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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°.
Transcriptions of Sanskrit typically use a macron over ā, ī, ū, ṝ, and ḹ in order to mark a long vowel (e and o are always long and consequently do not need any macron). [citation needed] In Latin, many of the more recent dictionaries and learning materials use the macron as the modern equivalent of the ancient Roman apex to mark long ...
A macron is a diacritic ¯ placed over a vowel originally to indicate that the vowel is long. When editing a Wikipedia page, macron characters appear below the edit box, and can be inserted into the edit box by clicking the appropriate character (in JavaScript-enabled browsers). A macron can also be input directly from the keyboard.
A with macron and macron: Kienning Colloquial Romanized transliteration Ā̆ ā̆: A with macron and breve: Latin, Middle High German, Proto-Indo-European Ā̆́ ā̆́: A with macron, breve and acute: Latin Ā̈ ā̈: A with macron and diaeresis: Svan transliteration Ā̊ ā̊: A with macron and ring above: Avestan transliteration Ā̌ ā̌: A ...
It may be specified as left or right depending on which direction it turns, as in ɳ right-tail n, ɻ right-tail turned r, ɲ left-tail n, ʐ tail z (or just retroflex z), etc. Note that ŋ is called eng or engma, ɱ meng, and ꜧ heng. When the tail loops over itself, it's called curly: ʝ curly-tail j, ɕ curly-tail c.
A blood volume increase would cause a shift along the line to the right, which increases left ventricular end diastolic volume (x axis), and therefore also increases stroke volume (y axis). The Frank–Starling law of the heart (also known as Starling's law and the Frank–Starling mechanism ) represents the relationship between stroke volume ...
The mean, normal SA in healthy young adult females and males is 66° and 80°, respectively, [9] and very similar magnitudes are found in the elderly population (65 years and older). [10] In ECG analysis, the SA is categorized into normal (below 105°), borderline abnormal (105–135°) and abnormal (greater than 135°). [ 11 ]
The pressures where there is a steep relationship lie within the normal range of right atrial pressure (RAP) found in the healthy human during life. This range is about -1 to +2 mmHg . The higher pressures normally occur only in disease , in conditions such as heart failure , where the heart is unable to pump forward all the blood returning to ...