2.0 The Body’s Alarm Bell: Understanding Cyanosis

The fundamental danger of asphyxiation is oxygen deprivation. Without a steady supply of oxygen, the brain and other vital organs begin to lose function, leading to irreversible damage or death in a matter of minutes. The body has a clear, visible way of signaling this emergency.

Cyanosis is a key visible indicator of severe oxygen deficiency where the skin may turn a purple color. This critical alarm bell appears most prominently in specific areas:

• Lips
• Fingertips
• Nail beds

The appearance of cyanosis signals an immediate and life-threatening emergency that requires intervention. Now that we can recognize this critical sign, let’s break down the different situations that can cause it.