Престилол

Uses

Bisoprolol is used for the treatment of hypertension, angina and heart failure. It may be used alone or in combination with other antihypertensive agents.

Perindopril is a long-acting ACE (Angiotensin Converting Enzyme) inhibitor and is used for Essential hypertension, Stable coronary artery disease, Congestive heart failure.

Престилол is also used to associated treatment for these conditions: Atrial Fibrillation, Cardiovascular Events, Chronic Stable Angina Pectoris, Heart Failure, High Blood Pressure (Hypertension), Mild Hypertension, Premature Ventricular Contraction (PVC), Supraventricular Arrhythmias, Moderate Hypertension, Perioperative arrhythmiaCardiovascular Events, Diabetic Nephropathy, High Blood Pressure (Hypertension), Hypertension,Essential, Myocardial Infarction, NYHA Class I Congestive heart failure, Stroke, Chronic heart failure with reduced ejection fraction (NYHA Class II), Chronic heart failure with reduced ejection fraction (NYHA Class III)

How Престилол works

Though the mechanism of action of bisoprolol has not been fully elucidated in hypertension, it is thought that therapeutic effects are achieved through the antagonism of β-1adrenoceptors to result in lower cardiac output. Bisoprolol is a competitive, cardioselective β1-adrenergic antagonist. When β1-receptors (located mainly in the heart) are activated by adrenergic neurotransmitters such as epinephrine, both the blood pressure and heart rate increase, leading to greater cardiovascular work, increasing the demand for oxygen. Bisoprolol reduces cardiac workload by decreasing contractility and the need for oxygen through competitive inhibition of β1-adrenergic receptors.

Bisoprolol is also thought to reduce the output of renin in the kidneys, which normally increases blood pressure. Additionally, some central nervous system effects of bisoprolol may include diminishing sympathetic nervous system output from the brain, decreasing blood pressure and heart rate.

There are two isoforms of ACE: the somatic isoform, which exists as a glycoprotein comprised of a single polypeptide chain of 1277; and the testicular isoform, which has a lower molecular mass and is thought to play a role in sperm maturation and binding of sperm to the oviduct epithelium. Somatic ACE has two functionally active domains, N and C, which arise from tandem gene duplication. Although the two domains have high sequence similarity, they play distinct physiological roles. The C-domain is predominantly involved in blood pressure regulation while the N-domain plays a role in hematopoietic stem cell differentiation and proliferation. ACE inhibitors bind to and inhibit the activity of both domains, but have much greater affinity for and inhibitory activity against the C-domain. Perindoprilat, the active metabolite of perindopril, competes with ATI for binding to ACE and inhibits and enzymatic proteolysis of ATI to ATII. Decreasing ATII levels in the body decreases blood pressure by inhibiting the pressor effects of ATII as described in the Pharmacology section above. Perindopril also causes an increase in plasma renin activity likely due to a loss of feedback inhibition mediated by ATII on the release of renin and/or stimulation of reflex mechanisms via baroreceptors.

Dosage

Престилол dosage

The usual starting dose is 5 mg once daily. In some patients, 2.5 mg may be an appropriate starting dose. If the antihypertensive effect of 5 mg is inadequate, the dose may be increased to 10 mg and then, if necessary, to 20 mg once daily.

For heart failure: Initially 1.25 mg once daily (in the morning) for 1 week then, if well tolerated, increased to 2.5 mg once daily for 1 week, then 3.75 mg once daily for 1 week, then 5 mg once daily for 4 weeks, then 7.5 mg once daily for 4 weeks, then 10 mg once daily; max. 10 mg daily.

Hypertension: One Perindopril 4 tablet once daily preferably in the morning. If necessary, the dose may be increased to 8 mg after 1 month of treatment. Perindopril should be taken before food.

Stable coronary artery disease: Perindopril 4 once daily for two weeks, then increased to 8 mg once daily, depending on renal function and provided that the 4 mg dose is well tolerated. Elderly patients should receive Perindopril 2 mg once daily for one week, then Perindopril 4 once daily the next week, before increasing the dose up to 8 mg once daily, depending on renal, function. The dose should be increased only if the previous lower dose is well tolerated.

Congestive heart failure: Perindopril should be started under close medical supervision at a starting dose of 2 mg in the morning. If necessary dose may be increased to 4 mg.

Elderly patients: Start treatment at Perindopril 2 mg daily.

Side Effects

Diarrhoea, dizziness, drowsiness, fatigue, headache, lightheadedness, nausea, sleeplessness, unusual tiredness, weakness, Severe allergic reactions (rash, hives, itching, difficulty breathing, tightness in the chest, swelling of the mouth, face, lips, or tongue), chest pain, difficulty breathing, lightheadedness or dizziness when rising from a lying or sitting position, very slow heartbeat.

