Importance of Respiratory Rate as an Indicator of Respiratory Dysfunction in Patients with Cystic Fibrosis

Browning, Iley; D’Alonzo, Gilbert E.; Tobin, Martin J.

doi:10.1378/chest.97.6.1317

Cited by 33 publications

(25 citation statements)

References 22 publications

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“…The Z-scores were positively correlated with age (r = + 0.67, p < 0.05), suggesting RR provided an indication of decreasing lung function associated with increasing age. No significant relationship between FEVj o and RR was observed in the present smdy, in contrast to the findings of Browning, D'Alonzo and Tobin (1990). They also found correlations between RR and arterial oxygenation and hyperinflation.…”

Section: Cystic Fibrosiscontrasting

confidence: 95%

“…No such change was observed in female subjects. Browning, D'Alonzo and Tobin (1990) found TJ TTOT was similar in adult patients with CF conpared to controls. They did however find increased mean inspiratory flow values (VT/ T^ and rib cage asynchrony in the patients witii CF.…”

Section: Studies Of Respiratory Timing In Subjects With Respiratory Dmentioning

confidence: 89%

“…In cystic fibrosis, respiratory rate has been found to correlate with airway obstruction, hyperinflation, reduced arterial oxygenation and rib cage-abdominal incoordination (Browning, D'Alonzo and Tobin, 1990). Respiratory rate has been found to be a good predictor of weaning outcome in mechanically ventilated patients.…”

Section: Background To Thesismentioning

confidence: 99%

“…The poor reputation of respiratory rate as a clinical sign may be partly due to inaccuracy in its measurement (Browning, D'Alonzo and Tobin, 1990). …”

Section: Background To Thesismentioning

confidence: 99%

“…Stimulation of pulmonary sensory receptors, probably via die vagus nerve, by excessive lung inflammation and mucus production may be responsible for the elevated RR in CF (Browning, D'Alonzo and Tobin, 1990). Hypainflation, where breathing occurs on the upper, less compUant portion of the pulmonary pressure-volume curve, may act as an elastic load which also predisposes to tachypnoea.…”

Section: Cystic Fibrosismentioning

confidence: 99%

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Analysis of respiratory rate and the respiratory cycle in infants and children using an optical sensor

Herbert¹

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Section: Cystic Fibrosiscontrasting

confidence: 95%

Section: Studies Of Respiratory Timing In Subjects With Respiratory Dmentioning

confidence: 89%

Section: Background To Thesismentioning

confidence: 99%

“…The poor reputation of respiratory rate as a clinical sign may be partly due to inaccuracy in its measurement (Browning, D'Alonzo and Tobin, 1990). …”

Section: Background To Thesismentioning

confidence: 99%

Section: Cystic Fibrosismentioning

confidence: 99%

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Analysis of respiratory rate and the respiratory cycle in infants and children using an optical sensor

Herbert¹

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Lung function in 3–5‐year‐old children with cystic fibrosis

Mayer

Jawad

McDonough

et al. 2008

Pediatric Pulmonology

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It is well established that the lung disease of CF can occur early in life and may progress through the preschool years when accurate lung function assessment has been challenging to perform. We hypothesized that respiratory inductive plethysmography (RIP) and spirometry could be effectively performed in 3-6-year-old children and could be used to assess both longitudinal changes in lung function and the acute changes that occur during exacerbation of pulmonary disease. Both RIP and spirometry were equally feasible; however, the success rate for spirometry gradually increased with age to become higher than that for RIP in the 6-year-old subjects. Forty-four subjects were studied longitudinally and demonstrated significant increases in FVC, FEV(1), and FEV(0.5), but not in FEF(25-75) or RIP variables. There were significant differences in FVC, FEV(1), and phase angle (a measure of thoracoabdominal asynchrony) during exacerbations of lung disease. Although both RIP and spirometry were able to show differences in lung function in subjects with acute clinical worsening, spirometry was more robust in demonstrating change in lung function longitudinally and in children who had an exacerbation of lung disease.

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