جــرعــة طــب

#_renal_physiology 👇👇

كصورةٍ على جدارٍ قديم يكسوها الغبار .. لستُ وحيدًا!

23-year-old woman with a history of type 1 diabetes mellitus is brought to the Emergency Department because of nausea, vomiting, abdominal pain, and rapid deep breathing for one day. She missed several doses of insulin over the past 2 days.

On examination:

Dry mucous membranes Respiratory rate: 32/min (deep, rapid breathing) Blood pressure: 95/60 mmHg A fruity odor is noted on her breath.

Laboratory Results:

Glucose: 420 mg/dL Serum ketones: Positive Arterial Blood Gas (ABG): pH: 7.18 PaCO₂: 25 mmHg HCO₃⁻: 10 mEq/L

Questions:

What is the primary acid-base disorder? Is respiratory compensation present? What is the most likely diagnosis? Why is the patient breathing rapidly? What is the initial management?

68-year-old man with a 40-pack-year smoking history is brought to the Emergency Department because of progressive shortness of breath, drowsiness, and confusion over the past 2 days. He has a history of COPD and uses home oxygen intermittently. On examination: Respiratory rate: 10/min Oxygen saturation: 84% on room air Diffuse wheezing and decreased breath sounds bilaterally Arterial Blood Gas (ABG): pH: 7.30 PaCO₂: 60 mmHg HCO₃⁻: 29 mEq/L Questions: What is the primary acid-base disorder? Is there compensation? Is this acute or chronic respiratory acidosis? What is the most likely underlying cause? What is the initial management?

58-year-old man presents to the Emergency Department with generalized weakness, muscle cramps, and lightheadedness. He reports persistent vomiting for the past 4 days due to gastric outlet obstruction. On examination, he appears dehydrated with dry mucous membranes. Laboratory Results: pH: 7.52 PaCO₂: 48 mmHg HCO₃⁻: 38 mEq/L Questions: What is the primary acid-base disorder? Is respiratory compensation present? What is the most likely cause of this acid-base disturbance? Why does persistent vomiting lead to this condition? What is the appropriate initial management?

A 24-year-old woman presents to the Emergency Department complaining of palpitations, dizziness, and tingling around her lips and fingertips after experiencing a severe panic attack. Arterial Blood Gas (ABG): pH: 7.50 PaCO₂: 28 mmHg HCO₃⁻: 24 mEq/L Questions What is the primary acid-base disorder? Is there compensation? What is the most likely underlying cause? What is the appropriate initial management?

أو قول المتنبي : لِعَينَيكِ ما يَلقى الفُؤادُ وَما لَقي وَلِلحُبِّ مالَم يَبقَ مِنّي وَما بَقي وَما كُنتُ مِمَّن يَدخُلُ العِشقُ قَلبَهُ وَلَكِنَّ مَن يُبصِر جُفونَكِ يَعشَقِ وَبَينَ الرِضا وَالسُخطِ وَالقُربِ وَالنَوى مَجالٌ لِدَمعِ المُقلَةِ المُتَرَقرِقِ

🚨 High-Yield Physiology Acid–Base Disorders 🩸 Normal ABG ✔️ pH: 7.35–7.45 ✔️ PaCO₂: 35–45 mmHg ✔️ HCO₃⁻: 22–26 mEq/L 🔍 Step 1: Check pH ⬇️ pH → Acidosis ⬆️ pH → Alkalosis 🔍 Step 2: Find the Cause 🫁 PaCO₂ → Respiratory 🩺 HCO₃⁻ → Metabolic 🔴 Metabolic Acidosis ⬇️ pH + ⬇️ HCO₃⁻ 📌 Causes: • DKA • Diarrhea • Renal Failure 💡 الجسم يعوض بـ Hyperventilation. 🟢 Metabolic Alkalosis ⬆️ pH + ⬆️ HCO₃⁻ 📌 Causes: • Vomiting • Diuretics 💡 الجسم يعوض بـ Hypoventilation. 🔵 Respiratory Acidosis ⬇️ pH + ⬆️ PaCO₂ 📌 Causes: • COPD • CNS Depression 💡 الكلى ترفع HCO₃⁻ للتعويض. 🟠 Respiratory Alkalosis ⬆️ pH + ⬇️ PaCO₂ 📌 Causes: • Anxiety • Fever • High Altitude 💡 الكلى تقلل HCO₃⁻. 🧠 ROME Rule ✅ Respiratory = Opposite ✅ Metabolic = Equal ⚠️ Remember 1️⃣ Check pH 2️⃣ Identify PaCO₂ or HCO₃⁻ 3️⃣ Look for Compensation 4️⃣ Treat the Cause, Not Just the Numbers. 💙

أرأيت ذاك اليوم الذي كنت تخافه ها قد مر وأنت في ضوء قمر جديد ♥️

A 2-year-old boy is brought to the emergency department with watery diarrhea for 2 days, 3 episodes of vomiting, and fever (38.5°C). His mother reports decreased urine output and poor oral intake. Examination: Dry mucous membranes Sunken eyes HR: 130/min Weight: 12 kg 1- What is the most likely diagnosis? 2- What is the degree of dehydration? 3- What is the most common cause? 4- What is the initial management?

A 21-year-old woman presents with a 3-day history of sore throat and fever. She has difficulty swallowing but is able to tolerate fluids. She denies cough or rhinorrhea. On examination, temperature is 38.3°C, tonsils are erythematous with patchy exudates, and there is tender anterior cervical lymphadenopathy. No splenomegaly is noted. A rapid antigen detection test for Group A Streptococcus is negative. What is the most appropriate next step in management? A. Initiate empiric oral penicillin therapy B. Administer a single dose of intramuscular benzathine penicillin C. Obtain a throat culture before initiating antibiotics D. Begin symptomatic treatment with NSAIDs and reassess in 48–72 hours E. Test for Epstein–Barr virus with heterophile antibody assay

28 years old female presented with history of vague umbilical pain 3 days ago, now the pain is well localized to right iliac fossa. On examination, pulse 90/min, BP 120/80, temp 38°c with a palpable tender mass in right iliac fossa. A. What is your diagnosis? B. What is the DD ? C. What is the Complications ?