OBJECTIVES To describe a multidimensional symptom profile in patients with stable chronic obstructive pulmonary disease (COPD) and determine whether symptom experience differed between patients with moderate or severe airflow limitations. BACKGROUND Patients with severe airflow limitation experience numerous symptoms, but little is known regarding patients with moderate airflow limitation. ...

The purpose of this study was to determine the effects of vowel height and vocal intensity on the magnitude of anticipatory nasal airflow in normal speakers when producing vowel-nasal-vowel (VNV) sequences. Measurements of nasal and oral airflow were obtained from 15 men and 12 women with normal speech during production of the VNV sequences /ini/ and /ana/ at low, medium, and high intensity lev...

Tide-induced hydraulic head fluctuation results in significant airflow above the water table if the aquifer is air-confined, for example, if the aquifer is capped by low permeability materials. Hypothetical studies on the interaction between tidal fluctuation and airflow in coastal aquifers are carried out using an air–water two-phase numerical model. The results show that both the amplitude of...

This paper describes the development of a system for measuring airflow moving past the head of a humanoid robot. In recent years there has been growing interest in the development of humanoid robots. To function in a safe and efficient manner a humanoid robot must be 'aware' of its surroundings. For both a human and a humanoid robot airflow can provide useful information. Airflow sensors measur...

BACKGROUND Both airflow limitation and smoking are established cardiovascular risk factors. However, their interaction as risk factors for the development of atherosclerosis in coronary artery disease patients remains unclear. OBJECTIVES To evaluate the effect of the interaction between airflow limitation and smoking status on the severity of carotid atherosclerosis. METHODS We categorized ...

Controversies exist regarding the resection or preservation of the middle turbinate (MT) during functional endoscopic sinus surgery. Any MT resection will perturb nasal airflow and may affect the mucociliary dynamics of the osteomeatal complex. Neither rhinometry nor computed tomography (CT) can adequately quantify nasal airflow pattern changes following surgery. This study explores the feasibi...

Rehabilitation after laryngectomy includes more and more the use of airflow-regulating devices such as shunt valves (SVs), tracheostoma valves (TSVs), and heat and moisture exchange (HME) filters. In determining the quality of those devices, airflow resistance is a very important factor. It is currently defined as pressure drop divided by airflow. However, for most applications, this definition...

PURPOSE There are still evidence gaps on the prevalence of airflow limitation in Japan. The purpose of this survey was to estimate the prevalence of airflow limitation among healthy subjects in Japan and to show what proportion of subjects with airflow limitation had been diagnosed with chronic obstructive pulmonary disease (COPD). SUBJECTS AND METHODS This was an observational, cross-section...