Rare and mild: usually at the start of treatment cough, fatigue, asthenia, headache, disturbances of mood and/or sleep have been reported.

Less often: Taste impairment, epigastric discomfort, nausea, abdominal pain and rash. Reversible increase in blood urea and creatinine may be observed. Proteinuria has occurred in some patients.

Rarely: Angioneurotic edema and decrease in hemoglobin, red cells and platelets have been reported.

Toxicity

LD50 information Oral LD50 of bisoprolol in the mouse was 730 mg/kg.

Overdose information

Signs of a β-blocker overdose include cardiovascular symptoms such as hypotension, congestive heart failure, and bradycardia. Other symptoms such as bronchospasm, and hypoglycemia may occur. If an overdose occurs with bisoprolol, supportive treatment should be initiated. Glucagon has been shown to be beneficial in bradycardia and hypotension associated with beta-blocker overdosage. Hypoglycemia may be managed by administering IV glucose. Monitor the patient and administer atropine in cases of bradycardia, pressors and fluids in the case of hypotension, and conventional heart failure therapy if heart failure occurs. If heart block occurs, the patient must be closely monitored and isoproterenol infusion or transvenous cardiac pacemaker insertion should take place. For the management of overdose-related bronchospasm, administer bronchodilators with or without IV aminophylline. Limited research suggests that bisoprolol fumarate is not removed adequately by hemodialysis sessions.

The most likely symptom of overdose is severe hypotension. The most common adverse effects observed in controlled clinical trials include cough, digestive symptoms, fatigue, headache, and dizziness.

Precaution

Bisoprolol Fumarate must be used with caution in:

• Bronchospasm (bronchial asthma, obstructive airways diseases)
• Diabetes Mellitus with large fluctuations in blood glucose values; symptoms of hypoglycemia can be masked
• Strict fasting
• Ongoing desensitization therapy
• First degree AV block
• Prinzmetal's angina
• Peripheral arterial occlusive disease (intensification of complaints might happen especially during the start of therapy)
• General anesthesia

In the following cases, Perindopril should be used with caution:

• Renovascular hypertension
• Surgery/Anesthesia
• Renal failure: The dose should be cautiously adjusted in accordance with the creatinine clearance
• Symptomatic hypotension is rarely seen, but is more likely in volume-depleted patients, those receiving diuretics, or with the first two doses
• In diuretic-treated patients: stop the diuretic 3 days before starting Perindopril. A diuretic may later be given in combination if necessary; potassium-sparing diuretics are not recommended
• Combination with neuroleptics or imipramine-type drugs may increase the hypotensive effect. Serum lithium concentrations may rise during lithium therapy

Interaction

Bisoprolol should not be combined with other beta-blocking agents. Patients receiving catecholamine-depleting drugs, should be closely monitored, because the added beta-adrenergic blocking action of Bisoprolol may produce excessive reduction of sympathetic activity.In patients receiving concurrent therapy with clonidine, if therapy is to be discontinued, it is suggested that Bisoprolol be discontinued for several days before the withdrawal of clonidine. Bisoprolol should be used with care when myocardial depressants or inhibitors of AV conduction, such as certain calcium antagonists or antiarrhythmic agents are used concurrently.Other Alfred Angelo wedding dress collection comes in mermaid dress cut. There are two samples of beach wedding dresses shown in the pictures. Both dresses are different indeed with stylish and creative details on certain areas such as skirt, waist and chest. To match the latest dress model, these mermaid cut wedding dresses a la princess of fairytale apply sweetheart strapless neckline cut. Thick ruffle details are applied on the first mermaid dress. The ruffle application is combined with pleated details on the dress. Thus, in conclusion, the dress is extremely very marvelous for your modern fairytale bridal.Concomitant use with digitalis glycosides can increase the risk of bradycardia.Concurrent use of rifampin increases the metabolic clearance of Bisoprolol, resulting in a shortened elimination half-life of Bisoprolol. However, initial dose modification is generally not necessary.

May enhance hypotensive effect with diuretics. Additive hyperkalaemic effect with K supplements, K-sparing diuretics, and other drugs (e.g. ciclosporin, heparin, indometacin). May increase serum levels and toxicity of lithium. Antihypertensive effect may be reduced by aspirin or other NSAIDs. Coadministration with NSAIDs may also increase the risk of renal impairment. Increased risk of hypoglycaemia with antidiabetic agents. Rarely, nitritoid reactions occur with concomitant use of gold (Na aurothiomalate).

