Edexcel IGCSE Practice Test 2025: Changes in Medicine 1845-1945

The advancement in methods to fight infection during World War I was greatly influenced by the development and application of various medical practices. The use of saline solutions to help protect against infection is a crucial component in this advancement. Saline solutions were used to clean wounds and help maintain hydration in injured soldiers, which played a significant role in reducing infection rates in the field.

By utilizing saline solutions, medical personnel could effectively wash out dirt and debris from wounds, which lowered the risk of bacteria causing infections. This practice also aided in managing the physiological state of injured soldiers, allowing for better overall care and recovery. The importance of hydration and cleanliness became apparent during the war, leading to this significant application as a means to combat infections.

In contrast, the other options address different aspects of medical advancement during the war without focusing specifically on infection control through saline solutions. Antiseptic methods, while crucial, were more widely established prior to WW1. The development of vaccines and new surgical instruments were also significant but not directly tied to the immediate advancements made in preventing infections during the conflict.