Karl Vierordt introduced which index in 1877?

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Multiple Choice

Karl Vierordt introduced which index in 1877?

The question is about who first used a measurable time to reflect the blood’s ability to clot. Karl Vierordt introduced the idea of using coagulation time as an index of the blood’s coagulative power. By observing how long it takes for blood to form a clot under standardized conditions, he provided a simple, quantitative way to gauge clotting tendency. This concept laid the groundwork for later, more refined coagulation tests. The other options describe different measurements: hematocrit is a measure of the proportion of red blood cells in blood; platelet aggregation tests assess how platelets clump together; fibrinogen level measures the amount of fibrinogen, a clotting factor. None of these were Vierordt’s contribution, whereas coagulation time as an index of coagulative power directly reflects his work.

The question is about who first used a measurable time to reflect the blood’s ability to clot. Karl Vierordt introduced the idea of using coagulation time as an index of the blood’s coagulative power. By observing how long it takes for blood to form a clot under standardized conditions, he provided a simple, quantitative way to gauge clotting tendency. This concept laid the groundwork for later, more refined coagulation tests.

The other options describe different measurements: hematocrit is a measure of the proportion of red blood cells in blood; platelet aggregation tests assess how platelets clump together; fibrinogen level measures the amount of fibrinogen, a clotting factor. None of these were Vierordt’s contribution, whereas coagulation time as an index of coagulative power directly reflects his work.

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