There is a strong link between GERD and laryngomalacia. All babies reflux, but children with laryngomalacia may have more than other babies. Acid reflux, if it reaches the upper portion of the swallowing tube (esophagus) and voice box region, can cause additional swelling of the floppy tissue seen in LM.
The Gastric Reflux Test (Multichannel Intraluminal Impedance Test) is performed to detect and record the number of times stomach contents come back into the esophagus and the relation of these episodes to symptoms (for example, when a child cries, arches, coughs, gags, vomits, has chest pain). It also determines if the contents are acidic or not and how long they stay in the esophagus.
A thin light wire with an acid sensor as well as six to seven metal sensors is inserted through the nose into the lower part of the esophagus. The impedance probe is connected to a recorder box that the patient will carry with them for the duration of the study. Child life staff may be a useful resource to aid the patient and staff during placement of the probe, as this can be an uncomfortable procedure while awake.
Microlaryngoscopy and Bronchoscopy
This test is done in the operating room under general anesthesia by the ENT surgeon. The doctor looks at the voice box and windpipe with telescopes. Your doctor may recommend this test if the X-ray test shows something abnormal or if your doctor suspects additional airway problems.
An EGD is a diagnostic test done in the operating room under general anesthesia. The gastroenterologist looks at your child's esophagus and stomach with a lighted tube.
During an EGD, the doctor looks for signs of chronic inflammation from acid irritation that can occur in the stomach or the esophagus. Your doctor may recommend this if the pH probe is significantly abnormal or there is strong suspicion of significant GERD based on history and clinical examination.