Effect of vowel context on test-retest nasalance score variability in children with and without cleft palate

Maternal perception of breastfeeding in children with unilateral cleft lip and palate: A qualitative interpretative analysis

BACKGROUND

Unilateral cleft lip and / or palate (UCL/P) is one of the most common congenital craniofacial differences. The objective of this study was to describe the maternal perception of breastfeeding in children with unilateral cleft lip and palate and to assess the role of breastfeeding counseling.

METHODS

This study was conducted using an interpretive phenomenological approach to explore the experience from the perspectives of mothers breastfeeding her UCL/P child. Twenty-eight mothers of patients with nonsyndromic UCL/P treated with nasoalveolar molding (NAM) therapy between April 2015 and April 2018 were selected during consultations at the Fundación Clínica Noel in Medellín, Colombia. Thematic analysis was conducted for qualitative data.

RESULTS

The findings resulted in six main categories: First contact with the CL/P team, access to early diagnosis and timely treatment, perceptions of parents about health personnel on breastfeeding of CL/P patients, perceptions of mothers toward breastfeeding, perception of advantages and disadvantages of the NAM technique regarding breastfeeding and assessment of the CL/P team. The interviewed mothers, both prenatally and postnatally, stated the benefits of initiating the process prenatally. There are still difficulties in reaching a timely diagnosis. Several mothers noted that health professionals and assistants determined the hospitalization, installation of a nasogastric tube or feeding through a baby bottle or syringe, which prevented the first contact between mother and child. Even though the exclusive breastfeeding process is difficult for these mothers, they acknowledge its immense advantages. Interviewed mothers considered using the NAM therapy advantageous as the obturator allowed a better bottle-feeding process. The interdisciplinary team generates satisfaction, motivation, expectations and happiness in the mothers who initiated this therapy with their children.

CONCLUSION

The participants related difficulties with exclusive breastfeeding. Mothers acknowledged the clinical results when using the NAM therapy and the support provided by the IBCLC. We encourage health providers in Medellín, Colombia, to seek education to enhance their clinical skills and promote and protect breastfeeding. Also, health professionals in other cities or countries could consider search more breastfeeding education as well.

Effects of different calibration schedules on the test-retest differences of nasalance scores obtained with the Nasometer 6450

Nasometry is used to assess nasality in speech but it is unclear whether overly frequent recalibration of the instrument adds measurement errors. The goal of the present research study was to describe the effect of the Nasometer 6450 calibration on the nasalance scores of repeated recordings. In a first experiment, the Nasometer calibration values stored in the computer's registry were manipulated to investigate the impact on nasalance scores. In the second experiment, a set of pre-recorded speech samples was re-recorded 40 times with a Nasometer 6450 in 4 different calibration regimens: Short-term repeated recordings without (R1) and with recalibration (R2C), and long-term repeated recordings over 10 days without (R3) and with recalibration (R4C). The first experiment showed that, compared to a calibration value of 1.0, a value of 0.9 resulted in nasalance scores that were on average 3 points lower while a calibration value of 1.1 resulted in scores that were 0.5 points higher. The results of the second experiment showed test-retest differences of less than 2 nasalance points for 91% of the data for a non-nasal stimulus. For a nasal stimulus, 91% of data were within 5 points for R3 and R4C. The results suggested that frequent recalibration of the Nasometer may slightly increase test-retest differences of nasalance scores. An alternative procedure for verifying microphone balance without recalibration is suggested.