Diagnosis Of Cough Research Articles

Value of exercise challenge testing in the diagnosis of cough variant asthma in children

To investigate the value of exercise challenge testing (ECT) in the diagnosis of cough variant asthma (CVA) in children. A prospective study was conducted on 78 children with chronic cough who were admitted between January 2023 and January 2024. ECT was performed, and clinical data were collected. According to the effect of bronchodilator treatment, the children were divided into a CVA group (44 children) and a non-CVA group (34 children), and the two groups were compared in terms of clinical characteristics, pulmonary function, and ECT results before treatment. Compared with the non-CVA group, the CVA group had a significantly higher proportion of boys, a significantly higher proportion of children with exercise-induced chronic cough, a significantly higher level of fractional exhaled nitric oxide, and a significantly greater reduction in forced expiratory volume in 1 second (FEV1) after ECT (P<0.05). The regression analysis showed that exercise-induced chronic cough and the reduction in FEV1 were risk factors for CVA (P<0.05). A reduction in FEV1 of 8.44% was the optimal cut-off value for ECT in the diagnosis of CVA, with an area under the curve of 0.751 (P<0.05), a sensitivity of 65.9%, and a specificity of 79.4%. For the children with exercise-induced chronic cough, a reduction in FEV1 of 8.44% was the optimal cut-off value for ECT in the diagnosis of CVA, with an area under the curve of 0.810 (P<0.05), a sensitivity of 77.1%, and a specificity of 77.8%. ECT has clinical application value in the etiological diagnosis of pediatric chronic cough, with a reduction in FEV1 of 8.44% serving as the optimal cut-off value for diagnosing CVA. It is particularly suitable for children with exercise-induced chronic cough, increasing the sensitivity for CVA diagnosis.

Current aspects of differential diagnosis and treatment of cough

Cough is a common and important respiratory symptom that can cause significant complications for patients and be a diagnostic challenge for physicians. An organized approach to the evaluation of cough begins with classifying it as acute, subacute, or chronic based on duration and time of onset. Acute cough (up to 3 weeks) is most often one of the main symptoms of acute respiratory viral infections and acute bronchitis. Subacute cough, lasting from 3 to 8 weeks, is usually postinfectious postviral in origin. Common causes of chronic cough lasting more than 8 weeks with a normal chest X-ray are cough variant of bronchial asthma, chronic obstructive pulmonary disease, upper airway cough syndrome / postnasal drip syndrome, non-asthmatic eosinophilic bronchitis, gastroesophageal reflux, and medications (primarily angiotensin-converting enzyme inhibitors). The spectrum of possible causes of cough is diverse, however, respiratory pathology comes to the forefront in the differential diagnostic search. Successful treatment of cough is an important task in clinical practice. Given the possible multicomponent nature of cough, the presence of catarrhal-respiratory and broncho-obstructive syndromes in the clinical picture along with bronchitis syndrome, combination drugs become the drug of choice. In conclusion, the possibilities of a combined (bromhexine + guaifenesin + salbutamol) expectorant against cough, its effectiveness and safety are considered.

Flexible bronchoscopy in the diagnosis of chronic cough causes in non-smoking adults

Flexible bronchoscopy in the diagnosis of chronic cough causes in non-smoking adults

Are Otolaryngologists Seeing More Cough? Longitudinal Trends and Patterns.

