Decreased Functional Residual Capacity: Causes & Reasons

Possible Causes for Decreased Functional Residual Capacity

Because awake MO patients already have severe alterations of their respiratory mechanics (10) (decreased chest wall and lung compliance, decreased functional residual capacity [journals.lww.com]

Inspiratory and expiratory reserve volumes are decreased, which leads to a lower functional residual capacity and vital capacity. [openanesthesia.org]

In general, compared with nonobese patients, functional residual capacity (FRC) is markedly decreased in MO patients, the alveolar-arterial oxygenation gradient is increased [journals.lww.com]

Pulmonary Contusion

Pulmonary contusion causes long-term respiratory dysfunction with decreased functional residual capacity. J Trauma. 1991;31:1203–8; discussion 1208–10. [link.springer.com]

residual capacity and decreasing hypoxemia. • Positive end expiratory pressure via mechanical ventilation (PEEP) or non – invasive positive pressure ventilation remains controversial [slideshare.net]

Prognosis • Most resolve 5 to 7 days after injury • Signs detectable by radiography are usually gone within 10 days after injury • Lung fibrosis with decreased functional [slideshare.net]

Flail Chest

functional residual capacity, J Trauma, 1991, vol. 31 (pg. 1203 - 1208 ) 9 Pulmonary function testing after operative stabilisation of the chest wall for flail chest, Eur [doi.org]

Pulmonary contusion causes long-term respiratory dysfunction with decreased functional residual capacity. Journal of Trauma. 1991;31(9):1203. 23. Battle CE, Evans PA. [jtojournal.com]

835 - 839 ) 7 Long-term disability after flail chest injury, J Trauma, 1984, vol. 24 (pg. 410 - 414 ) 8 Pulmonary contusion causes long-term respiratory dysfunction with decreased [doi.org]

Gupta Patton Syndrome

Arterial hypoxemia can occur very rapidly in such patients in view of the decreased functional residual capacity. [ncbi.nlm.nih.gov]

Hereditary Calcification of Joints and Arteries

[…] lung capacity and functional residual capacity, type 2 diabetes mellitus (i.e., hyperinsulinemia and insulin resistance), osteoarthritis, hyperuricemia, gout, gastroesophageal [quizlet.com]

[…] d Rationale: Health risks associated with obesity include cardiovascular disease (related to increased low-density lipoprotein levels, increased triglyceride levels, and decreased [quizlet.com]

[…] high-density lipoprotein levels), hypertension, sleep apnea, obesity hypoventilation syndrome, reduced chest wall compliance, increased work of breathing, decreased total [quizlet.com]

Extrapulmonary Alveolar Hypoventilation

Sv O 2 • Decreased diffusion Widening alveolar-arterial gradient Decreased functional residual capacity Increased work of breathing Interstitial fibrosis Worsening hypercarbia [clinicalgate.com]

Increased work of breathing occurs as a result of increased airway resistance, decreased functional residual capacity (FRC), and decreased lung compliance secondary to atelectasis [clinicalgate.com]

[…] and hypoxemia Increased dead space ventilation Lactic acidosis (related to aerobic metabolism) Alteration in perfusion: • Increased heart rate • Decreased blood pressure [clinicalgate.com]

Laceration of the Lung

Kishikawa M, Yoshioka T, Shimazu T (1991) Pulmonary contusion causes long-term respiratory dysfunction with decreased functional residual capacity. [link.springer.com]

Pulmonary contusion causes long-term respiratory dysfunction with decreased functional residual capacity. J Trauma. 1991;31:1203-8. [ Links ] 58. [scielo.org.co]

residual capacity for as long as six years after the injury.[38] As late as four years post-injury, decreased functional residual capacity has been found in most pulmonary [en.wikipedia.org]

Kyphoscoliosis

Patients with scoliosis suffer from restrictive lung disease which decreases vital capacity, functional residual capacity, tidal volume, and increased respiratory rate. [4 [joacp.org]

Functional residual capacity (FRC) is decreased. [pgblazer.com]

[…] vital capacity, functional residual capacity, tidal volume, and increased respiratory rate.[1],[6] The severity of pulmonary impairment depends on the degree of the Cobb's [mjdrdypu.org]

Intratracheal Intubation

Conversely, in patients with low Sa O 2 and in those who have high O 2 consumption (e.g., children, women in labor, morbidly obese patients) or decreased functional residual [clinicalgate.com]

