Frailty Hinders Recovery From Influenza and Acute Respiratory Illness in Older Adults

BACKGROUND

We examined frailty as a predictor of recovery in older adults hospitalized with influenza and acute respiratory illness.

METHODS

A total of 5011 patients aged ≥65 years were admitted to Canadian Serious Outcomes Surveillance Network hospitals during the 2011/2012, 2012/2013, and 2013/2014 influenza seasons. Frailty was measured using a previously validated frailty index (FI). Poor recovery was defined as death by 30 days postdischarge or an increase of more than 0.06 (≥2 persistent new health deficits) on the FI. Multivariable logistic regression controlled for age, sex, season, influenza diagnosis, and influenza vaccination status.

RESULTS

Mean age was 79.4 (standard deviation = 8.4) years; 53.1% were women. At baseline, 15.0% (n = 750) were nonfrail, 39.3% (n = 1971) were prefrail, 39.8% (n = 1995) were frail, and 5.9% (n = 295) were most frail. Poor recovery was experienced by 21.4%, 52.0% of whom had died. Frailty was associated with lower odds of recovery in all 3 seasons: 2011/2012 (odds ratio [OR] = 0.70; 95% confidence interval [CI], 0.59-0.84), 2012/2013 (OR = 0.72; 95% CI, 0.66-0.79), and 2013/2014 (OR = 0.75; 95% CI, 0.69-0.82); results varied by season, influenza status, vaccination status, and age.

CONCLUSIONS

Increasing frailty is associated with lower odds of recovery, and persistent worsening frailty is an important adverse outcome of acute illness.

Frailty Hinders Recovery From Influenza and Acute Respiratory Illness in Older Adults

BACKGROUND

We examined frailty as a predictor of recovery in older adults hospitalized with influenza and acute respiratory illness.

METHODS

A total of 5011 patients aged ≥65 years were admitted to Canadian Serious Outcomes Surveillance Network hospitals during the 2011/2012, 2012/2013, and 2013/2014 influenza seasons. Frailty was measured using a previously validated frailty index (FI). Poor recovery was defined as death by 30 days postdischarge or an increase of more than 0.06 (≥2 persistent new health deficits) on the FI. Multivariable logistic regression controlled for age, sex, season, influenza diagnosis, and influenza vaccination status.

RESULTS

Mean age was 79.4 (standard deviation = 8.4) years; 53.1% were women. At baseline, 15.0% (n = 750) were nonfrail, 39.3% (n = 1971) were prefrail, 39.8% (n = 1995) were frail, and 5.9% (n = 295) were most frail. Poor recovery was experienced by 21.4%, 52.0% of whom had died. Frailty was associated with lower odds of recovery in all 3 seasons: 2011/2012 (odds ratio [OR] = 0.70; 95% confidence interval [CI], 0.59-0.84), 2012/2013 (OR = 0.72; 95% CI, 0.66-0.79), and 2013/2014 (OR = 0.75; 95% CI, 0.69-0.82); results varied by season, influenza status, vaccination status, and age.

CONCLUSIONS

Increasing frailty is associated with lower odds of recovery, and persistent worsening frailty is an important adverse outcome of acute illness.

Recent progress in understanding 2019 novel coronavirus (SARS-CoV-2) associated with human respiratory disease: detection, mechanisms and treatment

Viral respiratory diseases such as severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) always pose a severe threat to people. First identified in late December 2019, a novel coronavirus (2019-nCoV; SARS-CoV-2) has affected many provinces in China and multiple countries worldwide. The viral outbreak has aroused panic and a public-health emergency around the world, and the number of infections continues to rise. However, the causes and consequences of the pneumonia remain unknown. To effectively implement epidemic prevention, early identification and diagnosis are critical to disease control. Here we scrutinise a series of available studies by global scientists on the clinical manifestations, detection methods and treatment options for the disease caused by SARS-CoV-2, named coronavirus disease 2019 (COVID-19), and also propose potential strategies for preventing the infection.

