Nasal Continuous Positive Airway Pressure in Bronchiolitis: A Randomized Controlled Trial

Objective: To evaluate the efficacy of nasal continuous positiveairway pressure (nCPAP) in decreasing respiratory distress inbronchiolitis.Design: Randomized controlled trial.Setting: Tertiary-care hospital in New Delhi, India.Participants: 72 infants (age <1y) hospitalized with a clinicaldiagnosis of bronchiolitis were randomized to receive standardcare, or nCPAP in addition to standard care, in the first hour afteradmission. 23 parents refused to give consent for participation. 2infants did not tolerate nCPAP.Intervention: The outcome was assessed after 60 minutes. IfnCPAP was not tolerated or the distress increased, the infant wasswitched to standard care. Analysis was done on intention-to-treatbasis Main outcome measures: Change in respiratory rate,Silverman-Anderson score and a Modified Pediatric Society ofNew Zealand Severity Score.Results: 14 out of 32 in nCPAP group and 5 out of 35 in standardcare group had change in respiratory rate ?10 (P=0.008). Themean (SD) change in respiratory rate [8.0 (5.8) vs 5.1 (4.0),P=0.02] in Silverman-Anderson score [0.78 (0.87) vs 0.39 (0.73),P=0.029] and in Modified Pediatric Society of New ZealandSeverity Score [2.5 (3.01) vs. 1.08 (1.3), P=0.012] weresignificantly different in the nCPAP and standard care groups,respectively.Conclusion: nCPAP helped reduce respiratory distresssignificantly compared to standard care.

Observation on effect of dopamine,phentolamine,recombinant interferon α combined with NCPAP in treating severe infantile bronchiolitis / 重庆医学

Objective To explore the clinical effect of dopamine,phentolamine,recombinant interferon α combined with nasal continuous positive airway pressure(CPAP) ventilation in treating severe infantile bronchiolitis.Methods Ninety-five cases of infantile severe bronchiolitis were divided into the observation group(55 cases) and control group (40 cases).The control group was given the combined treatment scheme of dopamine,phentolamine and recombinant interferon α,while on this basis the observation group was added with NCPAP.The curative effects were compared between the two groups.Results The total effective rate in the observation group was significantly higher than that in the control group(P0.05);the recurrence rate and death rate in the observation group were significantly lower than those in the control group with statistical difference(P0.05).Conclusion Dopamine,phentolamine,recombinant interferon α combined with NCPAP has obviously clinical effect for treating infantile severe bronchiolitis,can effectively improve the blood gas analytical indexes,reduces the signs and symptoms relief time,reduces the rates of relapse and death,and has higher clinical application value.

Nasal resistance in patients with obstructive sleep apnea hypopnea syndrome and the effect of nCPAP / 实用医学杂志

Objective To observe nasal resistance in healthy adult people and patients with obstructive sleep apnea hypopnea syndrome (OSAHS), comparing the changes in nasal resistance after nCPAP treatment, and to explore the role of nasal resistance in development of OSAHS and the effect of nCPAP on nasal resistance. Methods Detection of nasal resistance was performed in 11 healthy people and 40 patients with OSAHS after completion of polysomnography (PSG). Three weeks after treatment with nCPAP, the patients received polysomnography and detection of nasal resistance again. Results Nasal resistance was higher in patients with OSAHS than healthy people [(0.27 ± 0.9)Pa/(cm3·s) vs. (0.21 ± 0.7)Pa/(cm3·s), t=-2.048, and P0.05). MinSO2, AHI and ODI were markedly improved three weeks after nCPAP therapy (P<0.05). Nasal resistance was increased from (0.27 ± 0.1) Pa/(cm3·s) to (0.43 ± 0.3)Pa/(cm3·s) after treatment (t = -2.733, P < 0.05). Conclusions Increased nasal resistance is one of risk factors for pathogenesis of OSAHS. Nasal resistance is not related with the severity of OSAHS. nCPAP can lead to an elevation in nasal resistance.

