What is the drug that relieves the heart s post and preload by simultaneously dilating the peripher

Hello, according to the different types of vasodilators that dilate blood vessels, vasodilators are often divided into 3 categories:

Arteriolar dilators: Commonly used preparations are: phentolamine.

hydralazine, nifepyridine. Dilate systemic arterioles, reduce peripheral resistance, and significantly reduce left ventricular afterload. As left ventricular ejection resistance decreases, cardiac output may increase. It is suitable for patients with increased peripheral resistance due to various reasons, and is contraindicated for patients with severe cardiac hypovolution.

Small venous dilators: commonly used preparations are: nitroglycerin.

Eliminate heartache, etc. Dilation of venules can redistribute blood to the venous system, so that the amount of blood returning to the heart is rapidly reduced, the cardiac preload is reduced, and the pulmonary stasis is reduced, thereby improving the symptoms of left heart failure. Although it can improve the symptoms of pulmonary stasis, the cardiac index does not increase.

It is suitable for patients with increased lung wedge pressure, and it is forbidden for patients with insufficient cardiac preload.

Simultaneous dilation of arterioles and venous agents: nitroprusside is commonly used.

Mercaptoproranic acid, prazosin, etc. Because it can dilate arterioles and venules at the same time, it is suitable for cardiac anterior and post-load.

are elevated in patients.

Stick to walking for a certain amount of time every day, and several studies have proven that walking is the best exercise to prevent varicose veins. With each walk, the soles of the feet act like a pump to pump the blood back, preventing the pressure of blood backflow.

Answer]: C-prazosin can dilate peripheral arteries and veins at the same time, reduce cardiac preload and afterload, and improve heart grip function. Spironolactone is an aldosterone receptor antagonist, which reduces the load on the heart and alleviates congestion symptoms through sodium excretion and drainage; It also has the effect of dilating arterioles.

Metoprolol is a receptor antagonist, which antagonizes the effect of sympathetic excitability enhancement in the compensatory mechanism, inhibits myocardial remodeling, and has no vasodilating effect. Digoxin is a digitalis drug, which can enhance myocardial contractility and has no vasodilating effect. Nitroglycerin is the most effective and fastest-acting drug to terminate angina attacks, which can dilate coronary arteries and increase coronary kinetic socks to open the pulse blood flow bridge, such as; Peripheral blood vessels, which only dilate the veins, reduce the cardiac preload.

Answer]: C-prazosin can dilate arteries and veins at the same time, reduce cardiac preload and afterload, reduce left ventricular end-diastolic pressure, improve cardiac function, and ** heart failure has a rapid onset of action. Spironolactone is an aldosterone receptor antagonist, which reduces the load of the heart and alleviates the symptoms of congestion by excreting sodium and draining the beam. Fluid-transported metoprolol is a receptor blocker, which can counteract the enhanced sympathetic excitability in the compensatory mechanism; Digoxin is digitalis, which can enhance myocardial stool contraction and inhibit the cardiac conduction system.

Preload refers to the resistance or load encountered before the myocardium contracts, i.e., the volume load or pressure on the ventricles during the end of diastole is the preload. Preload is related to venous return, and within a certain range, if the venous return increases, the preload increases. So, what are the factors that affect venous return?

Excessive sweating, diarrhea, and blood loss lead to a decrease in the effective circulating blood volume, which can reduce the preload.

Triamterene is a potassium-sparing diuretic, and dihydrogramurithiazide, i.e., hydrochlorothiazide, is a diuretic and an antihypertensive drug, both of which can reduce the pre-compound.

Since you are not writing all the options, the answer should be found in c d.

Answer]: Hydrochlorothiazide is a diuretic, which reduces the volume load of the heart, i.e., preload, through sodium excretion and diuresis.

Answer: E

Nitroprusside can dilate venous vessels and arterioles at the same time, reduce the pre- and post-load of the heart, and has a good effect on heart failure caused by myocardial infarction and hypertension