[Aspergillus-related respiratory conditions and COPD: Diagnostic challenges]

INTRODUCTION

The relations between chronic obstructive pulmonary disease (COPD) and respiratory diseases due to Aspergillus spp. are not well understood.

METHODS

We analysed a retrospective series of patients hospitalized with a diagnosis of COPD and respiratory disease due to Aspergillus. Patients were identified between 2010 and 2015 from the medico-administrative database of Cochin hospital, Paris. Historical, clinical, biological, microbiological and imaging data were collected and described. Diagnoses were reclassified based on reference definitions and classifications from the literature. Patients were classified according to the type of Aspergillus-related diseases and risk factors were described.

RESULTS

Forty patients were identified. Classifiable Aspergillus-related respiratory conditions were confirmed in 26 of them including 12 allergic bronchopulmonary aspergillosis (ABPA), 8 chronic pulmonary aspergillosis (CPA), 1 invasive pulmonary aspergillosis (IPA) and 3 diagnostic associations ABPA/CPA. Other respiratory comorbidities were present in all cases of CPA and immunodepression was recorded for semi-invasive and invasive forms. Finally, 16 patients could not be classified, among whom Aspergillus related lung disease was considered as likely in one-half.

CONCLUSION

The complexity of the diagnosis of pulmonary aspergillosis is related to its multiple types with sometimes unclear distinctions. Any type of pulmonary aspergillosis can be observed in patients with COPD, depending on associated risks factors. It would be helpful to establish specific classifications adapted to patients with COPD. This will require larger, prospective, multicentre studies.

Impact of Air Pollution and Trans-Boundary Haze on Nation-Wide Emergency Department Visits and Hospital Admissions in Singapore

INTRODUCTION

Air pollution is associated with adverse health outcomes. However, its impact on emergency health services is less well understood. We investigated the impact of air pollution on nation-wide emergency department (ED) visits and hospital admissions to public hospitals in Singapore.

MATERIALS AND METHODS

Anonymised administrative and clinical data of all ED visits to public hospitals in Singapore from January 2010 to December 2015 were retrieved and analysed. Primary and secondary outcomes were defined as ED visits and hospital admissions, respectively. Conditional Poisson regression was used to model the effect of Pollutant Standards Index (PSI) on each outcome. Both outcomes were stratified according to subgroups defined a priori based on age, diagnosis, gender, patient acuity and time of day.

RESULTS

There were 5,791,945 ED visits, of which 1,552,187 resulted in hospital admissions. No significant association between PSI and total ED visits (Relative risk [RR], 1.002; 99.2% confidence interval [CI], 0.995-1.008; P = 0.509) or hospital admissions (RR, 1.005; 99.2% CI, 0.996-1.014; P = 0.112) was found. However, for every 30-unit increase in PSI, significant increases in ED visits (RR, 1.023; 99.2% CI, 1.011-1.036; P = 1.24 × 10^-6 ) and hospital admissions (RR, 1.027; 99.2% CI, 1.010-1.043; P = 2.02 × 10^-5 ) for respiratory conditions were found.

CONCLUSION

Increased PSI was not associated with increase in total ED visits and hospital admissions, but was associated with increased ED visits and hospital admissions for respiratory conditions in Singapore.

Association between Upper-airway Surgery and Ameliorative Risk Markers of Endothelial Function in Obstructive Sleep Apnea

