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What are the contraindications of beta-blockers?

Traditional contraindications to beta-blockers are peripheral vascular diseases, diabetes mellitus, chronic obstructive pulmonary disease (COPD) and asthma.

What are the contraindications of beta-blockers?

Traditional contraindications to beta-blockers are peripheral vascular diseases, diabetes mellitus, chronic obstructive pulmonary disease (COPD) and asthma.

Which B blockers are Cardioselective?

Examples of cardioselective beta blockers include atenolol, acebutolol, bisoprolol, esmolol, and metoprolol. These medications are sometimes combined with other blood pressure lowering medications, including vasodilators, ACE inhibitors, diuretics, alpha blockers, and calcium channel blockers.

Do beta-blockers block beta 2 receptors?

Once beta-blockers bind to the B1 and B2 receptors, they inhibit these effects. Therefore, the chronotropic and inotropic effects on the heart undergo inhibition, and the heart rate slows down as a result.

Are beta-blockers contraindicated in sick sinus syndrome?

Abstract. Beta blockers in patients with sick sinus syndrome (SSS) may prevent supraventricular arrhythmias, systemic hypertension and myocardial ischemia, but may cause excessive depression of sinus node function.

Can atenolol cause sick sinus syndrome?

Atenolol-induced suppression of sinus automaticity or sinoatrial exit block is the most likely cause of dizziness and near syncope in our patient.

Is Bystolic Cardioselective?

Nebivolol (Bystolic) is a cardioselective beta 1 (beta(1))-adrenergic receptor blocker with endothelium-dependent vasodilating properties.

Why are beta-blockers banned?

Beta blockers reduce sympathetic effects, such as increases in heart rate and blood pressure, which often are heightened during athletic competition. WADA explicitly prohibits beta blockers in sports that are reliant on stability of the extremities, such as archery, racing, billiards, darts, golf, shooting and fishing.

What happens when beta-2 receptors are blocked?

If beta-2 receptors are blocked then this leads to coronary and peripheral vasoconstriction. Thus drugs which are relatively specific for beta-1 receptors, “cardioselective”, have been developed e.g. atenolol and metoprolol.

What is the renal sinus?

The renal sinus is a fat-filled compartment of the kidney. The renal sinus is a fatty compartment located within the medial aspect of the kidney.

What is the difference between renal sinus and hilum?

Anatomical terminology. The renal sinus is a cavity within the kidney which is occupied by the renal pelvis, renal calyces, blood vessels, nerves and fat. The renal hilum extends into a large cavity within the kidney occupied by the renal vessels, minor renal calyces, major renal calyces, renal pelvis and some adipose tissue.

What is the treatment for renal sinus tumors?

Computed tomography, magnetic resonance imaging and intravenous urography are the best imaging examination methods for differential diagnosis. In conclusion, surgery is the usual approach for the treatment of renal sinus tumors and radical nephrectomy should be performed for malignant tumors.

Can renal sinus infection lead to renal cyst?

Renal sinus infection, or commonly known as kidney or upper urinary tract infection, can cause serious medical problems when not addressed immediately. It might even lead to renal sinus cyst that can cause life-threatening conditions and serious health reverses.