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American Journal of Respiratory and... Oct 2019Spirometry is the most common pulmonary function test. It is widely used in the assessment of lung function to provide objective information used in the diagnosis of...
Spirometry is the most common pulmonary function test. It is widely used in the assessment of lung function to provide objective information used in the diagnosis of lung diseases and monitoring lung health. In 2005, the American Thoracic Society and the European Respiratory Society jointly adopted technical standards for conducting spirometry. Improvements in instrumentation and computational capabilities, together with new research studies and enhanced quality assurance approaches, have led to the need to update the 2005 technical standards for spirometry to take full advantage of current technical capabilities. This spirometry technical standards document was developed by an international joint task force, appointed by the American Thoracic Society and the European Respiratory Society, with expertise in conducting and analyzing pulmonary function tests, laboratory quality assurance, and developing international standards. A comprehensive review of published evidence was performed. A patient survey was developed to capture patients' experiences. Revisions to the 2005 technical standards for spirometry were made, including the addition of factors that were not previously considered. Evidence to support the revisions was cited when applicable. The experience and expertise of task force members were used to develop recommended best practices. Standards and consensus recommendations are presented for manufacturers, clinicians, operators, and researchers with the aims of increasing the accuracy, precision, and quality of spirometric measurements and improving the patient experience. A comprehensive guide to aid in the implementation of these standards was developed as an online supplement.
Topics: Advisory Committees; Europe; Humans; Lung Diseases; Practice Guidelines as Topic; Respiratory Function Tests; Societies, Medical; Spirometry; United States
PubMed: 31613151
DOI: 10.1164/rccm.201908-1590ST -
American Family Physician Mar 2020High-quality, office-based spirometry provides diagnostic information as useful and reliable as testing performed in a pulmonary function laboratory. Spirometry may be... (Review)
Review
High-quality, office-based spirometry provides diagnostic information as useful and reliable as testing performed in a pulmonary function laboratory. Spirometry may be used to monitor progression of lung disease and response to therapy. A stepwise approach to spirometry allows for ease and reliability of interpretation. Airway obstruction is suspected when there is a decreased forced expiratory volume in one second/forced vital capacity (FEV1/FVC) ratio, but there is no strong evidence to clearly define what constitutes a significant decrease in this ratio. A low FVC is defined as a value below the 5th percentile in adults or less than 80% of predicted in children and adolescents five to 18 years of age. The FEV1/FVC ratio and FVC are used together to identify obstructive defects and restrictive or mixed patterns. Obstructive defects should be assessed for reversibility, as indicated by an improvement of the FEV1 or FVC by at least 12% and 0.2 L in adults, or by more than 12% in children and adolescents five to 18 years of age after the administration of a short-acting bronchodilator. FEV1 is used to determine the severity of obstructive and restrictive disease, although the values were arbitrarily determined and are not based on evidence from patient outcomes. Bronchoprovocation testing may be used if spirometry results are normal and allergen- or exercise-induced asthma is suspected. For patients with an FEV1 less than 70% of predicted, a therapeutic trial of a short-acting bronchodilator may be tried instead of bronchoprovocation testing.
Topics: Forced Expiratory Volume; Humans; Lung; Lung Diseases; Reproducibility of Results; Spirometry
PubMed: 32163256
DOI: No ID Found -
The European Respiratory Journal Aug 2005
Topics: Humans; Maximal Voluntary Ventilation; Peak Expiratory Flow Rate; Spirometry; Vital Capacity
PubMed: 16055882
DOI: 10.1183/09031936.05.00034805 -
Respiratory Care Mar 2018Incentive spirometry (IS) is commonly prescribed to reduce pulmonary complications, despite limited evidence to support its benefits and a lack of consensus on optimal... (Review)
Review
Incentive spirometry (IS) is commonly prescribed to reduce pulmonary complications, despite limited evidence to support its benefits and a lack of consensus on optimal protocols for its use. Although numerous studies and meta-analyses have examined the effects of IS on patient outcomes, there is no clear evidence establishing its benefit to prevent postoperative pulmonary complications. Clinical practice guidelines advise against the routine use of IS in postoperative care. Until evidence of benefit from well-designed clinical trials becomes available, the routine use of IS in postoperative care is not supported by high levels of evidence.