The objective of our study was to evaluate the effects of upper-airway surgery on improvement of endothelial function-related markers in patients with obstructive sleep apnea (OSA). Subjects with moderate to severe OSA who underwent upper-airway surgery, with a follow-up duration of at least 6 months, were included. Pre- and postoperative polysomnographic variables and endothelial function-related markers were compared. Subgroup and correlation analyses were conducted to find possible indicators for better endothelial function-related markers after upper-airway surgery. In total, 44 patients with OSA were included. The mean follow-up duration was 1.72 ± 0.92 years. Serum VEGFA [-20.29 (CI: -35.27, -5.31), p < 0.05], Ang2 [-0.06 (CI: -0.16, 0.03), p < 0.05], E-selectin [-7.21 (CI: -11.01, -3.41), p < 0.001], VWF [-58.83 (CI: -103.93, -13.73), p < 0.05], VWFCP [-33.52 (CI: -66.34, -0.70), p < 0.05], and TM [-0.06 (CI: -0.09, -0.03), p < 0.05] were significantly lower after upper-airway surgery. However, other risk markers of endothelial function, such as Ang1, ICAM1, VEGFR1, and VCAM, did not change significantly. Correlations between improved endothelial function-related markers and ameliorated oxyhemoglobin saturation and glucolipid metabolism were established. Upper-airway surgery might be associated with an improvement in endothelial function in patients with OSA. These changes may be associated with improved oxygen saturation after upper-airway surgery.

Reduced mortality from lower respiratory tract disease in adult diabetic patients treated with metformin

BACKGROUND AND OBJECTIVE

Chronic lower respiratory diseases (CLRD) increase the risk of type 2 diabetes, which in turn may worsen lung function. Metformin, a common antidiabetic with anti-inflammatory and antioxidant properties, may improve respiratory outcomes. Therefore, we examined the association of metformin use with the risk of mortality from CLRD.

METHODS

We analysed data from the National Health and Nutrition Examination Survey during 1988-1994 and 1999-2010 for participants aged 40 years or older who had diabetes and were followed up for mortality through 2011. Information on prescription medicine was collected at baseline and CLRD-related mortality during follow-up was defined using the 10th Revision of the International Classification of Diseases (ICD-10). Cox proportional hazards modelling was used to determine the mortality hazard ratio (HR) associated with metformin use, adjusting for relevant covariates.

RESULTS

A total of 5266 participants with a median follow-up of 6.1 years were included. The prevalence of metformin use was 31.9% and 1869 participants died during follow-up, including 72 of CLRD. In the adjusted Cox proportional regression analysis, metformin was associated with a decreased risk of CLRD mortality in the overall population (HR: 0.39, 95% CI: 0.15-0.99) and among participants with baseline CLRD (HR: 0.30, 95% CI: 0.10-0.93), after adjusting for age, gender, race/ethnicity, cigarette smoking, body mass index, current asthma and chronic obstructive pulmonary disease (COPD), insulin and other diabetic medications, and glycohaemoglobin level. We found no association between other antidiabetic medications and CLRD mortality.

CONCLUSION

In this sample representative of the U.S. population, metformin was associated with lower CLRD mortality in adults with diabetes.

Treatable traits in acute exacerbations of chronic airway diseases

Acute exacerbations of chronic airway disease are common occurrences that cause a major burden of illness. Acute exacerbations are associated with impaired health status, increased lung function decline, hospitalization and increased risk of death. Exacerbation avoidance is a major priority. Despite this goal, exacerbations continue to occur and the need for effective models of care that optimize patient outcomes are urgently needed. 'Treatable Traits' is an approach to personalized medicine that has been proposed for the management of airway diseases. The treatable traits approach allows for the recognition of clinically important, identifiable and treatable disease characteristics, followed by targeted and individualized treatment interventions to address each trait. We review the literature relating to treatable traits in airway diseases; in particular, those traits that can predict exacerbations and approaches to management that aim to prevent exacerbations by using a treatable traits model of care. We propose this approach as a potentially useful model of care to both prevent and manage acute exacerbations.

Reflux aspiration in lungs of dogs with respiratory disease and in healthy West Highland White Terriers

BACKGROUND

Gastroesophageal reflux and microaspiration (MA) of gastric juice are associated with various human respiratory diseases but not in dogs.

OBJECTIVE

To detect the presence of bile acids in bronchoalveolar lavage fluid (BALF) of dogs with various respiratory diseases.

