Special instructions pertaining to perindopril and amlodipine are also applicable to the preparation of Prestan.
Perindopril
Hypersensitivity / angioedema
When taking ACE inhibitors, including perindopril, in rare cases, development of an angioedema of the face, extremities, lips, mucous membranes, tongue, vocal cords and / or larynx can be observed (see section "Side effect"). When symptoms appear, taking the drug should be stopped immediately, and the patient should be observed until the signs of edema disappear completely. If the swelling affects only the face and lips, then its manifestations usually pass on their own, although antihistamines can be used to treat the symptoms.
Angioedema, accompanied by swelling of the larynx, can lead to death. Swelling of the tongue, vocal cords, or larynx can lead to airway obstruction. When these symptoms occur, you should immediately enter epinephrine (epinephrine) subcutaneously and / or provide airway patency. The patient should be under medical supervision until the symptoms disappear completely and persistently.
Patients with a history of Quinck's edema who are not associated with taking ACE inhibitors may be at increased risk of developing this drug when taking this drug (see "Contraindications").
In rare cases, against the background of therapy with ACE inhibitors, angioedema develops in the intestine. In this case, patients have abdominal pain as an isolated symptom or in combination with nausea and vomiting, in some cases, without a previous angioedema and at a normal level of C1-esterase. The diagnosis is established using computed tomography of the abdominal region, ultrasound or at the time of surgery. Symptoms disappear after stopping the intake of ACE inhibitors.Therefore, patients with abdominal pain receiving ACE inhibitors should take into account the possibility of angioedema edema development during differential diagnosis (see section "Side effect").
Anaphylactoid reactions during apheresis of LDL
In rare cases, patients who receive ACE inhibitors may experience life-threatening anaphylactoid reactions during low-density lipoprotein (APL) apheresis using dextran sulfate. To prevent anaphylactoid reaction, therapy with an ACE inhibitor should be temporarily discontinued before each apheresis procedure.
Anaphylactoid reactions during desensitization
There are some reports of the development of anaphylactoid reactions in patients receiving ACE inhibitors during desensitizing therapy (for example, the poison of Hymenoptera insects). In the same patients, the anaphylactoid reaction could be avoided by the temporary withdrawal of ACE inhibitors, and if the drug was randomly taken, the anaphylactoid reaction occurred again.
Neutropenia / agranulocytosis / thrombocytopenia / anemia
Against the background of the administration of ACE inhibitors, neutropenia / agranulocytosis, thrombocytopenia and anemia can occur. In patients with normal renal function and in the absence of other aggravating factors, neutropenia develops rarely. With extreme caution should be applied perindopril in patients with systemic connective diseases tissue, against the background of the use of immunosuppressants, allopurinol or procainamide, especially in patients with impaired renal function.
Some patients had severe infections, in some cases, resistant to intensive antibiotic therapy. When prescribing perindopril to such patients it is recommended to periodically monitor the white blood cells in the blood. Patients should inform the doctor of any signs of infectious diseases (eg, sore throat, fever).
Arterial hypotension
ACE inhibitors can cause a sharp decrease in blood pressure. Symptomatic arterial hypotension rarely develops in patients without concomitant diseases. The risk of excessive reduction in blood pressure is increased in patients with a reduced volume of circulating blood, which can occur with diuretic therapy, while observing a strict salt-free diet, hemodialysis,diarrhea and vomiting, as well as in patients with severe hypertension with high renin activity (see section "Interaction with Other Drugs"). In patients with an increased risk of developing symptomatic arterial hypotension, it is necessary to carefully monitor blood pressure, kidney function and serum potassium content during drug therapy
Prestans
This approach is also used in patients with angina and cerebrovascular diseases, in which severe arterial hypotension can lead to myocardial infarction or impaired cerebral circulation.
In the case of development of arterial hypotension the patient should be transferred to the "lying" position on the back with raised legs. If necessary, replenish the volume of circulating blood by intravenous administration of 0.9% sodium chloride solution. Transient arterial hypotension is not an obstacle for further administration of the drug. After recovery of the volume of circulating blood and blood pressure, treatment can be continued.
Mitral stenosis / aortic stenosis / hypertrophic obstructive cardiomyopathy
Prestans, like other ACE inhibitors, should be administered with caution to patients with obstruction of the left ventricular outflow tract (aortic stenosis, hypertrophic obstructive cardiomyopathy), as well as to patients with mitral stenosis.
Impaired renal function
Patients with renal insufficiency (CC less than 60 ml / min) are recommended individual selection of doses of perindopril and amlodipine. Such patients need regular monitoring of potassium and creatinine in the blood serum (see section "Side effect").
