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V van Someren

Publications and source records attributed to V van Someren.

6 recordsLinked to original sources
PubMed2000

Are sleep studies worth doing?

AIMS: To evaluate a sleep study service for children suspected of having sleep related upper airway obstruction (SRUAO). DESIGN: Prospective survey. SETTING: Paediatric and ear, nose, and throat clinics of the Royal Free Hampstead NHS Trust. SUBJECTS: Consecutively referred children with SRUAO symptoms. MAIN OUTCOME MEASURES: Sleep study data, referring clinician's impression, and completed symptom questionnaires. RESULTS: A total of 120 children (aged 6 months to 15.5 years) were studied. Study scores showed that 24 were classified as normal, 42 as mild, 33 as moderate, and 21 as severe SRUAO. In the 106 cases with matching data between clinician's impression and study score, 71 had good agreement, 18 were underestimated by the clinician, and 17 were over estimated. No cases reported as moderate or severe sleep apnoea by the study were referred by the clinician as normal. There were no important associations between parental symptom scores and sleep study scores. CONCLUSION: In children with suspected SRUAO, sleep studies do contribute to assessing the need for operation, the likelihood of postoperative respiratory failure, or as a baseline or outcome measure in intervention studies.

Adolescent↗
PubMed1984

An investigation into the benefits of resiting nasoenteric feeding tubes.

Partial nasal obstruction in preterm infants increases the airway resistance. In spite of this, nasal feeding tubes are often used, if only because oral tubes are difficult to secure. A palatal appliance has been devised that maintains the position of oroenteric feeding tube(s) and is not associated with local complications. In order to assess the effects of resiting feeding tubes, two related studies were carried out. The first study, a trial, included respiratory monitoring of 29 infants on the third and/or seventh day after either the appliance and oroenteric tubes had been inserted, or, in the control group, after the nasoenteric tubes had been passed. After seven days, the infants using the palatal appliance had significantly less periodic breathing, central apnea, and movement than the control group. The second study showed that the removal of feeding tubes that had been in situ for several days reduced apnea rates and produced a significant increase in transcutaneous PO2.

Airway Obstruction↗
PubMed1983

A critical dissection of obstructive apnea in the human infant.

It is universally accepted that with the cessation of airflow, the infant is technically apneic, but the significance of such respiratory "pauses" remains a matter of discussion. Central apnea is easily recognized, but the absence of airflow with continued "respiratory" movements is commonly interpreted as obstructive apnea. The respiratory pattern of individual normal and abnormal infants was studied in depth. Airflow was monitored using a recently devised facial plate thermistor system; chest movement was recorded by measuring changes in thoracic impedance. On several occasions, esophageal pressure was also recorded as was expired CO2. Using the above systems, it was confirmed that mouth breathing in the infant is confined to periods of crying or yawning, and that many "obstructive" episodes merely represent straining against a closed glottis during movement.

Air↗