The risk of developing arterial hypotension and / or renal failure against the background of taking the drug is increased with a significant loss of sodium and water ions (strict salt-free diet, diuretics, severe diarrhea or Q vomiting) or stenosis of the renal arteries (blockade in these situations of renin-angiotensin-aldosterone system can lead, especially with the first intake of the drug and during the first 2 weeks of treatment, to a sudden decrease in blood pressure and the development of CRF).
Before and during the therapy it is recommended to determine the concentration of creatinine, electrolytes and urea (within 1 month).
In patients with hypertension who are already receiving diuretic therapy, it is necessary to stop taking them (3 days before the appointment of perindopril) and, if necessary, add to the treatment in the future again. In patients with CHF who receive diuretic therapy, if possible, their dose should also be reduced a few days before the start of admission.
In patients at risk, especially with decompensated CHF, elderly patients, as well as patients with baseline low blood pressure, impaired renal function or receiving large doses of diuretics, the beginning of the drug should be administered under the supervision of a doctor.
Patients on hemodialysis should avoid the use of polyacrylonitrile membranes (possibly the development of anaphylactoid reactions).
It is necessary to stop taking before the forthcoming surgery under general anesthesia for 12 hours and to warn the doctor / anesthesiologist about taking the drug.
It should be borne in mind that in patients of the Negroid race the risk of angioedema development is higher.Like other ACE inhibitors, perindopril is less effective as an antihypertensive agent in patients of the Negroid race. This effect is probably associated with a marked predominance of low-grade status in patients of the Negroid race with arterial hypertension.
During therapy with ACE inhibitors, it is sometimes possible to develop a syndrome that starts with cholestatic jaundice and then progresses to fulminant liver necrosis, sometimes with a fatal outcome. The mechanism of development of this syndrome is unclear. If jaundice appears during the administration of an ACE inhibitor or an increase in the activity of "liver" enzymes occurs, the ACE inhibitor should be immediately discontinued and the patient should be closely monitored. It is also necessary to conduct an appropriate examination.