please give me clear enough answer, do not repeat information Bernice Mottram is
ID: 3505621 • Letter: P
Question
please give me clear enough answer, do not repeat information
Bernice Mottram is a 70 year old female. Bernice has smoked since she was 25 years old, smoking on average 10 cigarettes per day. Bernice has been finding that in the last 2 years, she fatigues easily, even with light exertion, experiencing significant shortness of breath. On consultation with her doctor for her increasing shortness of breath, Bernice was noted to have a prolonged expiratory phase in her breathing, increased anterior-posterior chest diameter and cyanosis of the nail beds. Bernice also describes a having a mucous producing cough that lasted for 3 months during winter, and this has happened every winter for the last 3 years. Bernice was referred to the respiratory investigations department, in which pulmonary function tests were performed. Her results were as follows TABLE Testing parameter Test findings (in relation to normal values) Decreased Increased Vital capacity Residual volume Functional residual capacity Increased Expiratory flow rate Arterial PO O, saturation Arterial PCO Decreased 48mmHg (normal > 100mmHg) 78% (normal >95%) 69mmHg (normalExplanation / Answer
Obstructive diseases are characterized by irreversible airflow obstruction of the large and small airways.
Vital capacity is the maximum amount of air expelled after maximum inhalation. Residual volume is the amount of air remaining in the lungs even after maximal exhalation.
In a person with COPD, the person is unable to exhale air out due to the obstruction of the airway. This causes a decrease in the vital capacity. The inability to exhale out the air increases the residual volume. This is characteristic of the disease.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.