A research study used a dyspnea scale. What was measured? Group of answer choices spirometry changes in resting expiratory level participant's report of breathing challenges decreases to functional residual capacity of lungs clinician's perception of changes to stridor's pitch
Added by Lisa C.
Step 1
Let's think step by step. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 100 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Case R 14 Respiratory A 17-year-old student has experienced reversible, periodic attacks of chest tightness with coughing, wheezing, and hyperpnea. She states that expiration is more difficult than inspiration. She is most comfortable sitting forward with arms leaning on some support. X-rays revealed mild overinflation of the chest. Results from laboratory and pulmonary function tests are: Respiratory rate: 20 breaths/min Vital capacity: 2.9L FEV1: 1.4L FEV1/FVC: 56% Functional residual capacity: 3.89 L Total lung capacity: 6.82 L PaO2: 70 mm Hg PaCO2: 26 mm Hg Pulse: 108 b/min BP: 120/76 mm Hg FEV1 is the amount of air exhaled in one second. FVC is the total amount of air exhaled. PaO2 is arterial blood oxygen partial pressure. PaCO2 is arterial blood carbon dioxide partial pressure. Intermittent use of a bronchial smooth muscle dilator (1:1000 epinephrine by nebulizer) for several days caused marked improvement. Following therapy, the results from laboratory and pulmonary function tests are: Vital capacity: 4.15L FEV1: 3.1L FEV1/FVC: >75% Functional residual capacity: 3.7L Total lung capacity: 5.96 L PaO2: 89 mm Hg PaCO2: 38 mm Hg Pulse: 129 b/min BP: 122/78 mm Hg
Adi S.
1- The Buteyko method is a shallow breathing technique developed by Konstantin Buteyko, a Russian doctor, in 1952. Anecdotal evidence suggests that the Buteyko method can reduce asthma symptoms and improve quality of life. In a scientific study to determine the effectiveness of this method, researchers recruited 600 asthma patients aged 18-69 who relied on medication for asthma treatment. These patients were randomly split into two research groups: one practiced the Buteyko method and the other did not. Patients were scored on quality of life, activity, asthma symptoms, and medication reduction on a scale from 0 to 10. On average, the participants in the Buteyko group experienced a significant reduction in asthma symptoms and an improvement in quality of life. (a) Identify the main research question of the study. (b) Who are the subjects in this study, and how many are included? (c) What are the variables in the study? Identify each variable as numerical or categorical. If numerical, state whether the variable is discrete or continuous. If categorical, state whether the variable is ordinal.
Sri K.
A Randomized Control Trial was conducted at a children's hospital to study the effects of 2 different medications to treat asthma. All the participants in the study were age 5 to 10 years old, and all had been diagnosed with asthma within the last year. A spirometry test was conducted on each child before they were randomized to a treatment group. A spirometry test measures the amount of air that a person can blow out of their lungs. A low reading indicates that the airway is obstructed, and the asthma is more severe. After they were randomized to one of the treatment groups, they took the medications assigned to them for one month. Then, they took the spirometry test again and received the following readings: TABLE 1: Spirometry Readings by Treatment Group Group A Treatment A 1 45 2 65 3 34 4 54 5 41 6 53 7 54 8 64 9 47 10 34 11 44 12 35 13 66 14 70 Group B Treatment B 1 67 2 48 3 55 4 74 5 66 6 47 7 52 8 86 9 55 10 64 11 67 12 46 13 39 14 64 Group C Treatment C (placebo) 1 64 2 39 3 26 4 57 5 64 6 44 7 66 8 41 9 48 10 57 11 54 12 55 13 58 14 47 The mean spirometry readings for each of the three groups were: 2. In Question 1 above, one of the treatments produced similar results to the placebo. What do you conclude about this treatment? Is it effective? (Statistical tests are normally used to test differences between groups, but that instruction will come later in the semester - just use your analysis of the means to answer this question).
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD
