TLCO (Transfer Factor for Lung diffusion of Carbon Monoxide) is a test used to determine how well the lungs can transfer gas, such as carbon monoxide, from the air we breathe into the blood. This is one of the most important functions of the lungs, as it is crucial for our body to be able to transfer oxygen from the air into the bloodstream. The TLCO test can help doctors diagnose various lung diseases, such as COPD (Chronic Obstructive Pulmonary Disease), asthma, pulmonary fibrosis, or pulmonary embolism. During the test, the patient takes a deep breath of a mixture of gases, including a small amount of carbon monoxide, and then holds their breath for a few seconds before exhaling. From the results of the test, doctors can determine how well the lungs are functioning.

The Tiffeneau index (TI) is the ratio between FEV1 and FVC. In spirometry, we measure the forced vital capacity (FVC), which represents the volume of exhaled air after a maximum long inhalation. When performing FVC, the forced expiratory volume in the first second (FEV1) is also measured, which is the volume of air that a person exhales in the first second of FVC. The ratio between FEV1 and FVC is called the Tiffeneau index, which in a healthy person is above 75%, meaning that a person with healthy lungs can exhale 3/4 of the air from the lungs in the first second of forced exhalation. These values vary depending on various factors, such as age, gender, and body height and weight.

TI is an acronym for Tiffneau's index. Tiffneau's index (TI) is the ratio between FEV1 and FVC. In spirometry, we measure Forced Vital Capacity (FVC), which represents the volume of exhaled air after a maximum long inhale. When performing FVC, Forced Expiratory Volume in the first second (FEV1) is also measured, which is the volume of air that a person exhales in the first second of FVC. The ratio between FEV1 and FVC is called Tiffneau's index, which in a healthy person is above 75%, meaning that a person with healthy lungs can exhale 3/4 of the air from the lungs in the first second of forced exhalation. These values may vary depending on various factors, such as age, gender, and body height and weight.

The patient who breathes heavily and too quickly is considered tachypneic.

It refers to the total amount of immunoglobulins E. IgE is an acronym for immunoglobulins E. IgE is produced by cells, which we call plasma cells. IgE are an important part of the immune response. They participate in the defense of the body against parasites. IgE also play an important role in Type I hypersensitivity, which we encounter in asthma, allergic rhinitis, food allergy, atopic dermatitis. IgE also play an important role in severe allergic reactions such as anaphylactic reaction.