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Carabelli G, Binotto I, Armano C, Bertù L, Luini C, Nosetti L, Agosti M, Salvatore S. Study on Nocturnal Infant Crying Evaluation (NICE) and Reflux Disease (RED). CHILDREN (BASEL, SWITZERLAND) 2024; 11:450. [PMID: 38671666 PMCID: PMC11048841 DOI: 10.3390/children11040450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/31/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND Nocturnal infant crying is often empirically treated with acid suppressants. The aim of this study was to evaluate the prevalence and characteristics of gastroesophageal reflux (GER) in infants with unexplained persistent crying. METHODS We enrolled all infants (0-12 months) referred for suspected GER disease who underwent esophageal impedance-pH monitoring (MII-pH) for unexplained persistent crying not improved by parental reassurance, dietary modification or alginate. Gastrointestinal malformation/surgery, neurological impairment and infections were exclusion criteria. Demographic and anthropometric parameters, GER symptoms and questionnaires (I-GERQ-R) and MII-pH data were recorded and analyzed. Normal MII-pH was defined when acid exposure was <3%, symptom index was <50% and symptom association probability was <95%. Acid exposure >5% and >10% was also considered. Statistical analysis was performed using Chi-Square and univariate and multivariable regression analysis. RESULTS We included 50 infants (median age 3.5 months) who fulfilled the study criteria: 30 (60%) had normal MII-pH. I-GERQ-R score was abnormal in 33 (66%) infants, and 21/33 (64%) had normal MII-pH (p = 0.47). In the 26 (52%) infants with nocturnal crying, MII-pH was normal in 16 (54%) (p = 0.82). Associated regurgitation (>3 or >10 episodes/die) did not predict abnormal MII-pH (p = 0.74, p = 0.82, respectively). Univariate and multivariable regression analysis did not identify any clinical variable significantly associated with abnormal MII-pH. CONCLUSIONS Infants with persistent unexplained and nocturnal crying should not be empirically treated with acid inhibitors.
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Affiliation(s)
- Greta Carabelli
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
| | - Ivan Binotto
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
| | - Chiara Armano
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
| | - Lorenza Bertù
- Research Center Tromboembolic Diseases, University of Insubria, 21100 Varese, Italy;
| | - Chiara Luini
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
| | - Luana Nosetti
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
| | - Massimo Agosti
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
| | - Silvia Salvatore
- Pediatric Department, “F. Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy; (G.C.); (I.B.); (C.A.); (C.L.); (L.N.); (M.A.)
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Effects on Gastroesophageal Reflux of Donkey Milk-Derived Human Milk Fortifier Versus Standard Fortifier in Preterm Newborns: Additional Data from the FortiLat Study. Nutrients 2020; 12:nu12072142. [PMID: 32708446 PMCID: PMC7400944 DOI: 10.3390/nu12072142] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/11/2020] [Accepted: 07/16/2020] [Indexed: 02/08/2023] Open
Abstract
Background: Feeding intolerance is a frequent diagnosis in very preterm infants. As seen in the FortiLat trial, human milk fortification with the new donkey milk-derived human milk fortifier (DF) seems to improve feeding tolerance in these infants. The aim of this study was to evaluate the effects of using the DF compared with bovine milk-derived fortifier (BF) on gastroesophageal reflux (GER) in very low birth weight (VLBW) infants. Methods: Over a total of 156 preterm infants were enrolled into the FortiLat trial (GA <32 weeks and birth weight <1500 g) and randomized into the BF arm or DF arm, and we selected all infants with clinical signs of GER and cardiorespiratory (CR) symptoms. All the infants underwent CR and multichannel intraluminal impedance and pH (MII/pH) monitoring associated with gastric ultrasound to evaluate GER and gastric emptying time. Results: 10 infants were enrolled, and 5 were in the DF arm. At MII/pH, infants enrolled into the DF arm showed a lower GER frequency than BF arm infants (p = 0.036). Half gastric emptying time was similar in DF and BF arm infants (p = 0.744). Conclusion: The use of donkey-derived human milk fortifier reduced the GER frequency and consequently should be recommended in infants with feeding intolerance.
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Cresi F, Cester EA, Salvatore S, De Rose DU, Ripepi A, Magistà AM, Fontana C, Maggiora E, Coscia A, Francavilla R, Cristofori F. Multichannel Intraluminal Impedance and pH Monitoring: A Step Towards Pediatric Reference Values. J Neurogastroenterol Motil 2020; 26:370-377. [PMID: 32606258 PMCID: PMC7329155 DOI: 10.5056/jnm19205] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 02/12/2020] [Accepted: 02/20/2020] [Indexed: 12/29/2022] Open
Abstract
Background/Aims Combined multichannel intraluminal impedance and pH monitoring (MII/pH) is considered the most accurate test to detect gastroesophageal reflux (GER), however lacking reference values. We aim to determine reference values for the pediatric population and to correlate these values with age and postprandial/fasting period. Methods We evaluated MII/pH traces from patients (newborns, infants, and children) admitted to 3 Italian hospitals and who underwent MII/ pH for suspected GER disease. Patients with MII/pH traces that showed significant symptom-reflux associations and/or a pathological reflux index (> 6% for newborns and infants, > 3% for children) were excluded. Traces were analysed in their entirety, and in the postprandial period (first hour after a meal) and the fasting period (the following hours before the next meal) separately. Results A total of 195 patients (46 newborns, 83 infants, and 66 children) were included. Age positively correlated with frequency of acidic GER events (r = 0.37, P < 0.05) and negatively associated with weakly acidic GER events (r = 0.46, P < 0.05). Conclusions This study describes the distribution of MII/pH values in a pediatric population with normally acidic GER exposure and no significant association between GER events and symptoms. These MII/pH values may be used as reference values in clinical practice for a corrected GER disease diagnosis in the pediatric population.
