Compensatory (PVC) vs Non-Compensatory (PAC) pause
🔹 Compensatory Pause
▪︎Seen after: PVCs
▪︎Mechanism: The SA node is NOT RESET by the PVC, so it continues to fire on its normal schedule.
▪︎ECG finding: The interval between the two sinus beats surrounding the PVC equals 2× the normal R–R interval.
Example:
Normal R–R = 800 ms
R–PVC–R interval = ~1600 ms
🔹 Non-Compensatory Pause
▪︎Seen after: PACs
▪︎Mechanism: The SA node is RESET (or discharged early) by the PAC, which alters its timing.
▪︎ECG finding: The interval between the two sinus beats surrounding the PAC is less than 2× the normal R–R interval.
Example
Normal R–R = 800 ms
R–PAC–R interval < 1600 ms
Wilkins score (Option C) is the most important scoring system used to predict the success of Percutaneous Balloon Mitral Valvotomy (PBMV). This echocardiographic score evaluates the mitral valve’s mobility, thickness, calcification, and subvalvular involvement, each graded from 1 to 4. A lower total score (≤8) indicates a more pliable valve and predicts a better outcome with PBMV, while a higher score suggests poor valve morphology and a lower chance of successful dilation. Therefore, the Wilkins score is essential in selecting appropriate candidates for PBMV and determining procedural success.
Levothyroxine is the first-line treatment for hypothyroidism.
⭐️ It’s a synthetic form of T4, mimicking the body’s natural hormone.
⭐️ Dose is weight-based: ~1.6 mcg/kg/day.
⭐️ Monitor TSH levels for dose adjustments.
⭐️ Avoid taking it with calcium/iron for better absorption.
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@DrAkhilX The "R on T" phenomenon is an ECG finding where a PVC,represented by its R wave,occurs during the T wave of the preceding beat. It is dangerous because it can fall during the heart's vulnerable repolarization phase,potentially triggering a life-threatening ventricular arrhythmia.
🌊Nitroglycerin
🌀Nitroglycerin is the best drug in acute pulmonary edema with severe hypertension because it reduces both preload and afterload:
🌀Preload ↓ → Venodilation → Less blood returning to the heart → Rapid relief of pulmonary congestion
🌀 Afterload ↓ → Arterial dilation → Reduced cardiac workload → Better LV forward flow
🤹Overall:
Immediate reduction in pulmonary capillary pressures → Less pink frothy sputum
🤹Why others are wrong:
🪬Dopamine – increases BP, may worsen afterload
🪬Atropine – raises HR; no role in pulmonary edema
🪬Digoxin – inotrope; slow onset, no acute preload/afterload benefit
🤹Nitroglycerin =
🌀First-line choice in hypertensive acute pulmonary edema.
#PulmonaryEdema #EmergencyMedicine #Cardiology #CriticalCare #MedicalFacts #KriMeeraPharma
Which sign indicates successful pericardiocentesis in tamponade?
A) Increased JVP
B) Fall in systolic BP
C) Disappearance of pulsus paradoxus
D) Development of pericardial rub
@MoarSahitoPTI The confirmatory test for HIV infection is the Western blot (B). While ELISA is used for initial screening, Western blot provides a more specific confirmation. CD4 count and viral load are used for monitoring the disease progression and treatment effectiveness, not for diagnosis.
@MoarSahitoPTI The drug of choice for syphilis is Penicillin G (Benzathine Penicillin G). It is highly effective against Treponema pallidum in all stages of the disease, with no documented resistance.
Alternatives like doxycycline or ceftriaxone are used only in penicillin-allergic patients.
@Deepika_jA43 Metronidazole is generally considered safe in pregnancy 🤰 (after the 1st trimester) ✅ but it should always be taken only if prescribed by a doctor...
✅ Answer: A) Spironolactone
📍 Explanation:
• Spironolactone is a potassium-sparing diuretic and aldosterone antagonist that also has antiandrogenic effects.
• It blocks androgen receptors and inhibits testosterone synthesis, which can lead to gynecomastia in men and breast tenderness in women.
Other key points:
• Used in: heart failure, resistant hypertension, primary hyperaldosteronism, ascites.
• Side effects: hyperkalemia, gynecomastia, menstrual irregularities, impotence.