Topics: Humans; Lung Diseases; Postoperative Care; Postoperative Complications; Practice Guidelines as Topic; Spirometry
PubMed: 29279365
DOI: 10.4187/respcare.05679 -
The European Respiratory Journal Dec 2012The aim of the Task Force was to derive continuous prediction equations and their lower limits of normal for spirometric indices, which are applicable globally. Over...
The aim of the Task Force was to derive continuous prediction equations and their lower limits of normal for spirometric indices, which are applicable globally. Over 160,000 data points from 72 centres in 33 countries were shared with the European Respiratory Society Global Lung Function Initiative. Eliminating data that could not be used (mostly missing ethnic group, some outliers) left 97,759 records of healthy nonsmokers (55.3% females) aged 2.5-95 yrs. Lung function data were collated and prediction equations derived using the LMS method, which allows simultaneous modelling of the mean (mu), the coefficient of variation (sigma) and skewness (lambda) of a distribution family. After discarding 23,572 records, mostly because they could not be combined with other ethnic or geographic groups, reference equations were derived for healthy individuals aged 3-95 yrs for Caucasians (n=57,395), African-Americans (n=3,545), and North (n=4,992) and South East Asians (n=8,255). Forced expiratory value in 1 s (FEV(1)) and forced vital capacity (FVC) between ethnic groups differed proportionally from that in Caucasians, such that FEV(1)/FVC remained virtually independent of ethnic group. For individuals not represented by these four groups, or of mixed ethnic origins, a composite equation taken as the average of the above equations is provided to facilitate interpretation until a more appropriate solution is developed. Spirometric prediction equations for the 3-95-age range are now available that include appropriate age-dependent lower limits of normal. They can be applied globally to different ethnic groups. Additional data from the Indian subcontinent and Arabic, Polynesian and Latin American countries, as well as Africa will further improve these equations in the future.
Topics: Adolescent; Adult; Age Factors; Aged; Aged, 80 and over; Child; Child, Preschool; Ethnicity; Female; Forced Expiratory Volume; Global Health; Humans; Lung; Male; Middle Aged; Models, Statistical; Pulmonary Medicine; Quality Control; Reference Values; Spirometry; Vital Capacity
PubMed: 22743675
DOI: 10.1183/09031936.00080312 -
Respiration; International Review of... 2021Currently, consensus on the effectiveness of incentive spirometry (IS) following cardiac, thoracic, and upper abdominal surgery has been based on randomized controlled... (Meta-Analysis)
Meta-Analysis
Use of Incentive Spirometry in Adults following Cardiac, Thoracic, and Upper Abdominal Surgery to Prevent Post-Operative Pulmonary Complications: A Systematic Review and Meta-Analysis.
BACKGROUND
Currently, consensus on the effectiveness of incentive spirometry (IS) following cardiac, thoracic, and upper abdominal surgery has been based on randomized controlled trials (RCTs) and systematic reviews of lower methodological quality. To improve the quality of the research and to account for the effects of IS following thoracic surgery, in addition to cardiac and upper abdominal surgery, we performed a meta-analysis with thorough application of the Grading of Recommendations Assessment, Development and Evaluation scoring system and extensive reference to the Cochrane Handbook for Systematic Reviews of Interventions.
OBJECTIVE
The objective of this study was to determine, with rigorous methodology, whether IS for adult patients (18 years of age or older) undergoing cardiac, thoracic, or upper abdominal surgery significantly reduces30-day post-operative pulmonary complications (PPCs), 30-day mortality, and length of hospital stay (LHS) when compared to other rehabilitation strategies.
METHODS
The literature was searched using Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, CINAHL, and Web of Science for RCTs between the databases' inception and March 2019. A random-effect model was selected to calculate risk ratios (RRs) with 95% confidence intervals (CIs).
RESULTS
Thirty-one RCTs involving 3,776 adults undergoing cardiac, thoracic, or upper abdominal surgery were included. By comparing the use of IS to other chest rehabilitation strategies, we found that IS alone did not significantly reduce 30-day PPCs (RR = 1.00, 95% CI: 0.88-1.13) or 30-day mortality (RR = 0.73, 95% CI: 0.42-1.25). Likewise, there was no difference in LHS (mean difference = -0.17,95% CI: -0.65 to 0.30) between IS and the other rehabilitation strategies. None of the included trials significantly impacted the sensitivity analysis and publication bias was not detected.