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Affiliation(s)
- Francesco Cresi
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Elena Andrea Cester
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | | | - Domenico Umberto De Rose
- Department of Pediatrics, Fondazione Policlinico Universitario "A. Gemelli" IRCCS - Università Cattolica del Sacro Cuore, Rome, Italy
| | - Antonio Ripepi
- Pediatric Department, Università dell'Insubria, Varese, Italy
| | - Anna Maria Magistà
- Department of Pediatrics, Aldo Moro University of Bari - Giovanni XXIII Hospital, Bari, Italy
| | - Claudia Fontana
- Department of Pediatrics, Aldo Moro University of Bari - Giovanni XXIII Hospital, Bari, Italy
| | - Elena Maggiora
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Alessandra Coscia
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Ruggiero Francavilla
- Department of Pediatrics, Aldo Moro University of Bari - Giovanni XXIII Hospital, Bari, Italy
| | - Fernanda Cristofori
- Department of Pediatrics, Aldo Moro University of Bari - Giovanni XXIII Hospital, Bari, Italy
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Quitadamo P, Tambucci R, Mancini V, Cristofori F, Baldassarre M, Pensabene L, Francavilla R, Di Nardo G, Caldaro T, Rossi P, Mallardo S, Maggiora E, Staiano A, Cresi F, Salvatore S, Borrelli O. Esophageal pH-impedance monitoring in children: position paper on indications, methodology and interpretation by the SIGENP working group. Dig Liver Dis 2019; 51:1522-1536. [PMID: 31526716 DOI: 10.1016/j.dld.2019.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/02/2019] [Accepted: 07/20/2019] [Indexed: 12/11/2022]
Abstract
Multichannel intraluminal impedance pH (MII-pH) monitoring currently represents the gold standard diagnostic technique for the detection of gastro-esophageal reflux (GER), since it allows to quantify and characterize all reflux events and their possible relation with symptoms. Over the last ten years, thanks to its strengths and along with the publication of several clinical studies, its worldwide use has gradually increased, particularly in infants and children. Nevertheless, factors such as the limited pediatric reference values and limited therapeutic options still weaken its current clinical impact. Through an up-to-date review of the available scientific evidence, our aim was to produce a position paper on behalf of the working group on neurogastroenterology and acid-related disorders of the Italian Society of Pediatric Gastroenterology, Hepatology and Nutrition (SIGENP) on MII-pH monitoring technique, indications and interpretation in pediatric age, in order to standardise its use and to help clinicians in the diagnostic approach to children with GER symptoms.
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Affiliation(s)
- Paolo Quitadamo
- Department of Pediatrics, A.O.R.N. Santobono-Pausilipon, Naples, Italy; Department of Translational Medical Science,"Federico II", University of Naples, Italy.
| | - Renato Tambucci
- Digestive Endoscopy and Surgery Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Valentina Mancini
- Department of Pediatrics and Neonatology, Saronno Hospital, Saronno, Italy
| | - Fernanda Cristofori
- Department of Pediatrics, Giovanni XXIII Hospital, Aldo MoroUniversity of Bari, Bari, Italy
| | - Mariella Baldassarre
- Department of Biomedical Science and Human Oncology-neonatology and Nicu section, University "Aldo Moro", Bari, Italy
| | - Licia Pensabene
- Department of Medical and Surgical Sciences, Pediatric Unit, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Ruggiero Francavilla
- Department of Pediatrics, Giovanni XXIII Hospital, Aldo MoroUniversity of Bari, Bari, Italy
| | - Giovanni Di Nardo
- NESMOS Department, School of Medicine and Psychology, Sapienza University of Rome, Sant'Andrea University Hospital, Rome, Italy
| | - Tamara Caldaro
- Digestive Endoscopy and Surgery Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Paolo Rossi
- Department of Pediatrics, Pediatric Gastroenterology and Liver Unit, Sapienza University of Rome, Rome, Italy
| | - Saverio Mallardo
- Department of Pediatrics, Pediatric Gastroenterology and Liver Unit, Sapienza University of Rome, Rome, Italy
| | - Elena Maggiora
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Annamaria Staiano
- Department of Translational Medical Science,"Federico II", University of Naples, Italy
| | - Francesco Cresi
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Silvia Salvatore
- Pediatric Department, Ospedale "F. Del Ponte", University of Insubria, Varese, Italy
| | - Osvaldo Borrelli
- Division of Neurogastroenterology and Motility, Department of Paediatric Gastroenterology, UCL Institute ofChild Health and Great OrmondStreet Hospital, London, UK
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Abstract
OBJECTIVE Gastroesophageal reflux disease (GERD) in premature neonates may manifest as apnea, bradycardia, growth failure, aspiration, or feeding intolerance. Erythromycin ethylsuccinate (EES), is often used as a pro-kinetic in the management of GERD, despite lack of evidence or safety from randomized controlled trials. We sought to study the efficacy of enteral EES at a dose of 50 mg · kg · day in decreasing the frequency of gastroesophageal reflux events as determined by pH-multichannel intraluminal impedance (pH-MII) monitoring. METHODS In a randomized, double-blind, placebo-controlled trial, eligible premature neonates with clinical signs of GERD underwent 24-hour pH-MII monitoring. If >5 reflux events were identified on pH-MII, then subjects were randomized to receive either EES or placebo. Repeat 24-hour pH-MII was performed on day 7 of study treatment and compared to initial pH-MII. RESULTS Forty-three premature neonates were enrolled. Of those, 31 neonates were randomized, 15 to EES and 16 to placebo with a median (IQR) pretreatment total reflux events per 24 hours of 23 (16-40) and 29 (12-40), respectively. Day 7 total events per 24 hours decreased by 4 events in the EES group to 19 (15-33) and by 10 events in the placebo group to 19 (11-26) (P = 0.09). There were no differences in pretreatment and day 7 acidic and nonacidic reflux, proximal reflux, total or percent reflux time, median or longest bolus clearance time, or nurse-reported apnea events between groups. CONCLUSIONS Enteral EES did not decrease reflux events on 24-hour pH-MII at the dose studied. Therefore, it may be ineffective in the treatment of GERD in premature neonates.
