A client is prescribed a thiazide diuretic for the management of hypertension.
The nurse plans to assess the client for allergy to?

Intermittent claudication is a condition in which leg pain is produced upon increased activity and ischemia to tissues, but then the pain is reduced with rest. This is because the blood flow to the leg muscles is insufficient to meet the increased demand during exercise, but adequate at rest.Intermittent claudication is a common symptom of peripheral artery disease (PAD), which is a narrowing of the arteries that supply blood to the legs.

Choice B, sporadic ischemia, is wrong because it is not a specific medical term for a condition that causes leg pain.

Ischemia means reduced blood flow to a part of the body, which can cause pain, but it can be caused by various factors and affect different organs.

Choice C, angina, is wrong because it is a term for chest pain caused by reduced blood flow to the heart, not the legs.

Angina can also be triggered by physical activity and relieved by rest, but it is not related to PAD or leg ischemia.

Choice D, restless leg syndrome, is wrong because it is a condition that causes an uncomfortable urge to move the legs, usually at night or when lying down.

Restless leg syndrome does not cause pain or ischemia in the legs, and it is not improved by rest.It is thought to be related to a problem with the nervous system or iron deficiency.

Vitamin K is the antidote for warfarin toxicity because it can reverse the effects of warfarin by restoring the clotting factors.Warfarin is an oral anticoagulant that works by inhibiting vitamin K epoxide reductase, an enzyme that activates vitamin K in the body.Vitamin K is needed for the synthesis of active coagulation factors, such as II, VII, IX and X.By blocking vitamin K, warfarin reduces the blood’s clotting activity and prevents the formation of blood clots.

Choice A is wrong because vitamin B12 is not involved in the coagulation cascade.Vitamin B12 is mainly involved in DNA synthesis, red blood cell production and nerve function.

Choice C is wrong because calcium gluconate is not an antidote for warfarin toxicity.Calcium gluconate is used to treat low blood calcium levels or hypocalcemia.Calcium is also a cofactor for some coagulation factors, but it does not reverse the effects of warfarin.

Choice D is wrong because protamine sulfate is not an antidote for warfarin toxicity.

Protamine sulfate is used to reverse the effects of heparin, another type of anticoagulant that works by inhibiting thrombin and factor Xa.

Protamine sulfate does not affect the vitamin K-dependent coagulation factors that are inhibited by warfarin.

Normal ranges for coagulation tests that are affected by warfarin are:

• Prothrombin time (PT): 11 to 13.5 seconds

• International normalized ratio (INR): 0.8 to 1.2

• Activated partial thromboplastin time (aPTT): 25 to 35 seconds