Can a common blood pressure pill prevent heart attacks after kidney failure in the ICU?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patient between 18 and 75 years old * Met criteria for acute kidney injury during the ICU stay (according to the KDIGO criteria) * After their renal function has stabilized for at least 48 hours (Serum creatinine decreasing or not increasing more than 26 micromol/L or 25%) among patients ready to be discharged from the ICU or acute careTCU. and within 30 days after their ICU discharge. * Signed informed consent * Patients affiliated to a Social Security System * Women of childbearing potential and men must agree, to use adequate and highly effective contraception, until the end of the research. Exclusion Criteria: * Patient treated with ACEi or ARB before ICU admission * Patient for whom treatment with ACEi or ARB is strongly recommended according to the international guidelines at discharge (i.e. patients with congestive heart failure and persistent dyspnea with LVEF\<40%,, patients with diabetes mellitus and either albuminuria \> 300 µg/g creatininuria or hypertension associated with microalbuminuria or hypertension associated with eGFR \< 60 ml/min) known before ICU admission. * Hyperkalemia\>5 mmol/L * Systolic blood pressure \<100 mmHg * Patient with severe renal failure, as defined by estimated glomerular filtration rate creatinine clearance \< 15 ml/min/1.73m2), requiring renal replacement therapy at ICU discharge * Oral route impossible. * Pregnancy * Breast feeding * Patients chronically treated with Aliskiren * Known hypersensitivity to the active substance or to one of its excipients and in particular to lactose * Patients with known primary hyperaldosteronism * Patients with known severe and symptomatic aortic stenosis, mitral stenosis or obstructive hypertrophic cardiomyopathy. * Patients treated with lithium * Patient undergoing psychiatric care * Inability to consent due to psychiatric disorders defined as psychiatric disorders or patient with a mental state requiring immediate care with either by constant medical surveillance justifying hospitalization, or regular medical follow-up justifying specific treatment * Patient deprived of liberty by a judicial or administrative decision * Patient to a legal protection measure (guardianship, curatorship and safeguard of justice)