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Cresi F, Martinelli D, Maggiora E, Locatelli E, Liguori SA, Baldassarre ME, Cocchi E, Bertino E, Coscia A. Cardiorespiratory events in infants with gastroesophageal reflux symptoms: Is there any association? Neurogastroenterol Motil 2018; 30:e13278. [PMID: 29266638 DOI: 10.1111/nmo.13278] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/04/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND Cardiorespiratory (CR) events (apnea, bradycardia, oxygen desaturation) and gastroesophageal reflux (GER) symptoms often coexist in infants admitted to Neonatal Intensive Care Unit, leading to over-prescription of drugs and delayed discharge. We aimed to evaluate the relationships between CR and GER events. METHODS The temporal associations between CR and GER events were analyzed in symptomatic infants who underwent synchronized CR and pH-impedance monitoring. The symptom association probability (SAP) index was used to identify infants with a significant number of temporal associations. Gastroesophageal reflux characteristics and the chronological sequence of CR and GER events occurring within 30 seconds of each other were evaluated according to SAP index. KEY RESULTS Of the 66 infants enrolled, aged 29 (18-45) days, 58 had CR events during monitoring. From these 58 patients, a total of 1331 CR events and 5239 GER (24% acidic) were detected. The SAP index was positive in seven (12%) infants. These infants had greater GER frequency, duration, and proximal extent (P < .05). The number of temporal associations was 10 times greater in the positive SAP group. Gastroesophageal reflux events preceded CR events in 83% of these associations. These GER events had a higher proximal extent (P = .004), but showed no differences in pH values. CONCLUSIONS & INFERENCES The simultaneous evaluation of CR and GER events could be useful to identify infants with severe GER and significant temporal associations between these events. Treatment of GER could be indicated in these infants, but as the GER events involved are mainly non-acidic, empirical treatment with antacids is, often, inappropriate.
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Affiliation(s)
- F Cresi
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - D Martinelli
- Neonatology and Neonatal Intensive Care Unit, Department of Biomedical Science and Human Oncology, "Aldo Moro" University of Bari, Bari, Italy
| | - E Maggiora
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - E Locatelli
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - S A Liguori
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - M E Baldassarre
- Neonatology and Neonatal Intensive Care Unit, Department of Biomedical Science and Human Oncology, "Aldo Moro" University of Bari, Bari, Italy
| | - E Cocchi
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - E Bertino
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - A Coscia
- Neonatology and Neonatal Intensive Care Unit, Department of Public Health and Pediatrics, University of Turin, Turin, Italy
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Coscia A, Bertino E, Tonetto P, Peila C, Cresi F, Arslanoglu S, Moro GE, Spada E, Milani S, Giribaldi M, Antoniazzi S, Conti A, Cavallarin L. Nutritional adequacy of a novel human milk fortifier from donkey milk in feeding preterm infants: study protocol of a randomized controlled clinical trial. Nutr J 2018; 17:6. [PMID: 29316931 PMCID: PMC5761142 DOI: 10.1186/s12937-017-0308-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 12/15/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Fortification of human milk is a standard practice for feeding very low birth weight infants. However, preterm infants often still experience suboptimal growth and feeding intolerance. New fortification strategies and different commercially available fortifiers have been developed. Commercially available fortifiers are constituted by a blend of ingredients from different sources, including plant oils and bovine milk proteins, thus presenting remarkable differences in the quality of macronutrients with respect to human milk. Based on the consideration that donkey milk has been suggested as a valid alternative for children allergic to cow's milk proteins, due to its biochemical similarity to human milk, we hypothesized that donkey milk could be a suitable ingredient for developing an innovative human milk fortifier. The aim of the study is to evaluate feeding tolerance, growth and clinical short and long-term outcomes in a population of preterm infants fed with a novel multi-component fortifier and a protein concentrate derived from donkey milk, in comparison to an analogous population fed with traditional fortifier and protein supplement containing bovine milk proteins. METHODS The study has been designed as a randomized, controlled, single-blind clinical trial. Infants born <1500 g and <32 weeks of gestational age were randomized to receive for 21 days either a combination of control bovine milk-based multicomponent fortifier and protein supplement, or a combination of a novel multicomponent fortifier and protein supplement derived from donkey milk. The fortification protocol followed is the same for the two groups, and the two diets were designed to be isoproteic and isocaloric. Weight, length and head circumference are measured; feeding tolerance is assessed by a standardized protocol. The occurrence of sepsis, necrotizing enterocolitis and adverse effects are monitored. DISCUSSION This is the first clinical study investigating the use of a human milk fortifier derived from donkey milk for the nutrition of preterm infants. If donkey milk derived products will be shown to improve the feeding tolerance or either of the clinical, metabolic, neurological or auxological outcomes of preterm infants, it would be an absolute innovation in the field of feeding practices for preterm infants. TRIAL REGISTRATION ISRCTN - ISRCTN70022881 .
