nonpolar covalent bond. (physical chemistry). A bond in which a pair of electrons is distributed or shared equally between two atoms. 1  Facebook.2  Twitter.onpolar covalent bond. (physical chemistry). A bond in which a pair of electrons is distributed or shared equally between two atoms. 1  Facebook.
When is a barrel chest a sign of a disease process? Chronic obstructive pulmonary disease (COPD) is the most common instance in which a barrel chest will occur. In these cases, itâs a sign of the lungs being over-expanded. This is caused by the loss of elasticity and results in the person having hyper-inflated lungs.
Having too much carbon dioxide in the blood due to respiratory failure can cause: Excessive sleepiness or drowsiness; Rapid breathing; Rapid heartbeat; In many cases, the patientâs severe symptom â or symptoms â are caused by a combination of too little oxygen and too much carbon dioxide in the blood. How does COPD cause respiratory failure? 4 There are several ways that COPD can cause respiratory failure, especially during the later disease stages. Chronic bronchitis can cause the airways to become blocked by swelling and excess mucus.