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Bronchoalveolar lavage plus surfactant in a piglet model of meconium aspiration syndrome. 2008

Mauricio Obal Colvero, and Humberto Holmer Fiori, and Renato Machado Fiori, and Jorge Hecker Luz, and Davi de Paula, and Christina Oppermann, and Paulo Márcio Pitrez, and Vinícius Duval da Silva, and Aline Pieruccini Colvero
Department of Pediatrics, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.

BACKGROUND Meconium aspiration produces airway obstruction and surfactant inhibition. Bronchoalveolar lavage (BAL) and surfactant replacement have been proposed as treatments for the syndrome. OBJECTIVE To evaluate the effect of BAL with normal saline followed by a supplementary dose of surfactant in a piglet model of meconium aspiration syndrome. METHODS 15 newborn piglets were used in the study. The animals were ventilated with fixed settings. After inhalation of 4 ml/kg of diluted meconium, the piglets were randomized into three groups: group I (n = 5) - tracheal aspiration without BAL; group II (n = 5) - BAL with normal saline (15 ml/kg), and group III (n = 5) - BAL with normal saline (15 ml/kg) followed by a supplementary dose of surfactant (Curosurf(R) 100 mg/kg). Arterial blood gas samples were obtained 30 min and 6 h after the inhalation of meconium. RESULTS A significant increase of PaO(2 )values at 6 h after treatment was only observed in group III (from 51 +/- 13 to 189 +/- 115 mm Hg; p = 0.04). At this time, PaO(2) in group III was significantly higher compared to group II (189 +/- 115 and 37 +/- 11 mm Hg, respectively; p = 0.023) and showed a borderline significance when compared to group I (p = 0.066). CONCLUSIONS BAL with normal saline followed by a supplementary dose of surfactant may improve oxygenation in an experimental piglet model of meconium aspiration syndrome.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008471 Meconium Aspiration Syndrome A condition caused by inhalation of MECONIUM into the LUNG of FETUS or NEWBORN, usually due to vigorous respiratory movements during difficult PARTURITION or respiratory system abnormalities. Meconium aspirate may block small airways leading to difficulties in PULMONARY GAS EXCHANGE and ASPIRATION PNEUMONIA. Aspiration, Meconium,Meconium Aspiration,Meconium Inhalation,Aspiration Syndrome, Meconium,Syndrome, Meconium Aspiration
D011663 Pulmonary Surfactants Substances and drugs that lower the SURFACE TENSION of the mucoid layer lining the PULMONARY ALVEOLI. Surfactants, Pulmonary,Pulmonary Surfactant,Surfactant, Pulmonary
D011897 Random Allocation A process involving chance used in therapeutic trials or other research endeavor for allocating experimental subjects, human or animal, between treatment and control groups, or among treatment groups. It may also apply to experiments on inanimate objects. Randomization,Allocation, Random
D001784 Blood Gas Analysis Measurement of oxygen and carbon dioxide in the blood. Analysis, Blood Gas,Analyses, Blood Gas,Blood Gas Analyses,Gas Analyses, Blood,Gas Analysis, Blood
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D006651 Histocytochemistry Study of intracellular distribution of chemicals, reaction sites, enzymes, etc., by means of staining reactions, radioactive isotope uptake, selective metal distribution in electron microscopy, or other methods. Cytochemistry
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000831 Animals, Newborn Refers to animals in the period of time just after birth. Animals, Neonatal,Animal, Neonatal,Animal, Newborn,Neonatal Animal,Neonatal Animals,Newborn Animal,Newborn Animals

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