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Affiliation(s)
- Alessandra Coscia
- Neonatal Unit of Turin University, City of Health and Science of Turin, Via Ventimiglia 3, 10126 Turin, Italy
| | - Enrico Bertino
- Neonatal Unit of Turin University, City of Health and Science of Turin, Via Ventimiglia 3, 10126 Turin, Italy
| | - Paola Tonetto
- Neonatal Unit of Turin University, City of Health and Science of Turin, Via Ventimiglia 3, 10126 Turin, Italy
| | - Chiara Peila
- Neonatal Unit of Turin University, City of Health and Science of Turin, Via Ventimiglia 3, 10126 Turin, Italy
| | - Francesco Cresi
- Neonatal Unit of Turin University, City of Health and Science of Turin, Via Ventimiglia 3, 10126 Turin, Italy
| | - Sertac Arslanoglu
- Italian Association of Human Milk Banks, Via Libero Temolo 4, 20126 Milan, Italy
| | - Guido E Moro
- Italian Association of Human Milk Banks, Via Libero Temolo 4, 20126 Milan, Italy
| | - Elena Spada
- Neonatal Unit of Turin University, City of Health and Science of Turin, Via Ventimiglia 3, 10126 Turin, Italy
| | - Silvano Milani
- Unit of Medical Statistics and Biometry, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Marzia Giribaldi
- Institute of Sciences of Food Production, National Research Council, Largo Braccini 2, 10095 Grugliasco (TO), Italy
- Research Centre for Engineering and Agro-Food Processing, Council for Agricultural Research and Economics (CREA), Strada delle cacce 73, 10135 Turin, Italy
| | - Sara Antoniazzi
- Institute of Sciences of Food Production, National Research Council, Largo Braccini 2, 10095 Grugliasco (TO), Italy
| | - Amedeo Conti
- Institute of Sciences of Food Production, National Research Council, Largo Braccini 2, 10095 Grugliasco (TO), Italy
| | - Laura Cavallarin
- Institute of Sciences of Food Production, National Research Council, Largo Braccini 2, 10095 Grugliasco (TO), Italy
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Rossor T, Andradi G, Bhat R, Greenough A. Investigation and management of gastro-oesophageal reflux in United Kingdom neonatal intensive care units. Acta Paediatr 2018; 107:48-51. [PMID: 28901635 DOI: 10.1111/apa.14073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/30/2017] [Accepted: 09/08/2017] [Indexed: 11/30/2022]
Abstract
AIM In 2004, wide variation in the investigation and management of gastro-oesophageal reflux (GOR) of infants on UK major neonatal units was demonstrated. Our aim was to resurvey neonatal practitioners to determine current practice and whether it was now evidence based. METHODS A questionnaire was sent to all 207 UK neonatal units. RESULTS Responses were obtained from 84% of units. The most frequent 'investigation' was a trial of therapy (83% of units); pH studies were used in 38%, upper GI contrast studies in 19% and multichannel intraluminal impedance (MII)/pH studies in 5%. Only six units suggested a threshold for an abnormal pH study and two units for an abnormal MII study. Infants were commenced on antireflux medication without investigation always in 32% of units, often in 29%, occasionally in 19% and only never in 1%. Gaviscon was used as first line treatment in 60% of units, and other medications included ranitidine in 53%, thickening agents in 27%, proton pump inhibitors in 23%, domperidone in 22% and erythromycin in 6%. CONCLUSION There remains a wide variation in diagnostic and treatment strategies for infants with suspected GOR on neonatal intensive care units, emphasising the need for randomised trials to determine appropriate GOR management.