CONCLUSIONS
This meta-analysis showed that IS alone likely results in little to no reduction in the number of adult patients with PPCs, in mortality, or in the LHS, following cardiac, thoracic, and upper abdominal surgery.
Topics: Abdomen; Adolescent; Adult; Humans; Length of Stay; Motivation; Postoperative Complications; Respiratory Therapy; Spirometry
PubMed: 34274935
DOI: 10.1159/000517012 -
Trials Dec 2019An incentive spirometer (IS) is a mechanical device that promotes lung expansion. It is commonly used to prevent postoperative lung atelectasis and decrease pulmonary... (Randomized Controlled Trial)
Randomized Controlled Trial
BACKGROUND
An incentive spirometer (IS) is a mechanical device that promotes lung expansion. It is commonly used to prevent postoperative lung atelectasis and decrease pulmonary complications after cardiac, lung, or abdominal surgery. This study explored its effect on lung function and pulmonary complication rates in patients with rib fractures.
METHODS
Between June 2014 and May 2017, 50 adult patients with traumatic rib fractures were prospectively investigated. Patients who were unconscious, had a history of chronic obstructive pulmonary disease or asthma, or an Injury Severity Score (ISS) ≥ 16 were excluded. Patients were randomly divided into a study group (n = 24), who underwent IS therapy, and a control group (n = 26). All patients received the same analgesic protocol. Chest X-rays and pulmonary function tests (PFTs) were performed on the 5th and 7th days after trauma.
RESULTS
The groups were considered demographically homogeneous. The mean age was 55.2 years and 68% were male. Mean pretreatment ISSs and mean number of ribs fractured were not significantly different (8.23 vs. 8.08 and 4 vs. 4, respectively). Of 50 patients, 28 (56%) developed pulmonary complications, which were more prevalent in the control group (80.7% vs. 29.2%; p = 0.001). Altogether, 25 patients had delayed hemothorax, which was more prevalent in the control group (69.2% vs. 29.2%; p = 0.005). Two patients in the control group developed atelectasis, one patient developed pneumothorax, and five patients required thoracostomy. PFT results showed decreased forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV) in the control group. Comparing pre- and posttreatment FVC and FEV, the study group had significantly greater improvements (p < 0.001).
CONCLUSIONS
In conclusion, the use of an IS reduced pulmonary complications and improved PFT results in patients with rib fractures. The IS is a cost-effective device for patients with rib fractures and its use has clinical benefits without harmful effects.
TRIAL REGISTRATION
ClinicalTrials.gov, NCT04006587. Registered on 3 July 2019.
Topics: Adolescent; Adult; Aged; Aged, 80 and over; Female; Forced Expiratory Volume; Hemothorax; Humans; Length of Stay; Lung; Male; Middle Aged; Pneumothorax; Prospective Studies; Pulmonary Atelectasis; Rib Fractures; Spirometry; Thoracotomy; Treatment Outcome; Vital Capacity; Young Adult
PubMed: 31888765
DOI: 10.1186/s13063-019-3943-x -
Indian Journal of Pediatrics Aug 2023Lung function testing is an essential modality of investigation in children as it provides objective evidence of lung disease/health. With advances in technology,... (Review)
Review
Lung function testing is an essential modality of investigation in children as it provides objective evidence of lung disease/health. With advances in technology, various tests are available that can aid in the diagnosis of lung disease, assess the progression and response to therapy and document the lung development and evolving lung diseases in infants. This narrative review discusses lung function tests in infants and children. Currently, lung function tests can be performed in every age group, from neonates to the elderly. Spirometry and peak expiratory flow rate (PEFR) are the most employed tests in children more than six years of age. Spirometry helps diagnose and monitoring of both obstructive and restrictive diseases. There is a need for expertise to perform and interpret spirometry correctly. The forced oscillation technique (FOT) or impulse oscillometry (IOS) is done with tidal volume breathing and is feasible even in preschool children. Their utility is mainly restricted to asthma in children at present. Lung function tests can be performed in neonates, infants and children using infant pulmonary function test (PFT) equipment, although their availability is limited. Diffusion capacity for carbon monoxide (DLCO) is a valuable tool in restrictive lung diseases. Lung volumes can be assessed by body plethysmography and multiple washout technique. The latter can also assess lung clearance index. It is essential to perform and interpret the lung function test results correctly and correlate them with the clinical condition for optimum treatment and outcome.