ANIMALS

Twenty-seven West Highland White Terriers (WHWTs) with canine idiopathic pulmonary fibrosis (CIPF), 11 dogs with bacterial pneumonia (BP), 13 with chronic bronchitis (CB), 9 with eosinophilic bronchopneumopathy (EBP), 19 with laryngeal dysfunction (LD), 8 Irish Wolfhounds (IWHs) with previous BPs, 13 healthy WHWTs, all privately owned dogs, and 6 healthy research colony Beagles METHODS: Prospective cross-sectional observational study with convenience sampling of dogs. Bile acids were measured by mass spectrometry in BALF samples. Total bile acid (TBA) concentration was calculated as a sum of 17 different bile acids.

RESULTS

Concentrations of TBA were above the limit of quantification in 78% of CIPF, 45% of BP, 62% of CB, 44% of EBP, 68% of LD, and 13% of IWH dogs. In healthy dogs, bile acids were detected less commonly in Beagles (0/6) than in healthy WHWTs (10/13). Concentrations of TBA were significantly higher in CIPF (median 0.013 μM, range not quantifiable [n.q.]-0.14 μM, P < .001), healthy WHWTs (0.0052 μM, n.q.-1.2 μM, P = .003), LD (0.010 μM, n.q.-2.3 μM, P = .015), and CB (0.0078 μM, n.q.-0.073 μM, P = .018) groups compared to Beagles (0 μM, n.q.).

CONCLUSION AND CLINICAL IMPORTANCE

These results suggest that MA occurs in various respiratory diseases of dogs and also in healthy WHWTs.

On respiratory manifestations of gastroesophageal reflux disease

One of the manifestations of gastroesophageal reflux disease (GERD) is extraesophageal symptoms, in particular, from the upper and lower respiratory tract. Gastroesophageal reflux is capable of both causing respiratory symptoms independently and aggravating the course of already existing diseases of the respiratory system. The article presents available in the literature current information on the pathogenesis of GERD respiratory symptoms, their clinical course, considerations of diagnosis and treatment.

Prognostic Significance of Large Airway Dimensions on Computed Tomography in the General Population. The Multi-Ethnic Study of Atherosclerosis (MESA) Lung Study

RATIONALE

Large airway dimensions on computed tomography (CT) have been associated with lung function, symptoms, and exacerbations in chronic obstructive pulmonary disease (COPD), as well as with symptoms in smokers with preserved spirometry. Their prognostic significance in persons without lung disease remains undefined.

OBJECTIVES

To examine associations between large airway dimensions on CT and respiratory outcomes in a population-based cohort of adults without prevalent lung disease.

METHODS

The Multi-Ethnic Study of Atherosclerosis recruited participants ages 45-84 years without cardiovascular disease in 2000-2002; we excluded participants with prevalent chronic lower respiratory disease (CLRD). Spirometry was measured in 2004-2006 and 2010-2012. CLRD hospitalizations and deaths were classified by validated criteria through 2014. The average wall thickness for a hypothetical airway of 10-mm lumen perimeter on CT (Pi10) was calculated using measures of airway wall thickness and lumen diameter. Models were adjusted for age, sex, principal components of ancestry, body mass index, smoking, pack-years, scanner, percent emphysema, genetic risk score, and initial forced expiratory volume in 1 second (FEV1) percent predicted.

RESULTS

Greater Pi10 was associated with 9% faster FEV1 decline (95% confidence interval [CI], 2 to 15%; P = 0.012) and increased incident COPD (odds ratio, 2.22; 95% CI, 1.43-3.45; P = 0.0004) per standard deviation among 1,830 participants. Over 78,147 person-years, higher Pi10 was associated with a 57% higher risk of first CLRD hospitalization or mortality (P = 0.0496) per standard deviation. Of Pi10's component measures, both greater airway wall thickness and narrower lumen predicted incident COPD and CLRD clinical events.

