Which of the following is non selective b1 blocker.. labitolol

Which of the following is non selective b1 blocker?

• a- labitolol
• b- terazosine
• c- cloridine
• d- captopril
• e- verapamil

The correct answer is a- labitolol.

Labetalol is a non-selective beta-blocker, which means that it blocks both beta-1 and beta-2 receptors. Beta-1 receptors are found primarily in the heart, while beta-2 receptors are found in the lungs, blood vessels, and smooth muscles. As a result, labetalol can slow the heart rate, decrease blood pressure, and relax smooth muscles.

The other options are not non-selective beta-blockers:

- Terazosin:

is an alpha-blocker, which means that it blocks alpha-1 receptors. Alpha-1 receptors are found in the smooth muscles of the bladder and prostate gland. As a result, terazosin can relax the smooth muscles of the bladder and prostate gland, which can improve urinary flow and symptoms of benign prostatic hyperplasia (BPH).

- Clonidine:

is an alpha-2 agonist, which means that it activates alpha-2 receptors. Alpha-2 receptors are found in the central nervous system and blood vessels. As a result, clonidine can lower blood pressure by decreasing heart rate and blood vessel constriction.

- Captopril:

is an angiotensin-converting enzyme (ACE) inhibitor. ACE is an enzyme that helps to convert angiotensin I into angiotensin II, a powerful vasoconstrictor. As a result, ACE inhibitors lower blood pressure by decreasing the production of angiotensin II.

- Verapamil:

is a calcium channel blocker. Calcium channels are channels in the cell membrane that allow calcium ions to enter the cell. Calcium ions are important for many cellular processes, including muscle contraction. As a result, calcium channel blockers can be used to treat a variety of conditions, such as angina, hypertension, and certain types of arrhythmias.