Intubation in the ramped position has been hypothesized to prevent hypoxemia by increasing functional residual capacity and decreasing the duration of intubation, but has [ncbi.nlm.nih.gov]

capacity (FRC), oxyhemoglobin desaturation may occur faster. [clinicalgate.com]

Fetal Trauma

functional residual capacity by 20% 7 -Gravid uterus => Increased intra-abdominal pressure => Decreased Chest wall compliance -Increased progesterone levels => Decreased [emdocs.net]

functional residual capacity, high BMI, laryngeal edema, etc. may increase difficulty during perioperative management, while decreasing the "safe apnea interval" and the [joacc.com]

However, functional residual capacity is decreased as a direct effect of the elevated diaphragm. 13 These changes result in a physiologic respiratory alkalosis in the pregnant [ahcmedia.com]

Pulmonary Bullous Emphysema

There will be an increase in total lung capacity, residual volume, and functional residual capacity, as well as a decrease in vital capacity. [ncbi.nlm.nih.gov]

Forced expiratory volume in one second (FEV1)/forced vital capacity (FVC) ratios will typically be <0.7. FVC decreases because of loss of elastic recoil of the lung. [ncbi.nlm.nih.gov]

Diaphragm Disorder

Functional residual capacity (FRC) is normal or decreased, depending on how much respiratory system compliance is altered. [clinicalgate.com]

There is lowered:- forced expiratory volume in 1 second (FEV1) forced vital capacity (FVC) functional residual capacity (FRC) expiratory reserve volume (ERV) residual volume [news-medical.net]

[…] changes with decreases in TLC, vital capacity (VC), and FRC but without changes in residual volume (RV). 5,6 The severity of compression is directly related to the degree [archbronconeumol.org]

Hypercapnic Respiratory Failure

Desaturating patients spent a greater proportion of REM time hypopneic (53 +/- 5 vs. 28 +/- 5%, P less than 0.01) and had a greater decrease in functional residual capacity [jap.physiology.org]

PubMed PubMed Central Google Scholar Hudgel DW, Devadatta P: Decrease in functional residual capacity during sleep in normal humans. J Appl Physiol. 1984, 57: 1319-1322. [respiratory-research.biomedcentral.com]

Renal Lithotripsy

Vital capacity Decreased Functional residual capacity Decreased Tidal volume Increased Respiratory rate 16. • Newer lithotripters no need of water bath. • universal table [slideshare.net]

Lithotripsy Cardiovascular Increased Central blood volume Increased Central venous pressure Increased Pulmonary artery pressure Respiratory Increased Pulmonary blood flow Decreased [slideshare.net]

Breast Contusion

Pulmonary contusion causes long-term respiratory dysfunction with decreased functional residual capacity. J Trauma. 1991;31:1203-8. [ Links ] 58. [scielo.org.co]

Blast Lung

Pulmonary contusion causes long-term respiratory dysfunction with decreased functional residual capacity. J Trauma. 1991;31:1203-8. [ Links ] 58. [scielo.org.co]

residual capacity for as long as six years after the injury. [38] As late as four years post-injury, decreased functional residual capacity has been found in most pulmonary [ipfs.io]

[…] interfere with an individual's ability to return to work. [24] Fibrosis of the lungs can occur, resulting in dyspnea (shortness of breath), low blood oxygenation, and reduced functional [ipfs.io]

Persistent Fetal Circulation

Pulmonary hypertension can be exacerbated by lung underinflation (pulmonary vascular resistance increases as lung volumes decrease below functional residual capacity), cytokine [clinicaladvisor.com]

Thus, the first goal should be to optimize lung recruitment (remember that pulmonary vascular resistance increases above and below functional residual capacity (FRC)). [clinicaladvisor.com]

In these conditions, pulmonary hypertension can be exacerbated by lung underinflation (pulmonary vascular resistance increases as lung volumes decrease below functional residual [clinicaladvisor.com]

Decreased Lung Compliance

In COPD, the lungs ability to collapse is decreased. The chest wall naturally expands, resulting in a barrel chest and an increased functional residual capacity (FRC). [aippg.net]

