how to calculate qtc fredericia?
536557
A study on children and adolescents 6–17 years of age found the best heart rate correction QT formula to be QTc = QT/RR0.38, which is close to the Fridericia formula (QTc = QT/RR0.33) (11).
889761
['The QT interval should be measured in either lead II or V5-6.', 'Several successive beats should be measured, with the maximum interval taken.', 'Large U waves (> 1mm) that are fused to the T wave should be included in the measurement.']
720322
['Apparent power (kVA) x power factor (pf) = actual power (kW)', 'e.g. 100 kVA x 0.8 = 80 kW.', 'The formula for converting kW into kVA is:', 'Actual power (kW) / power factor (pf) = apparent power (kVA)', '1 ton = 200 BTU/minute.', '1 ton = 12,000 BTU/hour.', '1 ton = 3.517 kilowatts.']
528085
['First, Work Knowledge and Paragraph Comprehension are combined to create Verbal Expression (VE).', 'Next, a "weighted score" of Arithmetic Reasoning (AR) and Mechanical Comprehension (MC) is calculated. ... ', 'Then, the AFQT score is calculated according to the formula: VE x 2 + AR+ MC.']
931036
The normal QT interval varies depending on age and gender, but it's usually 0.36 to 0.44 second (see QT interval ranges). Anything greater than or equal to 0.50 second is considered dangerous for any age or gender; notify the healthcare provider immediately.
723871
['Male (metric): BMR = (13.75 x WKG ) + (5 x HC ) - (6.76 x age) + 66.', 'Male (imperial): BMR = (6.25 x WP ) + (12.7 x HI ) - (6.76 x age) + 66.', 'Female (metric): BMR = (9.56 x WKG ) + (1.85 x HC ) - 4.68 x age) + 655.']
575547
['Summary. ... ', 'Get future value of principal compound interest.', 'Future value.', '=FVSCHEDULE (principal, schedule)', 'principal - The initial investment sum. ... ', 'The FVSCHEDULE function calculates the future value of a single sum based on a schedule of interest rates.']
449744
['public void CalculateTotal()', '{', 'int th1, th2, practical, oral, termwork, total;', 'double percentage;', 'th1 = Convert.ToInt32(txtTheory1.Text);', 'th2 = Convert.ToInt32(txtTheory2.Text);', 'practical = Convert.ToInt32(txtPractical.Text);', 'oral = Convert.ToInt32(txtOral.Text);']
382990
Steps for Construction of Potier Triangle on ZPFC Take a point b on the ZPFC preferably well upon the knee of the curve. Draw bk equal to b'O. (b' is the point for zero voltage, full load current). Ob' is the short circuit excitation Fsc.
202412
['Right axis deviation of +110° or more.', 'Dominant R wave in V1 (> 7mm tall or R/S ratio > 1).', 'Dominant S wave in V5 or V6 (> 7mm deep or R/S ratio < 1).', 'QRS duration < 120ms (i.e. changes not due to RBBB).']
681865
['RWT = 0.33*(67+5+28)-28 =$5.', 'Accounting entry would be:', 'Credit to SCA $67.', 'Credit to RWT liability $5.', 'Debit Dividend $72.']
1170105
['RT = R1 + R2 + R3.', '2 + 2 + 3 = 7 Ohms.', 'R total is 7 Ohms.']
711014
A capacitor is fully charged to 10 volts. Calculate the RC time constant, τ of the following RC discharging circuit when the switch is first closed. The time constant, τ is found using the formula T = R*C in seconds.
69120
As a formula it is: PV = FV / (1+r)n. PV is Present Value. FV is Future Value. r is the interest rate (as a decimal, so 0.10, not 10%)
646153
['EWMA(t) = moving average at time t.', 'a = degree of mixing parameter value between 0 and 1.', 'x(t) = value of signal x at time t.']
574430
['=EDATE(C6,12*60)', '=EDATE(C6,12*60)', '=YEARFRAC(TODAY(),D6)', '=YEAR(EDATE(A1,12*60))']
233884
['Upper 95% CI = e ^ [ln(OR) + 1.96 sqrt(1/a + 1/b + 1/c + 1/d)]', 'Lower 95% CI = e ^ [ln(OR) - 1.96 sqrt(1/a + 1/b + 1/c + 1/d)]']