24‐hour oxygen saturation recordings in preterm infants: editing artefact

Wellington, Grace; Elder, Dawn; Campbell, Angela

doi:10.1111/apa.14293

Cited by 13 publications

(20 citation statements)

References 16 publications

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“…When manual editing was compared with the auto edit function, there was a median loss of recording time of 89 min after auto editing, and manual editing was associated with a higher SpO 2 and heart rate nadir compared with the auto edit function. With respect to heart rate nadir, there was a median percentage change of 101.9% between manual and auto editing, suggesting that heart rate nadir in particular could be inaccurate in auto edit and may reflect unaddressed artefact on the oximetry trace . It is therefore not unreasonable to assume that the higher values for these variables in the 12‐h period are more likely to be nearer the true value that would be determined after manual editing of the complete 24‐h recording.…”

Section: Discussionmentioning

confidence: 99%

“…It is also possible that these nadir events may be artefact occurring during infant movement. We used the auto edit function of PROFOX to edit the data based on our previous analysis which suggests that this is a reasonable approach as it is not as labour intensive as manual editing but gives clinically similar results . When manual editing was compared with the auto edit function, there was a median loss of recording time of 89 min after auto editing, and manual editing was associated with a higher SpO 2 and heart rate nadir compared with the auto edit function.…”

Section: Discussionmentioning

confidence: 99%

“…Following completion of the 24‐h recording period, data were downloaded onto a laptop using PROFOX Associates, Inc. software. Data were edited using the ‘auto’ function in PROFOX to remove artefact …”

Section: Methodsmentioning

confidence: 99%

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Comparison of 12‐hour and 24‐hour oximetry recordings in preterm infants

Wellington

Campbell

Elder

2018

J Paediatrics Child Health

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Aim: To compare the overnight 12-hour oximetry component of 24-hour oximetry recordings with the complete 24-h recording in terms of cardiorespiratory status data in preterm infants. Methods: Preterm infants from the Wellington neonatal intensive care unit underwent a 24-h pulse oximetry recording immediately prior to discharge home. Each recording was edited to resemble a 12-h overnight recording and compared to the full 24-h recording. Differences in a range of cardiorespiratory variables were assessed as to whether they were statistically significant and, if so, likely to be clinically significant. Results: The nadirs for heart rate and SpO 2 (both P < 0.001), the time spent <80% SpO 2 (P = 0.017) and highest heart rate (P < 0.001) were significantly different between the two recordings. Only the heart rate nadir differed by more than 5%, suggesting that this may be of clinical significance (median (interquartile range) 54 (28-69) for 24-h recording vs. 78 (54-96) for 12-h recording). Conclusion:The 24-h oximetry reports were clinically similar to 12-h recordings for the majority of variables, and therefore, we suggest that 12-h oximetry studies are sufficient for determining cardiorespiratory status in infants.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Comparison of 12‐hour and 24‐hour oximetry recordings in preterm infants

Wellington

Campbell

Elder

2018

J Paediatrics Child Health

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“…The signal was checked and the oximeter left to record for 24 h. A form was provided for parents and/or nurses to document any feeds, cares, or other disturbances to assist with editing data. Following completion of the recording period, data were downloaded onto a laptop using PROFOX software (PROFOX Associates, Inc., CA) and the AUTO function of PROFOX was used to edit data as we have shown previously that this is an appropriate way to edit these data …”

Section: Methodsmentioning

confidence: 99%

“…Following completion of the recording period, data were downloaded onto a laptop using PROFOX software (PROFOX Associates, Inc., CA) and the AUTO function of PROFOX was used to edit data as we have shown previously that this is an appropriate way to edit these data. 14…”

Section: Oximetry Recording At Discharge From the Nicumentioning

confidence: 99%

Intermittent hypoxia in preterm infants: Measurement using the desaturation index

Wellington¹,

Campbell²,

Elder³

2019

Pediatric Pulmonology

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Objective The aims of this study were to: (i) Determine in preterm infants at neonatal discharge the prevalence of intermittent hypoxia (IH), as measured by the oxygen desaturation index (DSI) recorded by pulse oximetry and (ii) Determine the change in values for very preterm infants at 1‐month post discharge. Methods Preterm infants were recruited from the Wellington regional neonatal intensive care unit (NICU) and 24‐h pulse oximetry recordings performed immediately before discharge. Infants born <32 weeks gestational age (GA) had repeat oximetry 1‐month post discharge. Oxygenation measures included the 3% and 4% desaturation (DSI 3%, DSI 4%) indices. Results At discharge from the neonatal unit the median and interquartile range (IQR) for DSI 4% was 51 (31‐74) events per hour with normal mean SpO2 (median of 97.9% [97.2‐98.8 IQR]). Episodes of IH 1 month post discharge decreased with improvements of between 42% and 57% seen for the three DSI measures. Infants <32 weeks GA had higher median DSI 3 and 4% values at discharge but differences when compared with late preterm infants were not significant. Conclusions Preterm infants have frequent episodes of IH as measured by the 3% and 4% DSI when deemed otherwise ready for discharge home. Further research in a larger cohort of very preterm infants and also in term infants is needed to determine the significance of this finding.

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