Otolaryngologists play an increasing role in managing cough, but little data exists examining the demographics of this patient population and the referral patterns that influence their access to care. This study sought to elucidate these factors using a longitudinal, nationwide database to minimize sampling bias and identify trends representative of the national population. Nationally representative survey. National Ambulatory Medical Care Survey (NAMCS). Visits with a diagnosis and chief complaint of cough between 2005 and 2019 in NAMCS were examined. Univariable and multivariable analyses were performed to compare patient demographics between visits to surgical specialists, medical specialists, and primary care physicians. Otolaryngologists made up more than 84% of surgical specialist visits. There was a 0.52% [0.20%-0.84%] increase per year in the proportion of visits attributed to surgical specialists. Based on a sensitivity analysis of the multivariable model, Hispanic patients (adjusted odds ratio, aOR: 0.88 [0.78-0.99] vs White) and patients living outside of metropolitan areas (aOR: 0.77 [0.61-0.99] vs living within) were less likely to see surgical specialists than primary care doctors for their cough. Patients who were referred (aOR: 1.47 [1.28-1.72] vs not referred) and with chronic cough (aOR: 1.47 [1.23-1.75] vs acute/subacute) were more likely to see a surgical specialist. Otolaryngologists are increasingly called upon to evaluate and consider treatment for cough. Identifying patient groups with limited access underscores the need for enhanced education about otolaryngologists' roles and integrated care approaches to improve access to specialized cough treatment. Level 4.

Temporary Vocal Fold Augmentation Outcomes for Refractory Chronic Cough with Concurrent Nonparalytic Glottic Insufficiency due to Vocal Fold Atrophy

ObjectiveDetermine the effect of temporary vocal fold augmentation on refractory chronic cough in patients with glottic insufficiency due to vocal fold atrophy. MethodsRetrospective electronic chart review was conducted for patients with a diagnosis of bilateral vocal fold atrophy and refractory chronic cough undergoing vocal fold augmentation with carboxymethylcellulose. Patients with vocal fold immobility were excluded, and cough must have been present for at minimum 8 weeks. VHI-10, CSI, and RSI scores along with subjective overall patient report of chronic cough improvement were collected. ResultsA total of 28 patients underwent 30 vocal fold augmentation procedures with carboxymethylcellulose. All had undergone extensive cough work-up and treatment trials prior to their augmentation procedure. From chart review, 13 overall subjectively reported satisfactory improvement in their cough, 5 reported partial improvement, and 7 reported no improvement in their cough. An uncertain effect on cough was documented in 5 (either patient was uncertain or no mention of cough symptom in the interval chart history note). For those subjects with both pre- and post-augmentation data, mean pre-augmentation CSI: 22.08 + 6.8 (n=13); VHI-10: 13.6 + 8.9 (n=18); RSI: 22.4 + 7.5 (n=17). Mean post-augmentation CSI was 20.7 + 9.2 (n=13); VHI-10: 15.2 + 8.2 (n=18); RSI: 21.1 + 5.8 (n=17). Mean pre-post change in CSI was -1.4 + 5.1 (p=0.175, n=13, range -10 – +6). ConclusionsVocal fold augmentation seems to provide subjective cough improvement in some patients with concurrent glottic insufficiency due to vocal fold atrophy and refractory chronic cough. It can be offered as a diagnostic trial, on which further augmentation may be offered, for patients with persistent cough despite prior work-up and treatment trials. Further controlled prospective studies are needed to identify factors that are predictive of successful cough improvement following vocal fold augmentation, as well as the effect of durable augmentation in those patients who had improvement with a diagnostic trial.

Characteristics, demographics, and epidemiology of possible chronic cough in Sweden: A nationwide register-based cohort study.

To show clinical characteristics, treatments, and comorbidities in chronic cough in a nationwide cohort. Two cohorts were created. A national cohort with individuals from two population-based databases; the National Patient Register and Swedish Prescribed Drug Register. Secondly, a regional cohort including primary care data. Adults with at least one cough diagnosis (ICD-10 R05) and/or individuals with ≥2 dispensed prescriptions for relevant cough-medication within the inclusion period, 2016-2018, were identified. Individuals on medications which may instigate cough or suggest acute infection or diagnosed with conditions where cough is a cardinal symptom, were excluded. Those remaining were defined as having possible refractory or unexplained chronic cough (RCC/UCC). Altogether 62,963 individuals were identified with possible RCC/UCC, giving a national prevalence of about 1%. Mean age was 56 years and 60% were females. Many (44%) of the individuals with possible RCC/UCC visited cough relevant specialist clinics during the study period, but less than 20% received a cough diagnosis. A majority (63%) had evidence of RCC/UCC in the 10 years prior to inclusion in the study. In the regional cohort, including primary care data, the prevalence of RCC/UCC was doubled (2%). Cough medicines were mainly prescribed by primary care physicians (82%). Most individuals with possible RCC/UCC sought medical care in primary care, and had a long history of cough, with various treatments tried, indicating a substantial burden of the condition. Referrals to specialist care were very rare. The results underline the need for a structured multidisciplinary approach and future therapeutic options.

