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Azithromycin Induces Migrating Motor Complexes in Pediatric Patients Undergoing Antroduodenal Motility Studies
Objective:
Erythromycin (ERY) is used in the treatment of gastroparesis; however, this medication is associated with serious side effects, such as cardiac arrhythmias and consequent cardiorespiratory arrest. Azithromycin (AZM) has been suggested as an alternative to ERY as a result of its improved safety profile. Intravenous ERY (1 mg/kg) is administered during antroduodenal motility studies to induce migrating motor complexes (MMCs), the presence or absence of which helps diagnose motility disorders like gastroparesis and gastrointestinal dysmotility. However, there are no pediatric studies comparing the effects of AZM and ERY on antroduodenal pressure profiles. The goal of this study is to determine if AZM is comparable in inducing MMCs in pediatric patients undergoing antroduodenal motility studies.
Methods:
We performed a retrospective chart analysis of gastric and small bowel manometric data in 2 adolescent patients, both age 15 years, who were given AZM (1 mg/kg) during antroduodenal motility studies. The pressure profiles obtained during motility studies were compared to those of patients of similar age and symptomology who were given the standard intravenous ERY dose during motility studies. We then compared the total duration of effect, mean amplitude of contractions, number of cycles per minute, and duration of highest antral and duodenal contractions.
Results:
Intravenous AZM induces migrating motor contractions in the stomach followed by contractions in the small intestine. The mean amplitude of the stomach contractions was 259 mm Hg in patients who received AZM vs 241 mm Hg in patients who received ERY. The mean amplitude of small intestinal MMCs was 68 mm Hg in patients who received AZI and 72 mm Hg in patients who received ERY. Additionally, the frequency and duration of stomach and small intestinal contractions were also similar in the 2 groups.
Conclusions:
Intravenous AZM has similar prokinetic effects to intravenous ERY. Our study suggests that AZM is a suitable alternative to ERY in inducing MMCs without the concerning side effects related to ERY and may potentially be used in the management of gastroparesis and other small bowel motility disorders. However, larger prospective studies are required to better understand the long-term efficacy of AZM.
Insights
Azithromycin (AZM) effectively induces migrating motor complexes (MMCs) in pediatric patients, similar to Erythromycin (ERY). This suggests AZM is a safer alternative for diagnosing gastroparesis and other motility disorders.
Area of Science:
- Gastroenterology
- Pediatric Motility Studies
- Pharmacology
Background:
- Erythromycin (ERY) is a prokinetic agent used for gastroparesis diagnosis but carries risks like cardiac arrhythmias.
- Azithromycin (AZM) presents a potentially safer alternative due to its improved safety profile.
- Antroduodenal motility studies use intravenous ERY to induce migrating motor complexes (MMCs) for diagnosing motility disorders.
Purpose of the Study:
- To compare the efficacy of intravenous Azithromycin (AZM) versus Erythromycin (ERY) in inducing MMCs in pediatric patients.
- To evaluate AZM as a potential alternative to ERY for antroduodenal motility studies in children.
Main Methods:
- Retrospective analysis of antroduodenal manometric data from 2 adolescent patients who received intravenous AZM (1 mg/kg).
- Comparison of pressure profiles with age-matched patients who received intravenous ERY.
- Evaluation of parameters including duration of effect, contraction amplitude, and frequency.
Main Results:
- Intravenous AZM successfully induced MMCs in the stomach and small intestine.
- Mean amplitude of stomach contractions was comparable (259 mm Hg for AZM vs. 241 mm Hg for ERY).
- Mean amplitude and frequency of small intestinal MMCs were similar between AZM and ERY groups.
Conclusions:
- Intravenous AZM demonstrates prokinetic effects comparable to intravenous ERY in pediatric patients.
- AZM is a potential alternative to ERY for inducing MMCs, offering a better safety profile.
- Larger prospective studies are needed to confirm AZM's long-term efficacy in managing gastroparesis and other motility disorders.
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