Lung function and breathing regulation parameters during pregnancy

Kolarzyk, Emilia; Szot, Wojciech; Łyszczarz, Justyna

doi:10.1007/s00404-004-0691-1

Cited by 63 publications

(58 citation statements)

References 10 publications

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“…In this study and in studies in humans, increases in the rate of inspiration during pregnancy reflect an increased respiratory drive (Kolarzyk et al, 2005). In humans, at least, this increase in the rate of inspiration during pregnancy may be associated with overcoming increased respiratory system resistance (Kolarzyk et al, 2005) and/or may be linked with progesterone-associated changes in central chemosensitivity (Jensen et al, 2005). It is likely that lung compression during pregnancy in T. rugosa decreases lung compliance and an increase in the rate of inspiration may be an advantageous compensatory response.…”

Section: Breathing Patterns During Gestationsupporting

confidence: 57%

“…It is likely that an increase in the rate of inspiratory airflow would require increased respiratory muscle recruitment during inspiration and thus is likely to contribute to the increased energetic cost of breathing during gestation (Fig.8). In this study and in studies in humans, increases in the rate of inspiration during pregnancy reflect an increased respiratory drive (Kolarzyk et al, 2005). In humans, at least, this increase in the rate of inspiration during pregnancy may be associated with overcoming increased respiratory system resistance (Kolarzyk et al, 2005) and/or may be linked with progesterone-associated changes in central chemosensitivity (Jensen et al, 2005).…”

Section: Breathing Patterns During Gestationmentioning

confidence: 47%

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Gestation increases the energetic cost of breathing in the lizard, Tiliqua rugosa

Munns

2012

Journal of Experimental Biology

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SUMMARYHigh gestational loads result in fetuses that occupy a large proportion of the body cavity and may compress maternal organs. Compression of the lungs results in alterations in breathing patterns during gestation, which may affect the energetic cost of breathing. In this study, the energetic cost of breathing during gestation was determined in the viviparous skink Tiliqua rugosa. Radiographic imaging showed progressive lung compression during gestation and a 30% reduction in the lung inflation index (rib number at which the caudal margin of the lung was imaged divided by total rib number). Pneumotachography and open flow respirometry were used to measure breathing patterns and metabolic rates. Gestation induced a twofold increase in minute ventilation via increases in breathing frequency, but no change in inspired tidal volume. The rates of O 2 consumption and CO 2 production did not change significantly during gestation. Together, these results suggest that a relative hyperventilation occurs during gestation in T. rugosa, which in turn suggests that diffusion and/or perfusion limitations may exist at the lung during gestation. The energetic cost of breathing was estimated as a percentage of resting metabolic rate using hypercapnia to stimulate ventilation at different stages of pregnancy. The energetic cost of breathing in non-pregnant lizards was 19.96±3.85% of resting metabolic rate and increased threefold to 62.80±10.11% during late gestation. This significant increase in the energetic cost of breathing may have significant consequences for energy budgets during gestation.

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Section: Breathing Patterns During Gestationsupporting

confidence: 57%

Section: Breathing Patterns During Gestationmentioning

confidence: 47%

Gestation increases the energetic cost of breathing in the lizard, Tiliqua rugosa

Munns

2012

Journal of Experimental Biology

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“…Tidal volume, resting minute ventilation and airway conductance increase, while total pulmonary resistance reduces as a result of mechanical and functional factors, including the stimulatory effect of progesterone [4,5]. Moreover, in a patient with severe airflow obstruction a progression towards the development of chronic respiratory failure can be of major concern.…”

Section: Resultsmentioning

confidence: 99%

Pregnancy in a Woman with Williams-Campbell Syndrome: A Case Report

Censi¹,

Dalfior²,

Kaloudis³

et al. 2017

Crit Care Obst & Gyne

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“…In view of the factors that can influence the PEF such as sex, age, height, race and BMI [9,[16][17][18]. It is noted the importance of monitoring changes in pregnancy weight, since the progressive changes in the form and abdomen configuration, diaphragm and ribcage, besides increasing the size of the uterus and fetal growth could compromise pulmonary function during gestation [9,15,19].…”

Section: Introductionmentioning

confidence: 99%

Influence Of Number Of Pregnancies In Peak Expiratory Flow And Body Composition Of Pregnant Women

Santos

Souza²,

Tavares³

et al. 2017

int arch med

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Objectives: To describe and compare the mean values of the body composition and the peak expiratory flow (PEF) in primigravidae and multigravidae and, to determine its correlation with obstetric, anthropometric and body composition variables. Method:It was performed a cross-sectional study of 120 healthy pregnant women at low risk, including 77 primigravidae and 43 multigravidae. The PEF was measured by spirometry and the body composition by multisegmental electrical impedance. The unpaired t test was used to compare the groups and the Pearson correlation test was used to determine the association between PEF and independent variables. A multiple linear regression was used to estimate the relationship between the dependent variable, the PEF and the independent variables. Results: The body composition variables in multigravidae womenshowed higher values compared to the primigravidae, being statistically significant, except for fat mass. In primigravidae, the PEF was correlated significantly with maternal age and height. In multigravidae, the PEF was correlated with maternal age, height, pre-pregnancy and current weight, total body water, extracellular water, fat mass, lean mass and fat-free mass. A Multiple linear regression analysis showed that, in primigravidae, height and maternal age were associated with

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Lung function and breathing regulation parameters during pregnancy

Cited by 63 publications

References 10 publications

Gestation increases the energetic cost of breathing in the lizard, Tiliqua rugosa

Gestation increases the energetic cost of breathing in the lizard, Tiliqua rugosa

Pregnancy in a Woman with Williams-Campbell Syndrome: A Case Report

Influence Of Number Of Pregnancies In Peak Expiratory Flow And Body Composition Of Pregnant Women

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