Diagnostic value of the pepsin concentration in saliva and induced sputum for gastroesophageal reflux-induced chronic cough: a prospective clinical study.

Finding a simple, effective and rapid diagnostic method to improve the diagnosis of gastroesophageal reflux-induced chronic cough (GERC) is indicated. Our objective was to determine the diagnostic value of the pepsin concentration in saliva and induced sputum for GERC. 171 patients with chronic cough were enrolled. The diagnosis and treatment followed the chronic cough diagnosis and treatment protocol. Saliva and induced sputum were collected, and the pepsin concentration was determined using Peptest. A Gastroesophageal Reflux Diagnostic Questionnaire (GerdQ) was completed. The diagnostic value of the pepsin concentration in saliva and induced sputum for GERC was analysed and compared. The salivary pepsin concentration predicted GERC with an area under the receiver operating characteristic curve (AUC) of 0.845. The optimal cut-off value was 76.10 ng·mL-1, the sensitivity was 83.58% and the specificity was 82.69%. The pepsin concentration in the induced sputum supernatant for GERC had an AUC of 0.523. When GerdQ was used for GERC diagnosis, the AUC was 0.670 and the diagnostic value of salivary pepsin was better compared to GerdQ (DeLong test, p=0.0008). Salivary pepsin had a comparable diagnostic value to GerdQ (AUC 0.779 versus 0.826; p=0.4199) in acidic GERC. Salivary pepsin had superior diagnostic value compared to GerdQ (AUC 0.830 versus 0.533; p<0.0001) in non-acidic GERC. A salivary pepsin concentration >76.10 ng·mL-1 is of good diagnostic value for GERC, especially in non-acidic GERC. The pepsin concentration in induced sputum has a low diagnostic value.

Transient reemergence of Bordetella parapertussis in France in 2022.

Between March and October 2022, a peak of detection of Bordetella parapertussis by qPCR, real-time PCR was observed in France.Hypothesis/Gap Statement. Whether this peak was due to resurgence from previous circulating lineages or reintroduction into the country was unknown.Objective. The objective of this study is to understand B. parapertussis-transient increase observed in France in 2022 whereas it had virtually stopped being reported since the start of the COVID-19 pandemic in 2020.Methods. We analysed real-time PCR (qPCR) data from the two largest French outpatient laboratories performing whooping cough diagnosis and characterized all B. parapertussis isolates collected in the 2016-2022 period by the French National Reference Centre for Whooping Cough.Results. Microbiological analyses reveal that 13 of 18 bacterial isolates collected in 2022 produce the vaccine antigen pertactin, whereas none of the 22 isolates collected in the 2016-2021 period did.Conclusion. We hypothesize a re-introduction of B. parapertussis from regions of the world where whole-cell vaccines are still in use.

Chronic cough diagnosis, treatment, and referral practices among family physicians in the United States: a survey study

