Download to read offline
Uploaded byKabin Maleku
Medicinal Gases and Vapours
The document discusses the role of gases in the body, focusing on oxygen and carbon dioxide, and their gas exchange processes during respiration. It details the composition of air, methods of oxygen transport in the blood, and the importance of medical oxygen purity. Additionally, it addresses the storage and analysis of both oxygen and carbon dioxide, emphasizing the need for proper handling due to their physiological roles and potential hazards.
More Related Content
Similar to Medicinal Gases and Vapours
Medicinal Gases and Vapours
- 1. Gases & Vapors Definition,role of gases in our body, focus on Oxygen, CO2 Inorganic anesthetics: Definition, Nitrous oxide Respiratory Stimulant: Definition, Ammonia solution, spirit of ammonia Phr. Kabin Maleku
- 2. Composition of theAir • We breathe earth’s atmosphere composed of: – Nitrogen (78%) – Oxygen (21%) – Carbon Dioxide (0.03%) – Argon and trace gases (0.93%) • Neon, Xenon, Krypton
- 3. • —Normal formlessstate of matter which at room temperature and pressure has low density/viscosity and readily and uniformly distributes itself throughout any container • Can be organic or inorganic Š • Examples:
- 4. Role of gases •Oxygen and • Carbondioxide
- 5. Gas Exchange • Externalrespiration occurs as a function of partial pressure differences in oxygen and carbon dioxide between the alveoli and the blood in the pulmonary capillaries. • Internal respiration is gas exchange that occurs at the level of body tissues . Similar to external respiration, internal respiration also occurs as simple diffusion due to a partial pressure gradient.
- 10. Oxygen Transportation • Oxygenis primarily transported through the blood by erythrocytes. These cells contain a metalloprotein called hemoglobin, which is composed of four subunits with a ring-like structure. Each subunit contains one atom of iron bound to a molecule of heme. Heme binds oxygen so that each hemoglobin molecule can bind up to four oxygen molecules
- 12. • Carbon dioxideis transported in blood by three different mechanisms: as dissolved carbon dioxide, as bicarbonate, or as carbaminohemoglobin.
- 14. Oxygen • Importance: Used: For Hypoxiaand anoxia Carbon monooxide poisoning
- 15. Medical oxygen • Oxygencontains not less than 99.5% V/V of oxygen. • It is produced by a purification process followed by a cryodistillation of the ambient air. • Assay: ≥ 99.5% V/V oxygen • Impurities: CO (≤ 5 ppm V/V ) , CO2(≤ 300 ppm V/V), H2O (≤ 67 ppm V/V) • Analysis:
- 16. Medical oxygen • Assay: •Principle: Gasometric • Apparatus: Nitrometer • Absorbing Agents: NH4Cl, NH4OH • Sample of O2 is passed to absorbing solution • NMT 1% gas is left unabsorbed in tube
- 17. Storage • Supports Combustion •Store under container, well ventilated place away from health and cold • Keep in clean and dry place • Away from combustible material
- 18. Carbon dioxide • CarbonDioxide contains not less than 99.5% V/V of CO2.in gaseous phase. • Infrared absorption spectrophotometry • Assay: 99.5% V/V CO2 • Impurities: • CO, NO/NO2 , Total Sulphur, Moisture •