Soda lime (5 liters) refers to a quantity of a chemical compound used primarily in medical anesthesia machines and breathing systems to absorb carbon dioxide (COâ‚‚) from exhaled gases. Soda lime is commonly used in closed or semi-closed breathing circuits during surgeries to ensure that the patient does not re-inhale COâ‚‚, which could lead to respiratory complications.
The compound consists of a mixture of sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)â‚‚), and sometimes potassium hydroxide (KOH). When exhaled air passes through the soda lime canister, it reacts with the COâ‚‚, effectively removing it from the breathing circuit.
Key uses of soda lime:
- Anesthesia machines: Removes COâ‚‚ from the patient’s exhaled air in a rebreathing circuit.
- Closed-circuit breathing systems: Used in spaces where rebreathing of gases is necessary, such as submarines or space environments.
The 5-liter quantity is typically used in hospitals and operating theaters to refill the canisters in anesthesia machines, ensuring patient safety during surgeries where controlled ventilation is required.