Prophylactic Administration of Surfactant with Nasal Continuous Positive Airway Pressure in Preterm Infants with Gestational Age Less than 30 Weeks

PURPOSE: This study was performed to investigate the effectiveness and safety of the prophylactic administration method of surfactant, followed by rapid extubation to nasal CPAP (nCPAP) in very preterm infants. METHODS: Thirty-three preterm infants with 24-29 weeks gestational age (GA) were treated with the method of prophylactic administration of surfactant by a brief intubation within 15 minutes after birth and rapid extubation to nCPAP for the treatment of respiratory distress. The variables and complications related to oxygen therapy and mechanical ventilation (MV) were compared with those of 24 historical control infants with comparable GA, treated with the rescue surfactant administration with prolonged MV for the respiratory distress syndrome (RDS). RESULTS: Prophylactic surfactant with nCPAP did not reduce the total durations of oxygen therapy and MV, compared with the rescue surfactant with MV (P=0.622 P=122, respectively). The incidence of death and BPD at 36 weeks postmenstrual age (PMA) and other complications related to oxygen therapy and MV were not increased in the infants treated with prophylactic surfactant with nCPAP despite the lower GA and birth weight. In the subgroup analysis for infants with 27-29 weeks of GA, the total duration of MV tended to decrease in infants treated with prophylactic surfactant with nCPAP (Odd ratio, 0.93, 95% Confidence interval, 0.87, 1.00, P=0.051). CONCLUSION: Prophylactic surfactant administration followed by rapid extubation to nCPAP tended to reduce the duration of MV in infants with GA of 27-29 weeks, compared with the rescue surfactant administration with prolonged MV for RDS.

Sleep Fragementation Decreases during the nCPAP Titration Night in Obstructive Sleep Apnea Syndrome / 수면정신생리

OBJECTIVES: Obstructive sleep apnea syndrome (OSAS) not only causes respiratory disturbances during sleep but also decreases the quality of nocturnal sleep through sleep fragmentation and sleep structure change. We aimed at comparing the changes in sleep fragmentation and structure between baseline (diagnostic) nocturnal polysomnography (NPSG) and nCPAP (nasal continuous positive airway pressure) titration trial. METHODS: One hundred and three patients with a baseline night of respiratory disturbance index (RDI) of 5 or greater and reduced RDI score during nCPAP titration night were retrospectively selected for the study. Sleep fragementation and sleep structure between baseline NPSG and the NPSG during nCPAP titration were compared. Sleep fragmentation index (SFI) was defined as the total number of awakenings and shifts to stage 1 sleep divided by the total sleep time in hour. SFI and other polysomnographic parameters were statistically compared between the two nights. RESULTS: SFI during baseline NPSG and nCPAP titration nights were 29.0+/-13.8 and 15.2+/-8.8, respectively, indicating a significant SFI decrease during nCPAP titration (t=9.7, p<0.01). SFI showed significant negative correlations with sleep efficiency (r=-0.60, p<0.01) and total sleep time (r=-0.45, p<0.01) and a positive correlation with RDI (r=0.28, p<0.01). CONCLUSION: Use of nCPAP, even during the titration, significantly decreases sleep fragmentation and improves sleep structure in OSAS patients. We suggest that SFI may be utilized as a measure of assessing OSAS severity and nCPAP efficacy.

¿Qué pasa con los pacientes luego de que ses diagnostica Apneas del Sueño? / What happens with patients after they have been diagnosed Sleep Apnea?

