| dc.description.abstract | The lungs are respiratory organs connected to the respiratory and circulatory systems.
Like other human body organs, the lungs are susceptible to various diseases. There are
diverse types of diseases that can affect lung health. COPD is defined as lung
inflammation that causes continuous airflow limitation. Spirometry is a common
examination performed to assess lung function in COPD patients. Many patients have to
repeat the test multiple times due to their limited breathing capacity. Meanwhile, CT scan
results of COPD patients show an increase in dimensions of the thoracic cage, resulting
in a barrel-shaped appearance of the chest cavity (barrel chest). Based on this
observation, the severity of the disease can be assessed and monitored. Therefore, a
measurement system for chest cavity expansion consisting of a measurement device and
an application is proposed to monitor the progression of COPD in patients. However,
this research focuses only on the design and construction of the measurement device. A
qualitative approach was employed to describe the design and testing results of the
developed measurement device. The Engineering Design Process method was used as a
research approach to address complex problems in the context of technical design. The
research resulted in a design for the measurement device with dimensions of 1.2 × 1.2 ×
2 m. The testing of the measurement device demonstrated a functional system with an
accuracy rate of 92.7017% and a precision rate of 99.4614% for phantom subject testing,
as well as a precision rate of 98.1715% for human subject testing. Furthermore, three
interrelated variables are involved in the examination using the measurement device,
namely barrel chest ratio, body mass index, and severity classification. | en_US |