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Affiliation(s)
- Thomas Rossor
- Division of Asthma, Allergy and Lung Biology; MRC and Asthma UK Centre in Allergic Mechanisms of Asthma; King's College London; London UK
| | - Gwendolyn Andradi
- Division of Asthma, Allergy and Lung Biology; MRC and Asthma UK Centre in Allergic Mechanisms of Asthma; King's College London; London UK
| | - Ravindra Bhat
- Neonatal Intensive Care Centre; King's College Hospital NHS Foundation Trust; London UK
| | - Anne Greenough
- Division of Asthma, Allergy and Lung Biology; MRC and Asthma UK Centre in Allergic Mechanisms of Asthma; King's College London; London UK
- NIHR Biomedical Research Centre at Guy's and St Thomas’ NHS Foundation Trust and King's College London; London UK
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Singendonk MMJ, Benninga MA, van Wijk MP. Reflux monitoring in children. Neurogastroenterol Motil 2016; 28:1452-9. [PMID: 27682990 DOI: 10.1111/nmo.12922] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 07/18/2016] [Indexed: 12/23/2022]
Abstract
Recently, multichannel intraluminal impedance (MII) monitoring was added to the repertoire of tests to evaluate the (patho)physiology of gastroesophageal reflux (GER) in children. Its advantage above the sole monitoring of the esophageal pH lies in the ability of the detection of both acid and nonacid GER and to discern between liquid and gas GER. Currently, combined 24 h pH-MII monitoring is recommended for evaluation of gastro-esophageal reflux disease (GERD) and its relation to symptoms in infants and children, despite the lack of reference values in these age groups. There is new evidence in the current issue of this Journal supporting the role of pH-MII monitoring for the evaluation of children presenting with gastrointestinal symptoms suggestive of GERD and the prediction of the presence of reflux esophagitis. However, several issues should be taken into account when performing pH-MII clinically.
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Affiliation(s)
- M M J Singendonk
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands.
| | - M A Benninga
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands
| | - M P van Wijk
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands.,Department of Pediatric Gastroenterology, VU University Medical Centre, Amsterdam, The Netherlands
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DEHGHANI SM, TAGHAVI SA, JAVAHERIZADEH H, NASRI M. COMBINED 24-HOURS ESOPHAGEAL PH MONITORING AND MULTICHANNEL INTRALUMINAL IMPEDANCE FOR COMPARISON OF GASTROESOPHAGEAL REFLUX IN CHILDREN WITH TYPICAL VERSUS ATYPICAL SYMPTOMS OF GASTROESOPHAGEAL REFLUX DISEASE. ARQUIVOS DE GASTROENTEROLOGIA 2016; 53:130-5. [PMID: 27438415 DOI: 10.1590/s0004-28032016000300002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 03/29/2016] [Indexed: 02/08/2023]
Abstract
ABSTRACT Background - Gastroesophageal reflux disease is the most common esophageal disorder in pediatrics. Objective - The aim of this study was to compare reflux parameters of typical and atypical symptoms of gastroesophageal reflux disease using 24-hour esophageal pH monitoring and multichannel intraluminal impedance in pediatric population. Methods - In this prospective study, 43 patients aged less than 18 year with suspected gastroesophageal reflux disease were enrolled. The patients were divided into two groups based on the main presenting symptoms (typical versus atypical). Twenty four-hour pH monitoring and multichannel intraluminal impedance were performed in all the patients for comparing these two group regarding association of symptoms and reflux. Number of refluxes, pH related reflux, total reflux time, reflux more than 5 minutes, longest time of the reflux, lowest pH at reflux, reflux index were recorded and compared. Data comparison was done using SPSS. Results - The mean age of the patients was 5.7±3.4 years and 65.1% were male. Out of 43 patients 24 cases had typical symptoms and 19 had atypical symptoms. The mean reflux events detected by multichannel intraluminal impedance was more than mean reflux events detected by pH monitoring (308.4±115.8 vs 69.7±66.6) with P value of 0.037, which is statistically significant. The mean symptom index and symptom association probability were 35.01% ± 20.78% and 86.42% ± 25.79%, respectively in multichannel intraluminal impedance versus 12.73% ± 12.48% and 45.16% ± 42.29% in pH monitoring (P value <0.001). Number of acid reflux was 46.26±47.16 and 30.9±22.09 for atypical and typical symptoms respectively. The mean symptom index was 18.12% ± 13.101% and 8.30% ± 10.301% in atypical and typical symptoms respectively (P=0.034). Bolus clearance was longer in atypical symptoms compared typical symptoms(P<0.05). Conclusion - Symptom index was significantly higher in atypical symptoms compared to typical symptoms. Higher number of acid reflux was found in children with atypical symptoms of reflux. Longer duration of bolus clearance was found in group with atypical symptoms of reflux.
