**Cardiac Amyloidosis in HFpEF Tunisian Patients** *Cardiac amyloidosis (CA)* is a condition where abnormal proteins called amyloids build up in the heart, causing heart problems. *HFpEF* stands for *Heart Failure with preserved Ejection Fraction*, which means the heart's pumping is normal but it struggles to fill with blood. This study focuses on older Tunisian patients with HFpEF to find out how common CA is among them. The study involves checking for CA in patients who have had HFpEF in the past year and have a heart wall thickness (*IVS thickness*) of 12mm or more. They will also use clinical tests and ultrasound to look for signs of CA. **Key Points**: - **Participation Requirements**: Must have had HFpEF in the last year and be over 60 years old. - **Exclusions**: Cannot participate if you have congenital heart disease or had a serious heart attack causing HFpEF. - **No Risks or Treatments**: This study primarily involves observation and diagnosis, not treatment. This research could help doctors diagnose CA earlier, improving outcomes for patients.