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PharmaConnect
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PharmaConnect
@Pharma_Connect
The largest network in the Saudi Pharmaceutical industry. أكبر شبكة تواصل للصيادلة بالمملكة العربية السعودية
Kingdom of Saudi Arabia Katılım Temmuz 2017
36 Takip Edilen65.9K Takipçiler

✨Methotrexate:
Methotrexate is widely used in cancer + autoimmune diseases, but misuse can be fatal ⚠️
Let’s break it down 👇
1️⃣ Mechanism ⚙️:
•Inhibits dihydrofolate reductase (DHFR)
•↓ DNA synthesis
➡️ Affects rapidly dividing cells
2️⃣ Clinical Uses 📌
•Rheumatoid arthritis
•Psoriasis
•Cancers (leukemia, lymphoma)
•Ectopic pregnancy
3️⃣ High-Yield Toxicities ⚠️
🧪 Bone marrow suppression
→ pancytopenia
🫁 Pulmonary fibrosis
→ dry cough, dyspnea
🧬 Hepatotoxicity
🤢 Mucositis (oral ulcers)
🚫 Teratogenic
4️⃣ CRITICAL RULE 🚨
👉 Given ONCE WEEKLY (not daily!)
❌ Daily dosing error = severe toxicity / death
5️⃣ Monitoring 🩺
•CBC
•LFTs
•Renal function
6️⃣ Antidote 💊
⭐ Folinic acid (Leucovorin)
→ “rescues” normal cells
7️⃣ Clinical Pearl 🎯
Patient on methotrexate +
➡️ Mouth ulcers + low blood counts
= toxicity until proven otherwise

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Ifosfamide 💊
Alkylating agent → cross-links DNA → inhibits tumor replication
⚠️ Key toxicities:
• Myelosuppression
• Hemorrhagic cystitis (acrolein)
• Encephalopathy (chloroacetaldehyde)
• Nephrotoxicity
🛡️ Management:
• Mesna + hydration (uroprotection)
• Methylene blue (encephalopathy)
• Monitor CBC, renal & CNS
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🎯 Treatment goals:
• Reduce leakage episodes
• Restore bladder control
• Improve quality of life
• Prevent complications (skin damage, infections)
⸻
🥇 First-line treatment (no meds!):
• Weight loss
• Reduce caffeine & alcohol
• Bladder training (scheduled voiding)
• Kegel exercises (especially for stress UI)
• Stop smoking
⸻
💊 If needed, medications include:
1️⃣ Anticholinergics
→ reduce bladder contractions
2️⃣ Beta-3 agonists
→ relax bladder & increase capacity
3️⃣ Botox (last option)
⸻
⚠️ Common side effects (especially anticholinergics):
• Dry mouth
• Constipation
• Dizziness
• Blurred vision
⸻
Important reminder:
UI is treatable.
Don’t ignore it or feel embarrassed—seeking help can dramatically improve quality of life
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Ever felt a sudden urge to urinate and couldn’t hold it?
You’re not alone.
Urinary Incontinence (UI) = involuntary leakage of urine.
It’s common… but NOT a normal part of aging.
⸻
🚨 Key symptoms of UI:
• Urgency (sudden strong need to urinate)
• Frequency (>8 times/day)
• Nocturia (>2 times/night)
• Leakage
These are often linked to overactive bladder (OAB).
⸻
There are 5 main types of UI:
🔹 Urge: sudden uncontrollable urge
🔹 Stress: leakage with coughing/laughing
🔹 Overflow: bladder too full
🔹 Functional: can’t reach toilet in time
🔹 Mixed: combination of types
⸻
⚠️ Risk factors:
• Age > 40
• Diabetes
• Obesity
• Neurological diseases (stroke, Parkinson’s)
• Certain medications
• Limited mobility
⸻
💡 What’s happening inside the body?
The bladder muscle (detrusor) contracts when it shouldn’t →
➡️ Urgency + leakage
This is due to overactive muscarinic receptors.
⸻
Continued…
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🔹 NSAIDs (Ibuprofen, Diclofenac)
→ Anti-inflammatory + analgesic + antipyretic
→ Work by inhibiting COX → ↓ prostaglandins
🔹 Paracetamol (Acetaminophen)
→ Analgesic + antipyretic only
→ Minimal anti-inflammatory effect
⚠️ Key differences:
🔻NSAIDs → GI bleeding, renal risk
🔻Paracetamol → hepatotoxicity in overdose
English

💊 Clozapine:
Clozapine is the gold standard for treatment of resistant schizophrenia, but it comes with serious risks ⚠️
1️⃣ Why is Clozapine special? 🧠
•Works when other antipsychotics fail.
•↓ suicide risk in schizophrenia.
•Weak D2 blockade + strong 5-HT2A effect.
➡️ Best efficacy, but highest monitoring.
2️⃣ Major Side Effects:⚠️
-Agranulocytosis (most important)
•↓ neutrophils → life-threatening infections.
-Myocarditis.
-Seizures.
-Sialorrhea (excess salivation).
-Weight gain, metabolic syndrome.
3️⃣ The BIG rule 🚨
👉 You MUST monitor ANC (Absolute Neutrophil Count)
•Before starting
•Weekly (initially)
•Then spaced monitoring
📌 If ANC drops → STOP immediately
4️⃣ When to use Clozapine? 📌
•Treatment of resistant schizophrenia
•High suicide risk
5️⃣ Clinical Pearl 🎯
If a patient is on antipsychotics and has:
➡️ Fever + sore throat
Think: agranulocytosis until proven otherwise.

English

🩸 Heparin vs LMWH know the difference:
Both are anticoagulants, but differ in monitoring and predictability.
💊 Heparin (UFH)
-IV or SC
-Requires aPTT monitoring
-Short half-life
-Antidote: Protamine
💊 LMWH (Enoxaparin)
-More predictable effect
-No routine monitoring
-Longer half-life
-Lower risk of HIT
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🔻ECMO (Extracorporeal Membrane Oxygenation)
•ECMO circulates blood outside the body through a machine that:
•Adds oxygen
•Removes carbon dioxide.
•It is complex, high-risk, and not appropriate for all patients.
✅✔️Recovery from ARDS
•Mechanical ventilation is typically required for 7–14 days on average.
•If longer support is needed, tracheostomy may be performed.
Most survivors:
•Do not require long-term oxygen
•Recover most lung function.
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🔻Ventilator Support
•Most ARDS patients require mechanical ventilation.
•Oxygen alone is often insufficient and high levels may damage lungs.
•The ventilator:
•Helps open collapsed air spaces
•Assists breathing.
•It connects through:
•Face mask, or
•Endotracheal tube in the windpipe.
🔻Prone Positioning
•If oxygen remains low despite ventilation, patients may be turned onto their stomach (proning).
•Proning can temporarily improve oxygen levels.
•This procedure is complex and not suitable for all patients.
English

🔻🫁 ARDS Overview
•ARDS is a serious and frightening condition for patients and families.
Warning signs of severe disease include:
•Liver failure
•Kidney failure
•Severely low blood pressure.
•Survivors may recover full or partial lung function, although lung scarring can occur.
•Some non-lung complications may persist up to one year, such as muscle weakness and fatigue.
ARDS Treatment
•No definitive cure exists for ARDS.
•Treatment focuses on supportive care while the lungs heal.
•Main goal:
•Maintain adequate oxygen delivery to tissues
•Remove the underlying cause of ARDS.
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