even if mild alterations do not pose a contraindication to the procedure, as only one study showed a significant association between alterations of coagulation parameters and early intragastric balloon-related endoscopic removal due to intolerance.
Good sedation and analgosedation, as well as synergy among the endoscopist and the anesthesiologist, are crucial to limit patients’ perception of pain and anxiety, and keeping them well is mandatory for an easier insertion and a lower risk of immediate removal due to the onset of generalized abdominal pain or upper-digestive bleeding. Treatment for agitation or anxiety related to balloon insertion, which is mainly based on verbal reassurance and intravenous use of anesthetics or sedative-hypnotics, is strongly recommended. In general, relief of adverse symptoms is typically within the first day, and if possible, patients should complete an antiproton pump inhibition along with an antiemetic and a prokinetic.
In case of gastric retention, if the balloon does not pass naturally, fifteen minutes of endoscopic repositioning in the stomach is suggested to help facilitate this process. After the procedure, precise indications aimed at facilitating the display of eventual adverse symptoms or complications are fundamental, including the use of a specific card indicating whom to seek for healthcare provision. In case of emergency before the possibly necessary exams, a contrast-enhanced CT scan should be performed to rule out gastric wall damage. After balloon placement, short-term clinical follow-up visits are necessary, whereas for durable and long-term quality of life, the surgical, endoscopic, and follow-up care should be expanded.
Future Directions and Emerging Technologies in Gastric Balloon Therapy
Several new gastric balloon designs and materials are a significant advance to optimize patient comfort with a lower adverse event rate that are matched to the physiology of gastric filling. Among these is the Elipse balloon used in the present study. Future directions and emerging technologies in gastric balloon therapy for obesity also include the use of adjustable balloons, which have been developed to assess the role of patient tolerance and outcomes when the size of the balloon is systematically adjusted after placement. Other applications include conceptually intriguing smart balloons, i.e., nonsystematic balloons that help to create potentially beneficial gastric distension that can be sustained within an individual patient’s tolerance without causing intolerance.
This has the potential to change and enhance treatment outcomes through an individualized approach and assist in decreasing adverse events. Further advancements, applications, and potential benefits of gastric balloons correspond to ongoing research titration techniques, such as a swallowable asset, a pulmonary artery sensor-based balloon, which can adapt the flotational dead space according to eating behaviors.
Other emerging areas of interest in the gastric balloon field include developing personalized therapy approaches to enhance treatment effectiveness. These are both in a population subpopulation grouping and with the consideration of individual patients’ best weight loss maintenance strategies, which typically occur over the long term. In this area, given the potential complementary activities of naltrexone and bupropion and metabolic or gastric balloon devices, combined trials could be of interest, building on the relatively well-known, safe profile of these pharmacotherapies.
These research activities can potentially increase the therapeutic active duration or lessen gastric discomfort and reduce adverse events in traditional gastric balloon therapies by either affecting an individual’s tolerance to gastric balloons. Overall, the field of gastric balloons remains dynamic, and they continue to evolve in accordance with the changing and developing needs and technologies that can be applied to obesity treatment and the need for alternate therapies in an obesity treatment paradigm.
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