BackgroundCough is one of the most common presenting problems for patients in primary care and is largely managed in primary care clinical settings. Family physicians’ familiarity with chronic cough guidelines and the extent to which these guidelines translate into everyday practice have not been well described. The objective of this study was to characterize current diagnosis, treatment, and referral practices among family physicians and to identify potentially impactful strategies to optimize chronic cough management in primary care.MethodsWe conducted a cross-sectional survey of 5,000 family physicians to explore diagnosis, treatment, and referral practices related to chronic cough management in adults in primary care. Respondents completed the survey via paper or online. The outcome measures were self-reported numeric ratings and responses related to the survey elements.Results588 surveys were completed (11.8% response rate). About half (49.6%) of respondents defined chronic cough in a manner consistent with the American College of Chest Physicians (ACCP) chronic cough guidelines, with the rest differing in opinion primarily regarding duration of symptom presentation. Respondents reported trying to rule out most common causes of chronic cough themselves before referring (mean 3.41 on a 4-point scale where 4 is “describes me completely”) and indicated a desire for more resources to help them manage and treat chronic cough. Years in practice and rural/urban setting influenced diagnosis and referral practices.ConclusionsFamily physicians see chronic cough as a complicated condition that can be and is often diagnosed and treated entirely in a primary care setting. They also value the ability to refer in complex cases. Our results support that family physicians provide evidence-based management of chronic cough.

Paciente que consulta por tos

Cough is one of the most common reasons for outpatient medical consultation. Most of the time it is self-limiting so doctors tend not to give it much importance. However, cough can be caused by serious pathologies such as cancer, fibrosis and pulmonary tuberculosis. Furthermore, when the cough is intense or prolonged it can cause significant alterations in the quality of life of patients. In this article we will review the main guidelines for diagnosis and treatment of cough, how to suspect serious etiologies, when to define a treatment according to clinical information and when to request tests. Finally, we will discuss two clinical cases in order to illustrate some concepts.

Chronic cough in children: an evidence-based clinical practice guideline adapted for the use in Egypt using ‘Adapted ADAPTE’

BackgroundWe recently adopted a guideline for chronic cough in children in the Egyptian health system. Adapting clinical practice guidelines (CPGs) to the local healthcare setting is a valid alternative to de-novo development that can improve their uptake and implementation without demanding a substantial drain on resources. The objective of this study was to adapt evidence-based recommendations from global high-quality CPGs for children with a chronic cough to suit the Egyptian healthcare context.MethodsWe followed the Adapted ADAPTE methodological framework for guideline adaptation. This process includes three phases: set-up, adaptation, and finalization. A guideline adaptation group (GAG) and an external review group including clinical content experts and methodologists conducted the process.ResultsThe GAG adapted 10 sections of recommendations from three original CPG(s) including (i) the American College of Chest Physicians (ACCP) 2006–2020, (ii) the European Respiratory Society (ERS) 2019, (iii) the Korean Academy of Asthma, Allergy and Clinical Immunology (KAAACI) 2018. A set of CPG implementation tools was added to enhance implementability including an algorithm, a slide presentation for clinical diagnosis, investigations and treatment of chronic cough, patient education, and online resources.ConclusionThe adapted CPG provides pediatricians and related healthcare workers with applicable evidence-based recommendations for chronic cough in children in Egypt. The project also highlighted the utility of Adapted ADAPTE and the invaluable collaboration between the clinical and methodological experts for the adaptation of pediatric national guidelines.

Identifying Practice Gaps Among Otolaryngology Providers for the Treatment of Chronic Cough.

Increasing evidence over the last decade suggests that many cases of unexplained chronic cough (UCC) have a neurogenic etiology, with laryngeal hypersensitivity (LH) being identified as a key mechanism. Official guidelines since 2015 have adopted use of neuromodulators and adjuvant speech therapy as a result, but historically implementation of guidelines is slow. Our survey aimed to investigate gaps in diagnosis and management practices of otolaryngology providers in caring for patients with UCC. Cross-sectional study. Survey. 12-item survey was distributed to 110 otolaryngology practitioners experienced in diagnosis and treatment of chronic cough at a regional otolaryngology continuing education conference. Statistical analysis included Kendall's Tau Rank Correlation to measure the ordinal association between responses to questions, and Fisher's exact test to determine if there were associations between responses and years of career experience. Fortyeligible respondents underwent subsequent analysis. There was no association between frequency of identifying LH as a primary etiology and use of neuromodulators (τ = 0.23, P = .10). However, there was a significant correlation between LH and referrals to speech therapy (τ = 0.27, P = .05). Fisher's exact test did not reveal any significant differences among any responses based on practitioner experience. Our results indicate a possible disparity in treatment of UCC with neuromodulators and the utilization of speech therapy despite guideline recommendations advocating for neuromodulators with adjuvant speech therapy. Further research with larger sample sizes and more specific inquiries is necessary to elucidate this association and control for any regional differences.

