Pneumothorax - In a pneumothorax, air collects in the pleural cavity. It may be caused by trauma to the chest, chest surgery, and COPD among other causes. When a pneumothorax is small, it may simply be observed to see if the air is reabsorbed.
This ratio is determined by dividing the HDL cholesterol into the total cholesterol. If a person has a total cholesterol of 200 mg/dL and an HDL cholesterol of 40 mg/dL, his or her total/HDL cholesterol ratio would be 5:1. The goal is to keep this ratio below 5:1, with the ideal being below 3.5:1.his ratio is determined by dividing the HDL cholesterol into the total cholesterol. If a person has a total cholesterol of 200 mg/dL and an HDL cholesterol of 40 mg/dL, his or her total/HDL cholesterol ratio would be 5:1. The goal is to keep this ratio below 5:1, with the ideal being below 3.5:1.
Total Cholesterol. Total cholesterol is the total measurement of all of the different types of cholesterol. This means the total from VLDL, LDL and HDL cholesterol. For a healthy adult, total cholesterol levels should remain less than 200 mg/dl.DL Cholesterol. Low-density lipoprotein or LDL cholesterol is also known as the bad cholesterol. LDL acts as an inter-body carrier of cholesterol. Its role is to transport cholesterol from the liver to skeletal muscle and fat. LDL cholesterol makes up the majority of your cholesterol.