Which role is attributed to the base in the acid-base balance?

Choice A rationale:

0.459% saline is a hypotonic solution with a lower concentration of salt than the normal physiological range (0.9% NaCl) Hypotonic solutions can cause red blood cells to swell and potentially burst due to the osmotic imbalance, making it inappropriate for hypovolemic shock.

Choice B rationale:

0.9% NaCl, also known as normal saline, is an isotonic solution with a salt concentration similar to the body's own fluids. Isotonic solutions are ideal for hypovolemic shock as they help to expand the intravascular volume without causing significant shifts of fluid and electrolytes within the body compartments.

Choice C rationale:

5% dextrose in 0.45% saline is a hypotonic solution with a low salt concentration. While it provides some fluid replacement, it doesn't address the electrolyte imbalance adequately, which is crucial in hypovolemic shock.

Choice D rationale:

Dextran is a plasma volume expander but is not the first-line choice for hypovolemic shock. It might be used in certain situations, but isotonic crystalloids like 0.9% NaCl are preferred for rapid volume expansion and stabilization of the patient.

Choice A rationale:

Flossing using thick tape floss can cause trauma to the gums and may lead to bleeding in patients with thrombocytopenia. Patients with low platelet counts are at risk of excessive bleeding from minor injuries, and using thick tape floss could potentially harm the gums and exacerbate bleeding.

Choice B rationale:

Shaving using an electric razor is a safe option for patients with thrombocytopenia. Electric razors do not pose a significant risk of cuts or nicks, reducing the likelihood of bleeding, which is crucial for patients with low platelet counts.

Choice C rationale:

Wearing flip-flops to go walking may not be the safest option for a patient with thrombocytopenia. If the patient accidentally stubs their toe or injures their foot while wearing flip-flops, it could lead to bleeding. Closed-toe, comfortable shoes provide better protection against foot injuries.

Choice D rationale:

Brushing using a stiff-bristle toothbrush can be harmful to the gums, especially for patients with thrombocytopenia. Stiff-bristle toothbrushes can cause gum irritation and bleeding. Patients with low platelet counts should use a soft-bristle toothbrush to minimize the risk of gum injury.