Nepridržavanje pedijatara primarne zdravstvene zaštite u Srbiji najnovijih upustava za lečenje akutnog i hroničnog kašlja kod dece

Introduction: Cough is the most frequent symptom in children and can indicate various pathological conditions. Several international guidelines have been published with a purpose of standardizing and improving the assessment and management of cough. Non-adherence to guidelines often leads to a suboptimal quality of patient care. Our aim was to investigate the adherence of Serbian primary care pediatricians to the latest international guidelines on cough diagnosis and management. Methods: The study included pediatricians working in primary health care centers in Serbia. They were given a questionnaire designed by a team of pediatric pulmonologists which included questions about the choice of diagnostic and therapeutic approaches in acute and chronic cough. Results: Most of primary care pediatricians assessed the value of international guidelines as fair. However, nearly 70% stated that they prescribed herbal syrup for acute cough. Chronic cough is treated mostly with ivy extract, bronchodilators and antihistamines. A majority of doctors declared positive opinion of herbal medicaments and negative opinion of alternative medicine. About 73% stated that they did not use the chest x-ray as a part of diagnostic procedure. Conclusion: Serbian pediatricians do not adhere to international guidelines in relation to diagnosis and treatment of cough. The reasons for non-adherence to guidelines should be further investigated.

Advances in clinical studies of chronic cough

Chronic cough is a common complaint in respiratory specialist clinics, with a significant impact on cough-specific quality of life and psychophysiological health. The diagnosis, treatment and management of chronic cough remains a major challenge. We summarized a series of recent advances from clinical studies in the epidemiology, diagnosis and management of chronic cough over the past year.

Strengthen multidisciplinary diagnosis and treatment and collaborative research on chronic cough

Chronic cough is the most common complaint in respiratory specialist clinics. The causes of chronic cough are related to respiratory system, otorhinolaryngology, gastroenterology, psychiatry and other systems. Cough hypersensitivity is the most important clinical and pathophysiological feature. Many patients with chronic cough are misdiagnosed and treated inappropriately. To improve the diagnosis and treatment of chronic cough, we should establish a multidisciplinary team and strengthen collaborative study, including cough laboratory, multidisciplinary clinic, and chronic cough ward.

Surgical treatment of gastroesophageal reflux-related cough

Gastroesophageal reflux-related cough (GERC) is an extra-esophageal manifestation of gastroesophageal reflux disease (GERD) and a common cause of chronic cough. GERC is the most difficult of the chronic cough to diagnose and treat because of its lack of specificity and its multidisciplinary nature. In recent years, research into GERC has led to a consensus on many key issues. The 2021 edition of the Guidelines for the Diagnosis and Treatment of Cough (Cough guidelines) provides important guidance on the diagnosis and treatment of GERC. However, the surgical treatment of GERC is not well covered in the Cough guidelines. This article summarizes the surgical treatment of GERC in terms of surgical methods, current situation, indications for operation and curative effects.

Post Covid-19 endobronchial tuberculosis misdiagnosed as asthma

We present a case of a 21-year-old woman, with prolonged cough and wheezing following a mild COVID-19 infection. Despite multiple attempts to recognize the cause and manage her cough, her symptoms did not improve. A careful examination revealed monophonic wheezing and purulent sputum, raising suspicion for Endobronchial Tuberculosis (EBTB). Chest computed tomography scan showed a tree-in-bud pattern and narrowed the bronchial lumen. Acid-fast bacillus smear and genXpert MTB/RIF test further confirmed the presence of Mycobacterium tuberculosis. This case highlights the importance of considering EBTB as a potential diagnosis for chronic cough, particularly in COVID-19 survivors in tuberculosis-endemic areas.

