كيسات باطنية 🩺 / اكاديمية البيت الطبي 🩺💊

A 48-year-old woman develops constipation postoperatively and selfmedicates with milk of magnesia. She is noted to have an elevated serum magnesium level. Which of the following represents the earliest clinical indication of hypermagnesemia? a. Loss of deep tendon reflexes b. Flaccid paralysis c. Respiratory arrest d. Hypotension e. Stupor

Multiple ulcers with slough around ileostomy in IBD suggest: A. Erythema nodosum B. Pyoderma gangrenosum C. Cellulitis D. Behçet disease

An elderly patient on warfarin after minor trauma most likely develops: A. Epidural hematoma B. Subdural hematoma C. SAH D. Brain abscess

A. Epidural hematoma B. Subdural hematoma C. SAH D. Brain abscess

C

60-year-old woman in ICU with septic shock remains hypotensive despite fluids. Which drug is the first-line vasopressor? A. Dopamine B. Adrenaline C. Noradrenaline D. Vasopressin E. Dobutamine

🚨 Exam Rule Acute dyspnoea + crackles + suspected heart failure ➡ First investigation = Chest X-ray

The best immediate investigation is: ⭐ Chest X-ray It helps identify: • Pulmonary edema • Cardiomegaly • Kerley B lines • Alveolar shadowing • Pleural effusion Typical findings in pulmonary edema: • Bat-wing perihilar shadowing • Cardiac enlargement

Key findings: • Previous myocardial infarction • History of recurrent heart failure • Progressive dyspnoea • Orthopnoea (cannot lie flat) • RR = 31/min • BP = 90 mmHg • O₂ saturation = 90% • Widespread lung crepitations This picture is classic for: 👉 Acute decompensated heart failure with pulmonary edema

Q-63 A 55 year old man with a history of a myocardial infarction three years ago presents with progressive dyspnoea. He has had two previous admissions with heart failure in the past year and complains of the inability to lie down flat on his bed. He has a respiratory rate of 31 breaths/minute and a systolic blood pressure of 90 mmHg. His oxygen saturation is 90% on room air. On examination, he looks pale and sweaty, and has widespread crepitations over both lung fields. Oxygen by face mask was commenced. What is the SINGLE most appropriate investigation? A. Chest X-ray B. Computed tomography scan of the chest C. Electrocardiogram D. Full blood count E. D-dimer test

Identify the key clues • MI 4 weeks ago • Pleuritic chest pain (worse on inspiration) • Mild fever (37.5°C) • High ESR (82 mm/h) This combination strongly suggests: 👉 Dressler syndrome

A 48 year old man has continuous anterior chest pain which is worse on inspiration. 4 weeks ago, he had a myocardial infarction. He has a temperature of 37.5 C. His blood results show an ESR of 82 mm/h. What is the SINGLE most likely explanation for the abnormal investigation? A. Pulmonary embolism B. Cardiac tamponade C. Atrial thrombus D. Left ventricular aneurysm E. Dressler syndrome

🚨 "مضاد فطريات + مهدئ = نوم للأبد!" ❓ ليش ممكن يكون الخلط خطير جدًا؟ 🔬 أغلب مضادات الفطريات الفموية من مجموعة الـ Azoles مثل: Fluconazole Itraconazole Ketoconazole هاي الأدوية بتثبط إنزيمات الكبد CYP450 (خصوصًا CYP3A4). 💊 لو المريض كان ياخد مهدئات مثل: Midazolam Diazepam Alprazolam ⬅️ بصير استقلاب المهدئ أبطأ ⬅️ يرتفع تركيزه بالدم ⬅️ يزداد التثبيط العصبي ⬅️ احتمال كبت تنفس / غيبوبة ⚠️ أخطر مثال: Midazolam الفموي مع azoles (تداخل شديد وممكن يكون مميت). 🧠 الرسالة الأهم: المشكلة مش إنهم الاثنين بنوّموا… المشكلة إن مضاد الفطريات برفع مستوى المهدئ بشكل خطير داخل الجسم.

Normal ECG + recurrent episodes → Holter monitor • Abnormal ECG → Echo first حفظ ✅

🧠 Exam Golden Rule Post-MI + sudden dyspnoea + pansystolic murmur at apex = Papillary muscle rupture

Heart failure + sudden worsening + cardiomegaly → Think Atrial fibrillation ⸻ 🧠 Exam Memory Tip Dilated cardiomyopathy complications: • Heart failure • Atrial fibrillation ✅ • Thromboembolism • Ventricular arrhythmias حفظ