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Affiliation(s)
- Seyed Mohsen DEHGHANI
- Shiraz University of Medical Sciences, Iran; Shiraz University of Medical Sciences, Iran
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11
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Abstract
Despite the frequency with which antireflux procedures are performed, decisions about gastroesophageal reflux disease treatment remain challenging. Several factors contribute to the difficulties in managing gastroesophageal reflux. First, the distinction between physiologic and pathologic gastroesophageal reflux (gastroesophageal reflux disease-GERD) is not always clear. Second, measures of the extent of gastroesophageal reflux often poorly correlate to symptoms or other complications attributed to reflux in infants and children. A third challenge is that the outcome of antireflux procedures, predominately fundoplications, are relatively poorly characterized. All of these factors contribute to difficulty in knowing when to recommend antireflux surgery. One of the manifestations of the uncertainties surrounding GERD is the high degree of variability in the utilization of pediatric antireflux procedures throughout the United States. Pediatric surgeons are frequently consulted for GERD and fundoplication, uncertainties notwithstanding. Although retrospective series and anecdotal observations support fundoplication in some patients, there are many important questions for which sufficient high-quality data to provide a clear answer is lacking. In spite of this, surgeons need to provide guidance to patients and families while awaiting the development of improved evidence to aid in these recommendations. The purpose of this article is to define what is known and what is uncertain, with an emphasis on the most recent evidence.
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Affiliation(s)
- Douglas C Barnhart
- Department of Pediatric Surgery, Primary Children's Hospital, University of Utah, Suite 3800, 100 N Mario Capecchi Dr, Salt Lake City, UT.
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12
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Cresi F, Liguori SA, Maggiora E, Locatelli E, Indrio F, Bertino E, Coscia A. Esophageal Bolus Transit in Newborns with Gastroesophageal Reflux Disease Symptoms: A Multichannel Intraluminal Impedance Study. Pediatr Gastroenterol Hepatol Nutr 2015; 18:238-45. [PMID: 26770898 PMCID: PMC4712536 DOI: 10.5223/pghn.2015.18.4.238] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/14/2015] [Accepted: 09/18/2015] [Indexed: 11/26/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate bolus transit during esophageal swallow (ES) and gastroesophageal reflux (GER) events and to investigate the relationship between the characteristics of ES and GER events in a population of term and preterm newborns with symptoms of gastroesophageal reflux disease (GERD). METHODS The study population consisted of term and preterm newborns referred to combined multichannel intraluminal impedance (MII) and pH monitoring for GERD symptoms. The frequency and characteristics of ES and GER events were assessed by two independent investigators. Statistical significance was set at p<0.05. RESULTS Fifty-four newborns (23 preterm) were included in the analyses. Median bolus head advancing time corrected for esophageal length (BHATc) was shorter during mealtime than during the postprandial period (median, interquartile range): 0.20 (0.15-0.29) s/cm vs. 0.47 (0.39-0.64) s/cm, p<0.001. Median bolus presence time (BPT) was prolonged during mealtime: 4.71(3.49-6.27) s vs. 2.66 (1.82-3.73) s, p<0.001. Higher BHATc (p=0.03) and prolonged BPT (p<0.001) were observed in preterm newborns during the postprandial period. A significant positive correlation between BHATc and bolus clearance time was also observed (ρ=0.33, p=0.016). CONCLUSION The analysis of ES and GER events at the same time by MII provides useful information to better understand the physiopathology of GERD. In particular, the analysis of BHATc during the postprandial period could help clinicians identify newborns with prolonged esophageal clearance time due to impaired esophageal motility, which could allow for more accurate recommendations regarding further tests and treatment.
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Affiliation(s)
- Francesco Cresi
- Neonatal Intensive Care Unit, S.Anna-Regina Margherita Children's Hospital, Torino, Italy.; Department of Pediatrics, University of Torino, Torino, Italy
| | | | - Elena Maggiora
- Neonatal Intensive Care Unit, S.Anna-Regina Margherita Children's Hospital, Torino, Italy.; Department of Pediatrics, University of Torino, Torino, Italy
| | - Emanuela Locatelli
- Neonatal Intensive Care Unit, S.Anna-Regina Margherita Children's Hospital, Torino, Italy.; Department of Pediatrics, University of Torino, Torino, Italy
| | - Flavia Indrio
- Department of Pediatrics, University of Bari Policlinico, Bari, Italy
| | - Enrico Bertino
- Neonatal Intensive Care Unit, S.Anna-Regina Margherita Children's Hospital, Torino, Italy.; Department of Pediatrics, University of Torino, Torino, Italy
| | - Alessandra Coscia
- Neonatal Intensive Care Unit, S.Anna-Regina Margherita Children's Hospital, Torino, Italy.; Department of Pediatrics, University of Torino, Torino, Italy
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de Bortoli N, Martinucci I, Savarino EV, Frazzoni M, Tutuian R, Tolone S, Piaggi P, Furnari M, Russo S, Bertani L, Macchia L, Savarino V, Marchi S. Manually calculated oesophageal bolus clearance time increases in parallel with reflux severity at impedance-pH monitoring. Dig Liver Dis 2015; 47:1027-32. [PMID: 26362613 DOI: 10.1016/j.dld.2015.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/05/2015] [Accepted: 08/15/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Oesophageal clearance has been scarcely studied. AIMS Oesophageal clearance in endoscopy-negative heartburn was assessed to detect differences in bolus clearance time among patients sub-grouped according to impedance-pH findings. METHODS In 118 consecutive endoscopy-negative heartburn patients impedance-pH monitoring was performed off-therapy. Acid exposure time, number of refluxes, baseline impedance, post-reflux swallow-induced peristaltic wave index and both automated and manual bolus clearance time were calculated. Patients were sub-grouped into pH/impedance positive (abnormal acid exposure and/or number of refluxes) and pH/impedance negative (normal acid exposure and number of refluxes), the former further subdivided on the basis of abnormal/normal acid exposure time (pH+/-) and abnormal/normal number of refluxes (impedance+/-). RESULTS Poor correlation (r=0.35) between automated and manual bolus clearance time was found. Manual bolus clearance time progressively decreased from pH+/impedance+ (42.6s), pH+/impedance- (27.1s), pH-/impedance+ (17.8s) to pH-/impedance- (10.8s). There was an inverse correlation between manual bolus clearance time and both baseline impedance and post-reflux swallow-induced peristaltic wave index, and a direct correlation between manual bolus clearance and acid exposure time. A manual bolus clearance time value of 14.8s had an accuracy of 93% to differentiate pH/impedance positive from pH/impedance negative patients. CONCLUSIONS When manually measured, bolus clearance time reflects reflux severity, confirming the pathophysiological relevance of oesophageal clearance in reflux disease.
