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Technical Report
1 Consultant Neonatologist Consultant Pediatrician, Head of Neonatology Department, Emirates Specialty Hospital DHCC, Dubai, UAE
Address correspondence to:
Monika Kaushal
Consultant Neonatologist Consultant Pediatrician, Head of Neonatology Department, Emirates Specialty Hospital DHCC, Dubai,
UAE
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Article ID: 100008M01MK2020
Respiratory distress syndrome (RDS) is one of the morbidities of prematurity. Surfactant has radicalized the treatment of RDS. Despite the widespread use the ideal method of surfactant administration is still evolving. There are some infants who cannot be intubated due to airway abnormality. Laryngeal mask airway (LMA) is one alternative to provide ventilation. There is dearth of evidence of laryngeal mask airway (LMA) use in infants born below 34 weeks of gestation. When such infants need surfactant, the evidence is lacking if can be administered through LMA. We present a case along with video of the feasibility of ventilating baby below 34 weeks with LMA as well as administering surfactant through a relatively new technique surfactant administration through laryngeal supraglottic airway (SALSA).
Keywords: Laryngeal mask airway, Surfactant
Preterm babies are born with immature lungs and usually are deficient in surfactant. Fujiwra first administered surfactant in 1980 in preterm as therapy for hyaline membrane disease [1]. This is first therapy which was intended to be used only for the neonates. Over years we have tried different modes of administering the surfactant. As we are advancing, we understood that less invasive we are, better is the outcome as far as morbidity and mortality is concerned. We started our journey with intratracheal administration of surfactant followed by ventilation. Soon the side effects of prolonged ventilation on preterm lungs were recognized. Intubation surfactant extubation (INSURE) was a technique started to reduce the ventilatory associated lung injury [2]. Even brief period of ventilation was damaging to the fragile preterm lungs and hence other Less Invasive Surfactant Administration (LISA) and Minimal Incase Surfactant (MIST) were tried and found to be successful [3]. Sometimes we have babies who have difficult airway like Pierre Robin syndrome, Cornelia de Lange, cleft palate, and Beckwith–Wiedemann syndrome where it becomes difficult to intubate. In such cases airway is secured with laryngeal mask airway (LMA) [4],[5],[6],[7]. Laryngeal mask airway is recommended to be used for neonatal resuscitation [8]. Schmölzer et al. in a systematic review on supraglottic airway devices in neonatal resuscitation established that resuscitation with an LMA was viable and harmless in infants of >34 weeks’ gestational age (GA) and a birth weight WO 6 (BW) >2,000 g [4].
Laryngeal mask airway is less invasive to the lungs and the neonate is exposed to a lower hemodynamic strain reaction throughout LMA positioning and removal. Laryngoscopy and tracheal intubation are often associated with complications like local trauma, the stress-response reflex, and malpositioning of the endotracheal tube in the esophagus or deep in right bronchial tree. It may also generate hypertension and cyanosis in infants.
Its practice may be lifesaving in neonates with malformations of the upper airway when tracheal intubation and mask ventilation fail.
Complications of LMA are soft tissue trauma, vomiting, regurgitation, stridor, and if not placed properly may lead to partial airway obstruction and apnea [9],[10].
When these babies require surfactant, we cannot use the same methods to administer it. Surfactant administration through laryngeal supraglottic airway (SALSA) is one such new method. Its new and very few units are practicing it. One single small trial showed LMA surfactant administration in preterm infants ≥ 1200 g with RDS may have a short-term favorable effect on reduced oxygen requirements [11] to have better outcome, correct technique to insert LMA, and administer surfactant is important.
We had one preterm 31-week baby born with macroglossia, micrognathia fitting in criteria of Beckwith–Wiedemann syndrome who required resuscitation at birth but failed intubation due to macroglossia. Laryngeal mask airway was inserted in the baby and ventilation was provided by LMA. In neonatal intensive care unit (NICU) found to have RDS requiring surfactant administration. We administered surfactant through LMA and it was effective. The oxygen requirement and the ventilatory requirement decreased. The baby required a second dose of surfactant which was also given through LMA. The baby tolerated the procedure well and could be brought down on FiO2 requirements.
This instructional video 1 was made to educate the step wise to administer surfactant using new method SALSA technique. As far as we know there is no video on live baby demonstrating the LMA insertion and surfactant administration.
We conclude that LMA is alternative, unique, and effective method of surfactant administration in difficult airway even in preterm babies 31 weeks of gestation.
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Monika Kaushal - Conception of the work, Design of the work, Acquisition of data, Drafting the work, Revising the work critically for important intellectual content, Final approval of the version to be published, Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Saima Asghar - Acquisition of data, Drafting the work, Revising the work critically for important intellectual content, Final approval of the version to be published, Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Ayush Kaushal - Drafting the work, Final approval of the version to be published, Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Prima Augustine - Acquisition of data, Drafting the work, Final approval of the version to be published, Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Merena Alex - Acquisition of data, Drafting the work, Final approval of the version to be published, Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Guaranter of SubmissionThe corresponding author is the guarantor of submission.
Source of SupportNone
Consent StatementWritten informed consent was obtained from the patient for publication of this article.
Data AvailabilityAll relevant data are within the paper and its Supporting Information files.
Conflict of InterestAuthors declare no conflict of interest.
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