CONCLUSIONS

In adults without CLRD, large airway dimensions on CT were prospectively associated with accelerated lung function decline and increased risks of COPD and CLRD hospitalization and mortality.

Polypharmacy among patients with diabetes: a cross-sectional retrospective study in a tertiary hospital in Saudi Arabia

ObjectivesPatients with diabetes are at high risk for polypharmacy (ie, use of multiple medications) for treatment of diabetes, associated comorbidities and other coexisting conditions. This study aims to estimate the prevalence of polypharmacy and factors associated with polypharmacy among adult patients with diabetes.

METHODS

A cross-sectional retrospective observational study of adults with diabetes, who visited the outpatient clinic of a tertiary teaching hospital in Saudi Arabia, was conducted. Data were extracted from the Electronic Health Record database for a period of 12 months (January-December 2016). Polypharmacy was defined as the cumulative use of five or more medications. Polypharmacy among adults with diabetes was measured by calculating the average number of medications prescribed per patient. A multivariable logistic regression model was used to examine the factors associated with polypharmacy.

RESULTS

A total of 8932 adults with diabetes were included in this study. Of these, nearly 78% had polypharmacy which was more likely among women as compared with men and more likely among older adults (age ≥60 years) as compared with the adults. Also, polypharmacy was two times as likely among patients with coexisting cardiovascular conditions (adjusted OR (AOR)=2.89; 95% CI 2.54 to 3.29), respiratory disease (AOR=2.42; 95% CI 1.92 to 3.03) and mental health conditions (AOR=2.19; 95% CI 1.74 to 2.76), and three times as likely among patients with coexisting musculoskeletal disease (AOR=3.16; 95% CI 2.31 to 4.30) as compared with those without these coexisting chronic conditions categories.

CONCLUSIONS

Polypharmacy is common among patients with diabetes, with an even higher rate in older adults patients. Healthcare providers can help in detecting polypharmacy and in providing recommendations for simplifying medication regimens and minimising medications to enhance the outcome of diabetes care.

[Decision to refrain from resuscitation in hospitals]

BACKGROUND

In 2009, the Norwegian Directorate of Health published the national guidelines 'Decision-making processes in the limitation of life-prolonging treatment' (1). It is not known whether the recommendations in the guidelines are followed in clinical practice. The purpose of this study was to investigate the decision-making process when a DNR order has been issued to refrain from resuscitation and the patient group for whom such an order is made.

MATERIAL AND METHOD

The patients studied were hospitalised in the medical ward of a local hospital in 2012. Patients with a DNR order were identified through searches in 'critical information' in the DIPS patient record system. The study was conducted by means of a retrospective review of patient records with a follow-up time of two years. When competence to give informed consent was not recorded in the patient records, this was assessed based on other information in the records.

RESULTS

A total of 363 out of 12 522 patients hospitalised in 2012 were registered with DNR orders. Their average age was 82.5 years. Hospital mortality was 37 % and 30-day mortality 66 %. The DNR order was based on the patient's own wishes in 116 out of 363 patients. Altogether 64 % of these were women. Competence to give informed consent was never explicitly noted in the patient records. A total of 27 % of the patients who were assessed as competent to give informed consent were not involved in the decision.

INTERPRETATION

Patients with DNR orders are characterised by advanced age, mortality and morbidity. Clearer documentation of the assessment of competence to give informed consent, as well as better involvement of the patient, are necessary.

The evaluation and management of respiratory disease in children with Down syndrome (DS)

Children with Down syndrome (DS) have wide range of respiratory problems. Although underlying abnormalities in the respiratory system are important causes of morbidity and mortality in children with DS, particularly in the young, abnormalities in other organ systems may also impact respiratory function. A comprehensive evaluation of the child with DS and respiratory disease may prevent short-term morbidity and mortality, and reduce the incidence of complications in the long term. This review provides an overview of the various causes of respiratory disease, and insight into some of the newer therapies available to treat obstructive sleep apnea, in this population.