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Affiliation(s)
- Nicola de Bortoli
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
| | - Irene Martinucci
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Edoardo V Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - Radu Tutuian
- Gastroenterology Unit, University Hospital of Bern, Switzerland
| | - Salvatore Tolone
- Division of Surgery, Department of Surgery, Second University of Naples, Naples, Italy
| | - Paolo Piaggi
- Obesity Research Center, Department of Clinical and Experimental Medicine, University of Pisa, Italy
| | - Manuele Furnari
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Salvatore Russo
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Lorenzo Bertani
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Lorenzo Macchia
- Gastroenterology Unit, University Hospital of Bern, Switzerland
| | - Vincenzo Savarino
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Santino Marchi
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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Abstract
OBJECTIVES It is unclear how diagnostic tests for gastroesophageal reflux disease (GERD) in children relate to the course of symptoms during follow-up. METHODS During 1 year, all children (ages 0-18 years), who underwent pH-metry and/or pH multichannel intraluminal impedance (MII), were included after written informed consent was obtained. pH-metry and pH-MII test characteristics, such as reflux index (RI, % time that esophageal pH < 4), were obtained from the measurements. A questionnaire containing subcategories (medical history, gastrointestinal [GI] symptoms, extraesophageal symptoms, symptom burden, and therapeutic agents) was used; subjects were asked to fill the questionnaire at the time of inclusion and 3, 6, and 12 months afterward. RESULTS A total of 162 infants and 42 children were included. pH-MII was performed in 15.4% and 57.4% of infants and children, respectively. All of the other subjects underwent pH-metry. Median RI was 2.0% (interquartile range 3.4) in infants and 1.7% (interquartile range 2.3) in children. RI was considered positive in 6.8% and 12.8% of infants and children, respectively. In infants, RI at baseline was significantly associated with symptom burden at baseline and at 3 and 12 months of follow-up. RI at baseline and reported GI symptoms at 3 months were also significantly associated. In infants and children using medication, symptom burden was significantly higher compared with those not using medication. This difference was found at baseline, after 3 and 12 months. CONCLUSIONS In infants, an initial high RI is associated with persistence of GI symptoms at 3 months and a higher burden of symptoms during the course of 1 year. In children there were no such findings.
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Singendonk MMJ, Rommel N, Omari TI, Benninga MA, van Wijk MP. Upper gastrointestinal motility: prenatal development and problems in infancy. Nat Rev Gastroenterol Hepatol 2014; 11:545-55. [PMID: 24890279 DOI: 10.1038/nrgastro.2014.75] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Deglutition, or swallowing, refers to the process of propulsion of a food bolus from the mouth into the stomach and involves the highly coordinated interplay of swallowing and breathing. At 34 weeks gestational age most neonates are capable of successful oral feeding if born at this time; however, the maturation of respiration is still in progress at this stage. Infants can experience congenital and developmental pharyngeal and/or gastrointestinal motility disorders, which might manifest clinically as gastro-oesophageal reflux (GER) symptoms, feeding difficulties and/or refusal, choking episodes and airway changes secondary to micro or overt aspiration. These problems might lead to impaired nutritional intake and failure to thrive. These gastrointestinal motility disorders are mostly classified according to the phase of swallowing in which they occur, that is, the oral preparatory, oral, pharyngeal and oesophageal phases. GER is a common phenomenon in infancy and is referred to as GERD when it causes troublesome complications. GER is predominantly caused by transient relaxation of the lower oesophageal sphincter. In oesophageal atresia, oesophageal motility disorders develop in almost all patients after surgery; however, a congenital origin of disordered motility has also been proposed. This Review highlights the prenatal development of upper gastrointestinal motility and describes the most common motility disorders that occur in early infancy.
