Blood loss due to a moderate hemorrhage has several adverse effects on patient wellbeing. why would administering iv fluids alone not be sufficient to return a patient to health?

Along with fluid components, an excessive amount of blood cells is also lost. That is why a patient needs oxygenated red blood cells along with IV fluids for a complete recovery.

Explanation

Administering IV fluids is an essential treatment option in case of trauma and injuries. These fluids alone can cause more harm than good to a patient. They can hydrate the brain, increase pressure in the heart and cause lung congestion.

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.