Post Covid-19 endobronchial tuberculosis misdiagnosed as asthma

We present a case of a 21-year-old woman, with prolonged cough and wheezing following a mild COVID-19 infection. Despite multiple attempts to recognize the cause and manage her cough, her symptoms did not improve. A careful examination revealed monophonic wheezing and purulent sputum, raising suspicion for Endobronchial Tuberculosis (EBTB). Chest computed tomography scan showed a tree-in-bud pattern and narrowed the bronchial lumen. Acid-fast bacillus smear and genXpert MTB/RIF test further confirmed the presence of Mycobacterium tuberculosis. This case highlights the importance of considering EBTB as a potential diagnosis for chronic cough, particularly in COVID-19 survivors in tuberculosis-endemic areas.

Management of cough in Canadian primary care and specialty practices: A survey of current knowledge of clinicians and allied health professionals

RATIONALE Cough is one of the most common causes for medical consultation. However, we do not know whether its management is optimal in Canada. Although guidelines are available, awareness of these and implementation of their recommendations are uncertain. OBJECTIVE The objective of this research was to evaluate the diagnostic approach and management of cough, as well as knowledge of cough guidelines in Canada. METHODS A cross-sectional online survey of general practitioners (GPs), specialists (SPs) and allied health professionals (AHPs) was conducted anonymously in Canada. Participants answered multiple-choice questions on etiology, diagnosis, follow-up and treatment (only physicians) of cough and knowledge and application of cough guidelines. MEASUREMENTS AND MAIN RESULTS A total of 248 respondents completed the survey (43 GPs, 27 SPs, and 178 AHPs). In the investigation of a patient with chronic cough, a chest radiograph was the most common test ordered by physicians (GPs: 51.2%, SPs: 59.3%) and spirometry with bronchodilator reversibility (61.2%) by AHPs. GPs most often treated cough of unknown etiology with combined inhaled corticosteroid (ICS)-long-acting β2-agonist (LABA) (25.8%) and SPs with a nasal corticosteroid (NCS)(29.8%). NCS was also the most often prescribed treatment for cough considered originating in the upper respiratory tract (GPs: 60.4%, SPs: 76.2%). When cough was believed to be due to asthma or gastroesophageal reflux disease, treatment was appropriate in most cases. Awareness of current cough guidelines content was poor in all groups (GPs: 14.0%, SPs: 51.9%, AHPs: 26.6%). CONCLUSIONS Physicians and AHPs’ knowledge and application of guidelines for the management of chronic cough remains poor.

Expert consensus on diagnosis and treatment of COVID-19 infection related cough in children

An epidemic outbreak of the corona virus disease 2019(COVID-19) Omicron variant occurred in most regions of China. Children are susceptible to COVID-19 and the vast majority of them suffer from upper respiratory tract infection. Cough is one of the most common symptoms. COVID-19 infection related cough includes acute cough, persistent cough and chronic cough, and children with original chronic cough or chronic lung disease can also induce or aggravate symptom of cough after infection, which has a great impact on children's physical and mental health. The treatment for COVID-19 infection related cough vary with the etiology. Improper treatment would delay the patient's condition and increase adverse drug reaction. Currently, there is no guideline or consensus on the diagnosis and treatment of COVID-19 infection related cough in children in China, therefore this consensus is drafted. Referring to the latest international research and the diagnostic and therapeutic strategy for COVID-19 infection (Tenth Edition For Trial Implementation), and combining with clinical diagnosis and treatment experience,the consensus elaborates the pathogenesis and etiology of COVID-19 infection related cough, the use of cough relievers and expectorants, as well as the key points of diagnosis and treatment of different etiological factors. It is expected to provide specific and feasible guidance scheme for pediatricians, general practitioners and clinical pharmacists.