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Pulmonary Embolism (PE)

…Pathophysiology of pulmonary embolism (PE). Hemodynamic effects Pulmonary embolism leads to increased resistance in the main pulmonary artery, and thereby increased afterload on the right…

Coronary Anatomy and Segmental Classification for the Clinician

…visual diameter reduction. Relevant determinants include: Lesion eccentricity Vessel tortuosity Calcification Plaque rupture or asymmetric filling defects Serial lesions Vessel size The relationship of the…

Aortic stenosis

…overcoming the resistance in the stenosis and maintaining adequate stroke volumes. Thus, ventricular hypertrophy is a compensatory mechanism, the purpose of which is to maint

Sinus bradycardia: definitions, ECG, causes and management

…300/6.5 equals 46 beats/min. Click to zoom. Figure 2. Sinus bradycardia, two premature ventricular contractions, incomplete right bundle branch block and ST…

Injection technique — intramuscular, subcutaneous and intradermal

…the right needle length. Indications Route Typical drugs Absorption : : : Intramuscular (IM) Vaccines, depot antipsychotics, hydroxocobalamin, adrenaline in anaphylaxis, ceftriaxone, ferric carboxymaltose Rapid, 10–20 min…

Left atrial enlargement (P mitrale) & right atrial enlargement (P pulmonale) on ECG

…with the right atrium being depolarized before the left atrium. The first half of the P wave is therefore a reflection of right atrial activation…

Overview of the ECG Waves, Deflections, Intervals, Durations

…left ventricle is usually considerably larger than the right ventricle, the QRS complex is actually a reflection of the electrical potentials generated by the left…

Technical aspects of the ultrasound image

Echocardiography Generating the ultrasound image The ultrasound transducer generates short bursts (pulses) of ultrasound waves. Reflected ultrasound waves are analyzed by the machine during the…

ECG interpretation: Characteristics of the normal ECG (P-wave, QRS complex, ST segment, T-wave)

…left ventricle is many times larger than the vector generated by the right ventricle, the QRS complex is actually a reflection of left ventricular depolarization…

Brugada Syndrome: Diagnosis & SCD Prevention

Cardiology Introduction Since its initial description in 1992 as a syndrome of right bundle branch block, ST segment elevation, and sudden cardiac death (SCD), Brugada…

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