2) Certain chest deformities prevent normal expansion of the chest. Explain why? 3) A male patient...

2) Certain chest deformities prevent normal expansion of the chest. Explain why?

3) A male patient presents with the following respiratory volumes and capacities TV= 500ml, ERV=600ml,IRV=2700ml.What is the patient VC? Are this values normal? if no, are they more consistent with an obstrive disease pattern?Explain.

Expert Solution

Answer 2.

The lung works by expanding and contracting when you inhale or exhale respectively. The rib cage and diaphragm play a major role in providing room for the expansion of the lungs. Deformation in rib cage muscles which fails in the expansion of it or failure of lowering of diaphragm might lead to a lower volume of air inside lungs.

Answer 3.

The vital capacity (VC) is the total exchangeable air in the system and is calculated by adding together tidal volume, inspiratory reserve volume, and expiratory reserve volume.

Respiratory Volumes	Description	Normal adult values
Tidal Volume (TV)	Volume of a resting breath	500 mL/breath
Inspiratory Reserve Volume (IRV)	Maximum volume that can be inhaled after a normal inhale	1900 – 3300 mL
Expiratory Reserve Volume (ERV)	Maximum volume that can be exhaled after a normal exhale	700 – 1200 mL
Vital Capacity (VC)	TV + IRV + ERV	3000 – 4600 mL

In given case VC comes near about=3800 ml(500+600+2700), In obstructive pulmonary disorders, it develops the resistance to airflow, thus increasing the time it takes to move air in and out of the lungs. Examples of obstructive disorders include bronchitis and asthma.

From the results, it can be inferred the patient is prominent to develop obstructive disease as his ERV falls below given standard value

gladiator answered 1 year ago

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