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Affiliation(s)
- Maartje M J Singendonk
- Department of Paediatric Gastroenterology and Nutrition, Emma Children's Hospital, Academic Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
| | - Nathalie Rommel
- Department of Neurosciences, ExpORL, KU Leuven, O&N II Herenstraat 49, Box 721, 3000 Leuven, Belgium
| | - Taher I Omari
- Gastroenterology Unit, Women's and Children's Health Network, 72 King William Street, 5006 SA, Australia
| | - Marc A Benninga
- Department of Paediatric Gastroenterology and Nutrition, Emma Children's Hospital, Academic Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
| | - Michiel P van Wijk
- Department of Paediatric Gastroenterology and Nutrition, Emma Children's Hospital, Academic Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
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Can MII-pH values predict the duration of treatment for GERD in preterm infants? Early Hum Dev 2014; 90:501-5. [PMID: 25051541 DOI: 10.1016/j.earlhumdev.2014.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 06/21/2014] [Accepted: 07/01/2014] [Indexed: 11/22/2022]
Abstract
BACKGROUND Little is known regarding the prognostic role of Multichannel Intraluminal Impedance and pH monitoring (MII/pH) parameters in preterm infants with Gastro-Esophageal Reflux Disease (GERD). AIM Our study aimed to evaluate the relationship between MII/pH variables and the duration of pharmacological therapy for GERD, in preterm infants with gestational age (GA) ≤34weeks. SUBJECTS, STUDY DESIGN, OUTCOME MEASURES We retrospectively reviewed data of all newborns with GA ≤34weeks that underwent MII/pH in our Neonatal Intensive Care Unit (NICU) and pharmacological treatment for GERD. We included them in a 12-month follow-up program. MII/pH parameters were used as independent variables and the duration of pharmacological therapy as dependent variable in linear regression models. RESULTS 16 patients (GA 28.4±1.8weeks, BW 1122±427g) were enrolled into the study. Regression analysis performed on all reflux events reported a significant correlation between the duration of pharmacological treatment and MII-BEI (r(2)=0.36, p=0.01) and MII-reflux frequency (r(2)=0.33, p=0.02). Moreover, regression analysis performed on all events classified according to the corresponding pH change - acidic (ac.), weakly acidic (w.ac.) or weakly alkaline (w.a.) - showed a significant correlation between the duration of pharmacological treatment and MII-w.ac.BEI (r(2)=0.26, p=0.05), MII-w.ac. reflux frequency (r(2)=0.44, p=0.01), and MII-proximal w.ac. reflux frequency (r(2)=0.35, p=0.02). No statistically significant correlation was found between pH-Reflux Index and the duration of treatment. CONCLUSION The study shows how, in our population of preterm infants, MII-parameters could have not only a diagnostic role, but also a prognostic value in terms of the duration of pharmacological treatment.
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Brisebois S, Samson N, Fortier PH, Doueik AA, Carreau AM, Praud JP. Effects of reflux laryngitis on non-nutritive swallowing in newborn lambs. Respir Physiol Neurobiol 2014; 200:57-63. [PMID: 24893350 DOI: 10.1016/j.resp.2014.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/13/2014] [Accepted: 05/27/2014] [Indexed: 11/15/2022]
Abstract
Reflux laryngitis in infants may be involved not only in laryngeal disorders, but also in disorders of cardiorespiratory control through its impact on laryngeal function. Our objective was to study the effect of reflux laryngitis on non-nutritive swallowing (NNS) and NNS-breathing coordination. Two groups of six newborn lambs, randomized into laryngitis and control groups, were surgically instrumented for recording states of alertness, swallowing and cardiorespiratory variables without sedation. A mild to moderate reflux laryngitis was induced in lambs from the experimental group. A significant decrease in the number of NNS bursts and apneas was observed in the laryngitis group in active sleep (p=0.03). In addition, lower heart and respiratory rates, as well as prolonged apnea duration (p<0.0001) were observed. No physiologically significant alterations in NNS-breathing coordination were observed in the laryngitis group. We conclude that a mild to moderate reflux laryngitis alters NNS burst frequency and autonomous control of cardiac activity and respiration in lambs.
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Affiliation(s)
- Simon Brisebois
- Department of Surgery, ENT Division, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4
| | - Nathalie Samson
- Department of Pediatrics, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4; Department of Physiology, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4
| | - Pierre-Hugues Fortier
- Department of Surgery, ENT Division, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4
| | - Alexandre A Doueik
- Department of Pathology, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4
| | - Anne-Marie Carreau
- Department of Pediatrics, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4; Department of Physiology, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4
| | - Jean-Paul Praud
- Department of Pediatrics, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4; Department of Physiology, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4; Department of Surgery, ENT Division, Université de Sherbrooke, 3001 12(e) Avenue Nord, Sherbrooke (QC), Canada J1H 5N4.
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Abstract
Apnea of prematurity and gastroesophageal reflux (GER) are both common occurrences in preterm infants and widely perceived to be causally related. We seek in this review to provide a potential guideline for neonatal GER non-pharmacologic and pharmacologic therapy. Available physiologic data suggest that when there is a temporal relationship apnea may be more likely to predispose to GER via esophageal sphincter relaxation than vice versa. Measurement of multiple intraluminal impedance via esophageal catheter in addition to esophageal pH has enhanced our understanding of GER, although it also did not demonstrate a causal relationship between apnea and GER. The incidence of GER may be modified by thickening feeds and position change without adverse effects. In contrast, pharmacotherapy including acid suppression therapy may have adverse effects and should only be used in infants with clear evidence of clinical benefit.
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