رجل عمره ٦٠ سنة على غسيل كلوي، صام في رمضان وأفطر يومياً على تمر كثير وعصير برتقال وموز. جاء قبل جلسته بضعف في الساقين وخفقان. النبض ٥٢ غير منتظم، والبوتاسيوم ٦٫٩. ما السبب الأرجح؟

A 60-year-old man on haemodialysis fasted in Ramadan and broke his fast daily with many dates, orange juice and bananas. Before his session he has leg weakness and palpitations; HR 52 irregular, potassium 6.9. What is the most likely cause?

1. Potassium-rich foods that his kidneys cannot excrete
2. Dehydration from fasting that is unrelated to his food choices
3. Low potassium from long daily fasting
4. A side effect of regular dialysis sessions

Answer: A) Potassium-rich foods that his kidneys cannot excrete. Dates, oranges and bananas are potassium-rich and dialysis patients cannot excrete it, causing dangerous arrhythmias. Urgent treatment and dietary teaching are needed.