Topics: Child, Preschool; Infant, Newborn; Infant; Humans; Aged; Oscillometry; Respiratory Function Tests; Lung; Asthma; Spirometry; Forced Expiratory Volume
PubMed: 37261706
DOI: 10.1007/s12098-023-04588-8 -
The Journal of Asthma : Official... Jun 2023Lung function testing is used in diagnosing asthma and assessing asthma control. Spirometry is most commonly used, but younger children can find performing this test...
OBJECTIVE
Lung function testing is used in diagnosing asthma and assessing asthma control. Spirometry is most commonly used, but younger children can find performing this test challenging. Non-volitional tests such as airwave oscillometry (AOS) may be helpful in that population. We compared the success of spirometry and AOS in assessing bronchodilator responsiveness in children.
METHODS
AOS was conducted alongside routine lung function testing. Resistance at 5 Hz (R5), the difference between the resistance at 5 and 20 Hz (R5-20) and the area under the reactance curve (AX) were assessed. Patients between 5 and 16 years old attending clinic with wheeze or asthma were assessed. Patients performed AOS, followed by spirometry and were then given 400 µg salbutamol; the tests were repeated 15 minutes later.
RESULTS
Lung function testing was performed in 47 children of whom 46 (98%) and 32 (68%) performed acceptable baseline oscillometry and spirometry, respectively ( < 0.001). Children unable to perform acceptable spirometry were younger (7.35, range: 5.4-10.3 years) than those who could (10.4, range: 5.5-16.9 years), < 0.001. The baseline z-scores of AOS R5 correlated with FEV ( = 0.499, = 0.004), FEF ( = 0.617, < 0.001), and FEV/FVC ( = 0.618, < 0.001). There was a positive bronchodilator response assessed by spirometry (change in FEV ≥ 12%) in eight children which corresponded to a change in R5 of 36% (range: 30%-50%) and a change in X5 of 39% (range: 15%-54%).
CONCLUSIONS
Oscillometry is a useful adjunct to spirometry in assessing young asthmatic children's lung function. The degree of airway obstruction, however, might affect the comparability of the results of the two techniques.
Topics: Humans; Child; Child, Preschool; Adolescent; Asthma; Bronchodilator Agents; Oscillometry; Forced Expiratory Volume; Spirometry
PubMed: 36218195
DOI: 10.1080/02770903.2022.2134795 -
Respiratory Care Oct 2011We searched the MEDLINE, CINAHL, and Cochrane Library databases for articles published between January 1995 and April 2011. The update of this clinical practice...
We searched the MEDLINE, CINAHL, and Cochrane Library databases for articles published between January 1995 and April 2011. The update of this clinical practice guideline is the result of reviewing a total of 54 clinical trials and systematic reviews on incentive spirometry. The following recommendations are made following the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) scoring system. 1: Incentive spirometry alone is not recommended for routine use in the preoperative and postoperative setting to prevent postoperative pulmonary complications. 2: It is recommended that incentive spirometry be used with deep breathing techniques, directed coughing, early mobilization, and optimal analgesia to prevent postoperative pulmonary complications. 3: It is suggested that deep breathing exercises provide the same benefit as incentive spirometry in the preoperative and postoperative setting to prevent postoperative pulmonary complications. 4: Routine use of incentive spirometry to prevent atelectasis in patients after upper-abdominal surgery is not recommended. 5: Routine use of incentive spirometry to prevent atelectasis after coronary artery bypass graft surgery is not recommended. 6: It is suggested that a volume-oriented device be selected as an incentive spirometry device.
Topics: Contraindications; Equipment Design; Humans; Monitoring, Physiologic; Pulmonary Atelectasis; Spirometry; Work of Breathing
PubMed: 22008401
DOI: 10.4187/respcare.01471