100º, the deformity is considered severe and the risk of respiratory failure, alveolar hypoventilation, and cor pulmonale is very high. 4 Kyphoscoliosis is expressed in functional [archbronconeumol.org]

Decreased Diffusion Capacity of the Lung

On the other hand, the chest-wall distensibility decreases, so that there is a slight increase in the functional residual capacity. [medicine.jrank.org]

These changes cause an increase in residual volume and decreases in FEV1/FVC, vital capacity, and DLCO in terms of pulmonary function. [ci.nii.ac.jp]

The volume of gas contained in the lungs at the end of an unforced, relaxed expiration is called the functional residual capacity (FRC). [medicine.jrank.org]

Myasthenic Crisis

functional residual capacity, and resulting in atelectasis. [journals.lww.com]

[…] assessment and management in MC An MC affects both inspiratory and expiratory respiratory muscles. 25 During an MC, respiratory muscles cannot maintain adequate tidal volume, decreasing [journals.lww.com]

Ventilation becomes rapid and shallow, decreasing pulmonary functional residual capacity, resulting in atelectasis, closing a vicious circle that increases work of breathing [scielo.br]

Pulmonary Alveolar Proteinosis

Pulmonary function tests show reduction in diffusing capacity for carbon monoxide (DLCO) that is disproportionate to the decreases in vital capacity, residual volume, functional [merckmanuals.com]

Mechanical Ventilation

Neonates are vulnerable to impaired gas exchange, a common occurrence in this population, because of their high metabolic rate, decreased functional residual capacity, decreased [pedsinreview.aappublications.org]

functional residual capacity (FRC) and arterial oxygenation. [ccforum.biomedcentral.com]

PEEP therapy can be effective when used in patients with a diffuse lung disease that results in an acute decrease in functional residual capacity (FRC), which is the volume [emedicine.com]

Pleuroparenchymal Fibroelastosis

Concerning pulmonary function, a restrictive outcome with decreased forced vital capacity (FVC), total lung capacity (TLC), and carbon monoxide diffusion capacity are the [ncbi.nlm.nih.gov]

In addition, residual volume (RV) may be within the reference range. [ncbi.nlm.nih.gov]

Respiratory Muscle Paralysis

Lung function test in neuromuscular patient shows a restrictive pattern: total lung capacity (TLC) and vital capacity (VC) reduced while functional residual capacity (FRC) [shortnessofbreath.it]

Lung function test in neuromuscular patient shows a restrictive pattern: total lung capacity and vital capacity reduced while functional residual capacity maintained or even [shortnessofbreath.it]

Primary Apnea

[…] in functional residual capacity. [passeidireto.com]

Paradoxical chest movement may predispose the baby to apnea by decreasing functional residual capacity (FRC) and limiting oxygenation. [22] Chemoreceptors and mechanoreceptors [emedicine.com]

[…] wall movements are common during active sleep in infants and may cause a fall in arterial oxygen saturation because of ventilation or perfusion defects associated with a decrease [passeidireto.com]

Spondylitis

When Ankylosing Spondylitis results in restricted chest wall motion, pulmonary function studies show decreased vital capacity and increased functional residual capacity. [veterans.gc.ca]

Neonatal Respiratory Distress Syndrome

Surfactant deficiency → little or no reduction of alveolar surface tension → reduced pulmonary unfolding → atelectasis → decreased lung compliance and functional residual [amboss.com]

capacity → hypoxemia and hypercapnia References: [1] [3] Clinical features History of premature birth Onset of symptoms: usually manifests immediately after birth Signs of [amboss.com]

residual capacity, and oxygenation Reduces incidence of air leaks Decreases mortality 31. [slideshare.net]

Acroosteolysis-Keloid-Like Lesions-Premature Aging Syndrome

decrease in timed vital capacity and forced expiratory flow, an early decrease in diffusion, and an increase in functional residual volume what is the significance of plasma [quizlet.com]

Hyperactive Airway Disease

residual capacity. [womenshealthsection.com]

As pregnancy progresses, typical changes in respiratory physiology include an increased respiratory rate and a decrease in diaphragmatic excursion with a decrease in functional [womenshealthsection.com]

Adhesion of Amnion to Fetus

Respiratory Decreased residual volume (RV), functional residual capacity (FRC), and total lung capacity (TLC) Diaphragm rises due to pressure from uterus Due to ↓ FRC, maternal [pathophys.org]