Ventilation Perfusion Relationships Following Correction of Kyphoscoliosis

Shannon, Daniel C.; Riseborough, Edward J.; Kazemi, Homayoun

doi:10.1001/jama.1971.03190050037007

Cited by 21 publications

(10 citation statements)

References 9 publications

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“…1-3) and certainly not to the de gree that is seen in patients with chronic ob structive airway disease with similar delays in the clearance of xenon-133 [Alderson et al, 1974|. Discussion There are a number of reports of pul monary function tests in patients with ky phoscoliosis [Chapman et al, 1939: Hanley et al, 1958Bergojsky et al, 1959;Naeye, Bruderman and Stein, 1961;Gucker, 1962) but only four that we can find on the regional distribution of ventilation and blood flow |Bjure and Nachemson, 1973;Dollery et al, 1965;Shannon et at., 1971;Bake et al, 1972). In each of these, the in vestigators used either multiple fixed detec tors or moving probes to determine the dis tribution of ventilation and blood flow.…”

Section: Resultsmentioning

confidence: 80%

“…They did not comment on the relationship between the position of the major curvature and any re gional changes. Shannon et al [1971) studied 13 pa-tients before and after surgical correction of the spina! deformity.…”

Section: Resultsmentioning

confidence: 99%

“…In none of the earlier studies was the whole of the washout procedure used as an indication of regional ventilation. Dollery et al [1965] and Shannon et al [1971] used the distribution of a single breath to the distribution of lung volume as their indication of ventilation, while Bjure et al [1973] and Bake et al [1972] made use of the first minute of the washout only. These latter workers recognized that in doing this, a region with a low ventilation to lung volume would be missed.…”

Section: Resultsmentioning

confidence: 99%

“…Previous studies of regional ventilation and blood flow in patients with kyphosco liosis used either multiple fixed or moving probes to detect the changes in radioactivity [Bjure and Nachemson, 1973;Dollery et al, 1965;Shannon et al, 1971;Bake et al, 19721. Furthermore, regional ventilation was measured using ventilation indices with little attention being paid to the latter parts of a washout procedure.…”

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confidence: 99%

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Observations on Regional Ventilation and Perfusion in Kyphoscoliosis

Seeker-Walker¹,

Ho²,

Gill³

1979

Respiration

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Studies of regional ventilation and perfusion have been made in 10 patients with kyphoscoliosis. In 7 of the 10 patients ventilation was more severely impaired in the region of the maximum convexity than in the opposite lung. Perfusion was not impaired to the same degree. The resulting locally diminished ventilation-perfusion ratios may account for the hypoxemia and increased PA-ao₂ gradient seen in patients with kyphoscoliosis. It is suggested that the local distortion of the chest wall, with the splayed out ribs, may account for the local change in lung mechanics.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Observations on Regional Ventilation and Perfusion in Kyphoscoliosis

Seeker-Walker¹,

Ho²,

Gill³

1979

Respiration

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“…Diese negativen Korrelationen zwischen Grad Cobb und Vitalkapazität sowie Totalkapazi tät wurden kausal interpretiert, d.h., das Ausmass der Lungenfunktionsbeeinträchti gung wurde als durch den Deformationsgrad bestimmt angesehen. Nun wird aber ziem lich einhellig berichtet, dass die operative Verkleinerung des Skoliosewinkels auf die Lungenfunktion keinen entscheidenden Ein fluss hat [8,11,19]. Hingegen ist eine Ver besserung durch konsequente konservative atemgymnastische Therapie möglich [18] …”

Section: Introductionunclassified

Die Beziehung von Deformationsgrad und Lungenfunktionseinschränkung bei Skoliosepatienten

Haber¹,

Kummer²,

Lukeschitsch³

et al. 1982

Respiration

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In 50 female patients (age: 16.2 + 5.1 years) with idiopathic scoliosis (COBB: 67 ± 21°) 40 variables of lung function and spiroergometry as well as of scoliosis were investigated by means of factor analysis, Nine factors were found the variables of which correlated significantly with each other also after eliminating the influence of all other variables. The relations between the first three factors were not plausible and therefore they were not subjected to interpretation. Another three factors yielded relations well known in the field of clinical respiratory physiology and sport medicine, e. g. the positive correlation between arterial pO₂ during physical work and pulmonary diffusion capacity, or the negative correlation between resting heart rate and maximal aerobic capacity. In the last three factors essential new results were found: (1) The maximal aerobic capacity does not correlate with the reduced actual values for vital capacity or total capacity but with the antropometric data. (2) There is no causal dependence between the degree of scoliosis and any of the lung function or spiroergometric parameters.Conclusions: (1) From the degree of scoliosis one cannot draw conclusions about the quality of lung function. The often described significance of the negative, direct, single linear correlation between degrees Cobb and vital capacity may be interpreted only as an expression of simultaneity, not of causality. (2) In spite of the often abnormal mechanics of thorax and lungs, the respiration in scoliotic patients, functions as in healthy subjects considering the oxygenization of the blood and the supply of O₂ to the organism during rest and exercise. Therefore, a reduced aerobic capacity is not the consequence of scoliosis in most patients, but the consequence of keeping away the patients from school sports and other sport activities. This leads to a chronic lack of physical training and a bad physical state of respiration, circulation and aerobic muscle metabolism.

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Therapeutic Positioning, Wheelchair Seating, and Pulmonary Function of Children with Cerebral Palsy: A Research Synthesis

Barks¹

2004

Rehabilitation Nursing

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This review analyzed research literature concerning pulmonary function and positioning of persons with cerebral palsy (CP) who lack trunk control. The search reviewed literature published from 1966 through March 2003. Twenty-eight references located by electronic database search were analyzed using Moody's Research Analysis Tool. All reflected either a physiologic or therapy-based model involving function in activities of daily living, but no health outcomes. One reference applied a nursing model to care of developmentally disabled persons, including those with CP. Existing research gaps include the need for human subjects, larger sample sizes, measurement of influence of gravity on body position, greater precision in describing independent variables of positioning, and participation by children with disabilities. This paper proposes a conceptual model using Orem's self-care theory upon which to base nursing interventions, including therapeutic positioning of persons with CP who lack trunk control. Future nursing research should explore health outcomes of various properties of wheelchair positioning.

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Ventilation Perfusion Relationships Following Correction of Kyphoscoliosis

Cited by 21 publications

References 9 publications

Observations on Regional Ventilation and Perfusion in Kyphoscoliosis

Observations on Regional Ventilation and Perfusion in Kyphoscoliosis

Die Beziehung von Deformationsgrad und Lungenfunktionseinschränkung bei Skoliosepatienten

Therapeutic Positioning, Wheelchair Seating, and Pulmonary Function of Children with Cerebral Palsy: A Research Synthesis

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