Volume of Distribution

The volume of distribution of bisoprolol is 3.5 L/kg. The mean volume of distribution was found to be 230 L/kg in heart failure patients, which was similar to the volume of distribution in healthy patients. Bisoprolol is known to cross the placenta.

Elimination Route

Bisoprolol is well absorbed in the gastrointestinal tract. The AUC is 642.87 g.hr/mL and bioavailability of bisoprolol is about 90% due to the minimal first pass effects. Absorption is unaffected by food intake. Peak plasma concentrations of bisoprolol are attained within 2-4 hours and steady-state concentrations are achieved within 5 days of administration. In a pharmacokinetic study, the mean peak concentration of bisoprolol was 52 micrograms/L. Cmax at steady state concentrations of bisoprolol is 64±21 ng/ml administered at 10 mg daily.

Rapidly absorbed with peak plasma concentrations occurring approximately 1 hour after oral administration. Bioavailability is 65-75%. Following absorption, perindopril is hydrolyzed to perindoprilat, which has an average bioavailability of 20%. The rate and extent of absorption is unaffected by food. However, food decreases the extent of biotransformation to peridoprilat and reduces its bioavailability by 35%.

Half Life

A pharmacokinetic study in 12 healthy individuals determined the mean plasma half-life of bisoprolol to be 10-12 hours. Another study comprised of healthy patients determined the elimination half-life to be approximately 10 hours. Renal impairment increased the half-life to 18.5 hours.

Perindopril, 1.2 hours; Peridoprilat, 30-120 hours. The long half life of peridoprilat is due to its slow dissociation from ACE binding sites.

Clearance

Total body clearance in healthy patients was determined to be 14.2 L/h. In patients with renal impairment, clearance was reduced to 7.8 L/h. Hepatic dysfunction also reduced the clearance of bisoprolol.

• 219 - 362 mL/min [oral administration]

Elimination Route

Bisoprolol is eliminated equally by both renal and hepatic pathways. About 50% of an oral dose is excreted unchanged in the urine with the remainder of the dose excreted as inactive bisoprolol metabolites. Under 2% of the ingested dose is found to be excreted in the feces.

Perindopril is extensively metabolized following oral administration, with only 4 to 12% of the dose recovered unchanged in the urine.

Pregnancy & Breastfeeding use

Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women. Bisoprolol should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.Nursing Mothers:Small amounts of bisoprolol fumarate (< 2% of the dose) have been detected in the milk of lactating rats. It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk caution should be exercised when bisoprolol fumarate is administered to nursing women.

Perindopril should not be used during pregnancy & lactation.

Contraindication

Bisoprolol is contraindicated in patients with cardiogenic shock, overt cardiac failure, second or third degree AV block, and marked sinus bradycardia.

Perindopril is contraindicated in patients with a history of hypersensitivity to Perindopril. This drug is contraindicated in case of management of hypertension of Children, during Pregnancy & Lactation.

Special Warning

Pediatric Patients: There is no pediatric experience with Bisoprolol.

Geriatric Patients: It is not necessary to adjust the dose in the elderly, unless there is also significant renal or hepatic dysfunction.

Renal impairment: Reduce dose if eGFR less than 20 ml/ minute/ 1.73 m2 (max. 10 mg daily).

Hepatic impairment: Maximum 10 mg daily in severe impairment (hepatitis or cirrhosis).

Acute Overdose

The most common signs expected with overdosage of a beta-blocker are bradycardia, hypotension, congestive heart failure, bronchospasm, and hypoglycemia. To date, a few cases of overdose (maximum: 2000 mg) with bisoprolol have been reported. Bradycardia and/or hypotension were noted. Sympathomimetic agents were given in some cases, and all patients recovered. In general, if overdose occurs, bisoprolol therapy should be stopped and supportive and symptomatic treatment should be provided. Limited data suggest that bisoprolol fumarate is not dialyzable. Based on the expected pharmacologic actions and recommendations for other beta-blockers, the following general measures should be considered when clinically warranted.

Symptoms: Hypotension, bradycardia, circulatory shock, renal failure, hyperventilation, electrolyte disturbances, tachycardia, palpitations, dizziness, anxiety, and cough.

Management: Symptomatic and supportive. IV infusion of NaCl 0.9%. Treatment with angiotensin II infusion and/or IV catecholamines may also be considered. Haemodialysis may be beneficial.

Storage Condition

Keep out of the reach of children. Protect from light and moisture, keep in a cool and dry place.

Keep away from the reach of children. Store in a cool & dry place, protect from light and moisture.

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