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

…determine whether the ECG waves and intervals are normal. This chapter will focus on the ECG waves in terms of morphology (appearance), durations and intervals…

🟠 Reference values for adult ECG

…clearly visible: look for retrograde (inverted) P waves, which can be located anywhere between the J point and the terminal part of the T wave…

Acute Pulmonary Embolism: Risk Stratification and Reperfusion

…Patients without haemodynamic instability require more detailed prognostic evaluation using two complementary domains: Indicators of acute PE severity , including clinical findings, RV dysfunction on imaging…

Heart Failure With Mildly Reduced Ejection Fraction

…is not mandatory for HFmrEF when the diagnosis of heart failure is clinically secure and the LVEF measurement is reliable. Nevertheless, these findings increase diagnostic…

Interpretation of myocardial perfusion images (Myocardial SPECT / PET)

…a standardized framework for identifying and localizing areas of ischemia or infarction. This segmentation facilitates precise reporting and ensures consistent communication of findings across clinicians…

ST segment depression in myocardial ischemia and differential diagnoses

…Characteristics of ischemic ST segment depressions on ECG. Current guideline criteria for ischemic ST segment depression: New horizontal or downsloping ST segment depressions ≥0,5…

Pre-excitation, Atrioventricular Reentrant (Reentry) Tachycardia (AVRT), Wolff-Parkinson-White (WPW) syndrome

…presents ECG findings during normal atrioventricular impulse transmission as well as ECG findings during pre excitation. Figure 1. Hallmarks of pre excitation on the ECG…

T-waves in ischemia: hyperacute, inverted (negative), Wellen's sign & de Winter's sign

…wave amplitude is on average 3 mm in V2–V3 in females and it rarely exceeds 8 mm. Note that the amplitude of the T…

Digoxin - ECG changes, arrhythmias, conduction defects & treatment

…effect on impulse conduction because digoxin slows impulse conduction. It is important to note that the association between ECG changes and the risk of arrhythmia…

Mechanisms of cardiac arrhythmias: from automaticity to re-entry (reentry)

…should not be considered abnormal. For example, sinus bradycardia (a slow rhythm directed by the sinoatrial node) is a common finding in athletes and during…

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