Predictors of Acute Complications Following Traumatic Upper Extremity Amputation

Current literature is deficient in its description of acute complications following major traumatic upper extremity amputations (UEAs). This study sought to identify acute complications following major UEAs by the 2009-2012 National Trauma Databank to extract demographics, comorbidities, concomitant injuries, and surgical characteristics for major traumatic UEA patients. Multivariate analyses identified significant predictors of mortality and major systemic complications. Major traumatic upper extremity amputations were identified in 1190 patients. Major systemic complications occurred in 13% of patients and most often involved pulmonary (7.4%) or renal (4.7%) systems. Overall in-hospital mortality rate was 11%. Male sex, prehospital systolic blood pressure less than 90, Injury Severity Score > 16, and initial Glasgow Coma Scale > 8 were risk factors for complications or in-hospital mortality. Acute replantation was performed in 0.12%. Systemic complications following major traumatic UEA typically affect the pulmonary system. Injury or patient-dependent factors did not influence acute treatment with revision amputation versus replantation. (Journal of Surgical Orthopaedic Advances 27(2):113-118, 2018).

Respiratory events in ward are associated with later intensive care unit (ICU) admission and hospital mortality in onco-hematology patients not admitted to ICU after a first request

INTRODUCTION

Prognostic impact of delayed intensive care unit(ICU) admission in critically ill cancer patients remains debatable. We determined predictive factors for later ICU admission and mortality in cancer patients initially not admitted after their first ICU request.

METHODS

All cancer patients referred for an emergency ICU admission between 1 January 2012 and 31 August 2013 were included.

RESULTS

Totally, 246(54.8%) patients were immediately admitted. Among 203(45.2%) patients denied at the first request, 54(26.6%) were admitted later. A former ICU stay [OR: 2.75(1.12-6.75)], a request based on a clinical respiratory event[OR: 2.6(1.35-5.02)] and neutropenia[OR: 2.25(1.06-4.8)] were independently associated with later ICU admission. Survival of patients admitted immediately and later did not differ at ICU(78.5% and 70.4%, respectively; p = 0.2) or hospital(74% and 66%, respectively; p = 0.24) discharge. Hospital mortality of patients initially not admitted was 29.7% and independently associated with malignancy progression[OR: 3.15(1.6-6.19)], allogeneic hematopoietic stem cell transplantation[OR: 2.5(1.06-5.89)], a request based on a clinical respiratory event[OR: 2.36(1.22-4.56)] and severe sepsis[OR: 0.27(0.08-0.99)].

CONCLUSION

Compared with immediate ICU admission, later ICU admission was not associated with hospital mortality. Clinical respiratory events were independently associated with both later ICU admission and hospital mortality.

The Breathing, Thinking, Functioning clinical model: a proposal to facilitate evidence-based breathlessness management in chronic respiratory disease

Refractory breathlessness is a highly prevalent and distressing symptom in advanced chronic respiratory disease. Its intensity is not reliably predicted by the severity of lung pathology, with unhelpful emotions and behaviours inadvertently exacerbating and perpetuating the problem. Improved symptom management is possible if clinicians choose appropriate non-pharmacological approaches, but these require engagement and commitment from both patients and clinicians. The Breathing Thinking Functioning clinical model is a proposal, developed from current evidence, that has the potential to facilitate effective symptom control, by providing a rationale and focus for treatment.

The effect of habitual waterpipe tobacco smoking on pulmonary function and exercise capacity in young healthy males: A pilot study

BACKGROUND

Evidence regarding the health effects of habitual waterpipe smoking is limited, particularly in young smokers. Respiratory health and cardiopulmonary exercise tests were compared in young male habitual waterpipe smokers (WPS) versus non-smokers.

