calcium antagonist

简明释义

钙拮抗剂

英英释义

例句

1.A common side effect of calcium antagonists is swelling in the legs and ankles.

一种常见的钙拮抗剂副作用是腿部和脚踝的肿胀。

2.Many patients with hypertension benefit from taking a calcium antagonist as part of their treatment plan.

许多高血压患者在治疗方案中服用钙拮抗剂会有益处。

3.In some cases, a calcium antagonist may be combined with other medications for better control of hypertension.

在某些情况下，钙拮抗剂可能与其他药物联合使用，以更好地控制高血压。

4.Patients taking a calcium antagonist should be monitored for potential heart rhythm changes.

服用钙拮抗剂的患者应监测潜在的心律变化。

5.The doctor prescribed a calcium antagonist to help lower the patient's blood pressure.

医生开了一种钙拮抗剂来帮助降低患者的血压。

作文

Calcium antagonists, also known as calcium channel blockers, are a class of medications that play a crucial role in the management of various cardiovascular conditions. These drugs work by inhibiting the influx of calcium ions into cardiac and smooth muscle cells through voltage-gated calcium channels. By doing so, they effectively reduce the contractility of the heart and promote vasodilation, which leads to a decrease in blood pressure. In this essay, we will explore the mechanisms, uses, and benefits of calcium antagonist (钙拮抗剂) therapy, as well as potential side effects associated with their use.The primary mechanism of action of calcium antagonists (钙拮抗剂) is their ability to block calcium channels. Calcium plays a vital role in muscle contraction, including the heart muscle. When calcium enters the cells, it triggers the contraction process, making the heart pump harder. By blocking these channels, calcium antagonists (钙拮抗剂) reduce the amount of calcium available for contraction, leading to a decrease in heart rate and force of contraction. This is particularly beneficial for patients suffering from hypertension, angina, or certain arrhythmias.There are several types of calcium antagonists (钙拮抗剂), including dihydropyridines, non-dihydropyridines, and phenylalkylamines. Dihydropyridines, such as amlodipine and nifedipine, primarily affect vascular smooth muscle, leading to significant vasodilation and reduced blood pressure. Non-dihydropyridines, like verapamil and diltiazem, have more pronounced effects on the heart itself, slowing down the heart rate and decreasing myocardial oxygen demand. Each type of calcium antagonist (钙拮抗剂) has its specific indications, and the choice of drug often depends on the patient's condition and overall health status.The therapeutic applications of calcium antagonists (钙拮抗剂) extend beyond hypertension and angina. They are also used in the treatment of certain types of arrhythmias, such as atrial fibrillation and supraventricular tachycardia. Additionally, these medications can be helpful in managing conditions like Raynaud's phenomenon and migraines due to their vasodilatory effects. The versatility of calcium antagonists (钙拮抗剂) makes them an essential component of modern cardiovascular therapy.Despite their numerous benefits, calcium antagonists (钙拮抗剂) are not without potential side effects. Common adverse effects include peripheral edema, headache, flushing, and constipation. In some cases, particularly with non-dihydropyridines, patients may experience bradycardia or heart block. It is essential for healthcare providers to monitor patients closely and adjust dosages as necessary to minimize these risks while maximizing therapeutic outcomes.In conclusion, calcium antagonists (钙拮抗剂) represent a vital class of medications in the treatment of various cardiovascular diseases. Their ability to inhibit calcium entry into cells leads to significant therapeutic effects, including reduced blood pressure, decreased heart rate, and improved blood flow. As with any medication, careful consideration of the benefits and risks is necessary to ensure optimal patient outcomes. Ongoing research continues to uncover new applications for calcium antagonists (钙拮抗剂), further solidifying their role in the management of cardiovascular health.