Numerosos pacientes con diagnóstico de SAHOS moderado severo no reciben finalmente tratamiento efectivo. El objetivo del estudio es evaluar el grado de utilización de las medidas terapéuticas necesarias entre estos enfermos y los motivos de no tratamiento o tratamiento insuficiente. Métodos: Muestra consecutiva de pacientes derivados al Laboratoriode Sueño del IADIN entre agosto y diciembre de 2006 con solicitud de Polisomnografía por síntomas de apneas del sueño, la que diagnosticó SAHOS moderado severo. Durante julio de 2007 se les realizó una encuesta telefónica. Resultados: 100 pacientes encuestados, 85 varones, IPR 51.9±30.9ev/h, edad 52,38±12.2, IMC 34.1±10.6.47 pacientes no hicieron tratamiento alguno. 52 comenzaron tratamiento con CPAP, pero 12 lo suspendieron. 2 pacientes fueron sometidos a tratamiento quirúrgico. 90 pacientespresentaban un IMC mayor de 25, 64p > 30 y 32p > 35. 30 consultaron un nutricionista, 21 pacientes bajaron de peso, solo 3 lograron bajar más del 20% del basal. Los pacientesno tratados presentaron un IPR menor (p 0.02). Conclusiones: Si bien se ha incrementado el nivel de conciencia y alerta acerca de las implicancias del SAHOS entre los médicos y en la población general, lo que acrecentó la pesquisa de estos cuadros, se detectanconsiderables fallas en la aplicación de los tratamientos necesarios para revertir el cuadro y prevenir las consecuencias que se le atribuyen.

Many patients with confirmed diagnosis of moderate to severe Sleep Apnea don’t receive efective treatment. The objective of this study is to evaluate the use of specific therapeutic measures in those subjects and to detect the posible reasons of ineffective treatment.Methods: consecutive sample of patients who attended to our Sleep Lab between August and December of 2006 for a PSG because of symptoms of sleep apneas, which diagnosed moderate to severe SAS. During july of 2007 a telephonic survey was performed. Results:100 patients surveyed, 85 males, AHI 51.9±30.9ev/h, age 52,38±12.2, BMI 34.1±10.6. 47 patients don’t received any treatament. 52 began nCPAP therapy, but 12 discontinued it later. 2 subjects received surgical treatment. 90 patients had a BMI >25, 64p >30 and32p >35. 30 visited a nutricionist; 21 patients were able to lose weight, but only 3 lost more than 20% from baseline. Untreated patients presented a smaller AHI (p 0.02). Conclusions: Although there is more consciusness and awareness regarding SAS and its consecuences between physicians and general population, we detected considerable failures in the onset of necesary treatment to revert the symptoms and prevent itsconsequences.

Successful nCPAP (nasal Continuous Positive Airway Pressure) Treatment for a Disuse Syndrome Patient with SAS (Sleep Apnea Syndrome) / The Japanese Journal of Rehabilitation Medicine

The patient, a 72-year-old man, was admitted for disuse syndrome after left lower thigh cellulites, who originally developed left hemiparesis at age 60. At the time of admission, he was alert, his Body Mass Index was 18.5 and his FIM (Functional Independence Measure) score was 49. We thought this was a case of post stroke disuse syndrome manifesting after long-term bedridden inactivity. He underwent a hospital rehabilitation program; however, he gained only poor functional recovery after one month. He complained about nighttime snoring and awakening from sleep. So he was evaluated with a portable device for SAS (Sleep Apnea Syndrome). His ESS (Epworth Sleepiness Scale) was 21, his Apnea-Hypnea Index was 58.2 and his lowest SpO₂ level was 75%. With a diagnosis of severe SAS, he was treated with nighttime nCPAP (nasal Continuous Positive Airway Pressure). After treatment, his lowest SpO₂ level rose to 90%, and the patient's excessive daytime sleepiness (ESS=15) and ADL (FIM=85) improved. When patients exhibit poor recovery after training, the possibility of SAS should be taken into consideration and they should be tested accordingly.

The Risk Factors Affecting the QOL of OSAS Patients and the Influence of nCPAP Treatment on the QOL of OSAS Patients / 中国医师杂志

Objective To explore the risk factors affecting the quality of life (QOL) of patients with obstructive sleep apnea (OSAS) and the influence of nasal continual positive airway pressure (nCPAP) treatment on the QOL of OSAS patients. Methods Measuring the quality of life of 212 patients suffered from OSAS with WHOQOL-BREF and analyzing the influences of the sleepiness, quality of sleep, chronic disease and nCPAP treatment on the QOL of patients with OSAS. Results The scores on physical domain and psychological domain of patients who were sleepiness or had bad quality of sleep were less than that of patients who were non-sleepiness or had a good sleep respectively(P