METHODS

69 WPS (≥3 times/week for three years) and 69 non-smokers were studied. Respiratory health was assessed through the American Thoracic Society and the Division of Lung Diseases (ATS-DLD-78) adult questionnaire. Pulmonary function and cardiopulmonary exercise tests were performed. Self-reported respiratory symptoms, forced expiratory volume in first second (FEV1), forced vital capacity (FVC), FEV1/FVC ratio, forced expiratory flow between 25 and 75% of FVC (FEF25-75%), peak expiratory flow (PEF), exercise time, peak end-tidal CO2 tension (PetCO2), subject-reported leg fatigue and dyspnea; peak O2 uptake (VO2 max), and end-expiratory lung volume (EELV) change from baseline (at peak exercise) were measured.

RESULTS

WPS were more likely than non-smokers to report respiratory symptoms. WPS also demonstrated: shorter exercise time; lower peak VO2; higher perceived dyspnea at mid-exercise; lower values of the following: FEV1, FVC, PEF, and EELV change.

CONCLUSION

Habitual waterpipe tobacco smoking in young seemingly healthy individuals is associated with a greater burden of respiratory symptoms and impaired exercise capacity.

[Mountain medicine. II]

Travelling to high altitudes is an increasingly popular form of recreational holiday. Individual medical advice may be essential for certain groups of individuals such as patients with chronic disorders, pregnant women or children. This is the second part in a series of two articles on mountain medicine. The first part covered high-altitude physiology and medical aspects of objective alpine dangers and the increased exposure to ultraviolet radiation. This part covers altitude sickness, fluid balance, nutrition, and precautions for patients with pre-existing medical conditions, pregnant women and children.

Etiology of Stridor in Infants

Objectives:

We undertook to identify data that facilitate determination of an accurate diagnosis of the cause of stridor in infants and to develop a framework to conceptualize the problem.

Methods:

We reviewed medical records of patients less than 1 year of age with the presenting symptom of stridor who were initially evaluated in the outpatient setting of a tertiary children's hospital. Infants with obvious congenital syndromes, cerebral palsy, or hypotonia were excluded. All infants underwent history-taking, physical examination, and when symptoms were mild, office flexible laryngoscopy. With moderate or severe stridor, a more complete endoscopic evaluation was undertaken in the operating room.

Results:

Of 202 patients, 119 (59%) were boys and 83 (41%) were girls. Their ages ranged from 3 days to 11 months; 175 (87%) were 6 months of age or younger. Congenital anomalies were diagnosed as the cause of stridor in 170 (84%). Congenital laryngeal anomalies caused stridor in 157 (78%); congenital tracheal abnormalities were the cause in 13 (6%). The most common congenital laryngeal anomaly was laryngomalacia (94%). Forty-two (21%) of the 202 patients had at least 1 other anomaly that contributed to airway compromise. Half of all patients had laryngopharyngeal reflux, the most common associated condition. Of patients referred with a presumptive diagnosis by non-otolaryngologists, 28 of 94 (30%) were referred with erroneous presumptive diagnoses for which they were being treated, the most common of which was tracheomalacia.

Conclusions:

A standard, rational approach to the evaluation of stridor in infants facilitates management. A framework for evaluation is presented.

[A CASE OF ASPIRIN-EXACERBATED RESPIRATORY DISEASE COMPLICATED BY REFRACTORY VARIANT ANGINA, WHICH SHOWED EXCELLENT RESPONSE TO STEROID TREATMENT]

A 47-year-old woman with aspirin-exacerbated respiratory disease visited our hospital complaining of persistent chest pain that manifested in the evenings and early mornings. Holter monitoring revealed ST elevation during chest pain and coronary angiography showed coronary vasospasm, which led to the diagnosis of variant angina. Chest pain persisted despite administration of a coronary vasodilator. The patient experienced an increase in peripheral blood eosinophils during the clinical course and received prednisolone for the same, which resulted in the resolution of her chest pain. Prednisolone was therefore seen to be effective for treating variant angina that manifested as a non-respiratory tract symptom of aspirin-exacerbated respiratory disease.