In patients with bilateral stenosis of the renal artery or stenosis of the artery of a single kidney against the background of therapy with ACE inhibitors, an increase in the concentration of urea and creatinine in the blood serum, usually taking place with the withdrawal of therapy, is possible. More often this effect is observed in patients with renal insufficiency. The additional presence of reninvascular hypertension causes an increased risk of severe arterial hypotension and kidney failure in these patients. In some patients with arterial hypertension without signs of renal vascular disease, an increase in the concentration of urea and creatinine in the serum,especially with the simultaneous administration of perindopril with a diuretic, usually minor and transient. More often this effect is noted in patients with a previous impairment of kidney function.
Liver failure
In rare cases, when taking ACE inhibitors, cholestatic jaundice occurs. With the progression of this syndrome, fulminant liver necrosis develops, sometimes with a fatal outcome. The mechanism of development of this syndrome is unclear. When jaundice or a significant increase in the activity of "liver" enzymes against the background of taking ACE inhibitors should stop taking the drug (see section "Side effect").
Ethnic differences
In patients of the Negroid race, angioneurotic edema develops more often than in representatives of other races against the background of the administration of ACE inhibitors.
Perindopril, like other ACE inhibitors, may have a less pronounced antihypertensive effect in patients of the Negroid race than in other races. Perhaps this difference is due to the fact that patients with arterial hypertension of the Negroid race are more likely to have low renin activity.
Cough
Against the background of therapy with an ACE inhibitor, dry cough may occur. Cough persists for a long time against the background of taking this group's drugs and disappears after their withdrawal. When a patient has a dry cough, remember the possible iatrogenic nature of this symptom.
Surgery / general anesthesia
The use of ACE inhibitors in patients undergoing extensive surgery and / or general anesthesia can lead to a marked decrease in blood pressure if general anesthetics with hypotensive action are used. This is due to blocking the formation of angiotensin II against a background of compensatory enhancement of renin activity. If the development of arterial hypotension is associated with the described mechanism, you should increase the volume of circulating plasma. It is recommended to alert the surgeon / anesthesiologist that the patient is taking ACE inhibitors and stop taking the drug 24 hours before surgery.
Hyperkalemia
Hyperkalemia can develop during treatment with ACE inhibitors, including, and perindopril. Risk factors for hyperkalemia are renal failure, age over 70 years, diabetes,Some concomitant conditions (dehydration, acute decompensation of chronic heart failure, metabolic acidosis), simultaneous reception of potassium-sparing diuretics (such as spironolactone and its derivative eplerenone, triamterene, amiloride), as well as preparations of potassium or potassium-containing substitutes cookery salts, as well as the use of other drugs that increase the potassium content in the blood plasma (for example, heparin). The use of potassium, potassium-sparing diuretics, potassium-containing substitutes for edible salt can lead to a significant increase in potassium in the blood, especially in patients with reduced renal function. Hyperkalemia can lead to serious, sometimes fatal heart rhythm disturbances. If simultaneous administration of perindopril and the above drugs is required, treatment should be carried out with caution in the context of regular monitoring of potassium in the blood serum (see section "Interaction with other medicinal products").
Patients with diabetes mellitus
When the drug is prescribed for patients with diabetes mellitus, who receive hypoglycemic agents for ingestion or insulin,During the first month of therapy, the concentration of glucose in the blood should be carefully monitored (see section "Interaction with other medicinal products").
Amlodipine
The efficacy and safety of the use of amlodipine in hypertensive crisis is not established.
Heart failure
Treatment of patients with heart failure should be done with caution. When using amlodipine in patients with chronic heart failure III and IV functional class by classification NYHA possibly the development of pulmonary edema. Blocks of "slow" calcium channels, including amlodipine, should be used with caution in patients with chronic heart failure, due to the possible increase in the risk of development of adverse events from the cardiovascular system and mortality.
Liver failure
In patients with impaired hepatic function T1/2 and AUC Amlodipine increases. Admission of amlodipine should start with the lowest doses and observe precautions, both at the beginning of treatment, and also with increasing doses. Patients with severe hepatic insufficiency should increase the dose gradually,ensuring a thorough monitoring of the clinical condition.
Elderly patients
In elderly patients may increase T1 / 2 and decrease the clearance of amlodipine. Dose changes are not required, but more careful monitoring of patients of this category is necessary.
In patients with impaired renal function, monitoring of the condition is necessary.
Renal insufficiency
Patients with renal insufficiency can take amlodipine in standard doses. Changes in plasma concentrations of amlodipine nc correlate with the degree of renal failure. Amlodipine is not excreted from the body by dialysis.
Prestans
Excipients
Due to the presence of lactose in the formulation, the drug should not be administered to patients with hereditary lactose intolerance, lactase deficiency and glucose galactose malabsorption.