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Precordial concordance, also known as QRS concordance is when all precordial leads on an electrocardiogram are either positive (positive concordance) or negative (negative concordance). [1]
Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [ 5 ] using electrodes placed on the skin.
Under these criteria, an ECG is positive for an AMI in the presence of LBBB if any of the following criteria are present: ST deviation ≥1 mm (0.1 mV) concordant with QRS polarity in any ECG lead, thus including either: ST depression ≥1 mm (0.1 mV) concordant with QRS polarity, in any ECG lead.
The typical meaning of an "ECG" is the 12-lead ECG that uses 10 wires or electrodes to record the signal across the chest. Interpretation of an ECG is the basis of a number of cardiac diseases including myocardial infarction (heart attack) and arrhythmias such as atrial fibrillation.
In Judaism, bible hermeneutics notably uses midrash, a Jewish method of interpreting the Hebrew Bible and the rules which structure the Jewish laws. [1] The early allegorizing trait in the interpretation of the Hebrew Bible figures prominently in the massive oeuvre of a prominent Hellenized Jew of Alexandria, Philo Judaeus, whose allegorical reading of the Septuagint synthesized the ...
The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane.. In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between −30° and −90°.
Intraventricular conduction delay seen in precordial/chest leads with QRS duration 100 ms. An EKG of a 25-year-old male. Intraventricular conduction delays (IVCD) are conduction disorders seen in intraventricular propagation of supraventricular impulses resulting in changes in the QRS complex duration or morphology, or both.
Biblical hermeneutics is the study of the principles of interpretation concerning the books of the Bible.It is part of the broader field of hermeneutics, which involves the study of principles of interpretation, both theory and methodology, for all forms of communication, nonverbal and verbal. [1]