Asystole and severe bradycardia in preterm infants.

Unlabelled: Transient episodes of apnea and bradycardia are common in preterm infants. Pronounced asystole or sinus arrest, however, is relatively rare and the clinical significance of such events is unknown.

Objective: The purpose of our study was to: (1) evaluate the prevalence of severe bradycardic and asystolic events in infants studied with polygraphic cardiorespiratory monitoring, (2) characterize these events, and (3) correlate the events with other clinical findings.

Factors that influence use of a home cardiorespiratory monitor for infants: the collaborative home infant monitoring evaluation.

Background: As part of the Collaborative Home Infant Monitoring Evaluation, a home monitor was developed to record breathing, heart rate, other physiologic variables, and the time the monitor was used.

Objective: To determine the frequency of monitor use, factors that influence use, and validity of a model developed to predict use.

Design: We developed a model to predict monitor use using multiple linear regression analysis; we then tested the validity of this model to predict adherence for the first week of monitoring and for the subsequent 4-week period (weeks 2-5).

Clinical correlates, natural history and outcome of neonatal apnoea.

Apnoea is common in the newborn period and especially in preterm newborns. Bradycardia and desaturation of oxyhaemoglobin typically occur with apnoea. These abnormalities reflect an immature cardiorespiratory system and resolution of this immaturity can be expected within a predictable time frame.