calcAvHRT: Calculate an avHRT object

In RHRT: Heart Rate Turbulence Analysis

Description

For each index the average of the intervals across all HRTs in the HRTList is calculated and the averaged HRT returned. The type of averaging, the order of HRT parameter assessment and interval lengths for normalising TS can be passed.

Usage

calcAvHRT(
  HRTListObj,
  av = mean,
  orTO = "avAfter",
  orTS = "avBefore",
  IL = HRTListObj@IL,
  normIL = c_normIL,
  normHallstrom = TRUE,
  coTO = COTO,
  coTS = COTS,
  coTT = COTT
)

## S4 method for signature 'HRTList'
calcAvHRT(
  HRTListObj,
  av = mean,
  orTO = "avAfter",
  orTS = "avBefore",
  IL = HRTListObj@IL,
  normIL = c_normIL,
  normHallstrom = TRUE,
  coTO = COTO,
  coTS = COTS,
  coTT = COTT
)

Arguments

HRTListObj	HRTList object
av	(Function) Type of averaging the VPCSs, either mean or median
orTO	(Character) Order in which TO was calculated, either "avAfter" (assessment of parameter and averaging) or "avBefore" (averaging of the VPCSs and assessment of parameter)
orTS	(Character) Order in which TS was calculated, either "avAfter" (assessment of parameter and averaging) or "avBefore" (averaging of the VPCSs and assessment of parameter)
IL	(Numeric) The overall arithmetic mean of the interval length of the measurement to normalise TS
normIL	(Numeric) The interval length to which TS should be normalised
normHallstrom	(Boolean) Should the normalisation of Hallstrom be used?
coTO	(Numeric) Cut-off value for TO
coTS	(Numeric) Cut-off value for TS and nTS
coTT	(Numeric) Cut-off value for TT

Details

To eliminate other RR variability TS is commonly assessed after averaging the VPCSs. TO is commonly first calculated from the single VPCS and then averaged. (See 'Heart Rate Turbulence: Standards of Measurement, Physiological Interpretation, and Clinical Use, Axel Bauer et al., Journal of the American College of Cardiology, Volume 52, Issue 17, Pages 1353-1365')

Value

(avHRT) The avHRT object of the given HRTList

Examples

# You need an HRTList
hrtl <- vectorToHRT(testdataLong, testdataLong_Ann)

# Recalculate the avHRT with different normalisation
calcAvHRT(hrtl, normIL = 1000, normHallstrom = FALSE)

# Recalculate the avHRT based on a different calculation order
calcAvHRT(hrtl, orTO = "avBefore", orTS = "avAfter")

# Set custom parameter cut-offs for the reliability check
## You should keep in mind to give the same cut-offs when calling getResults()
calcAvHRT(hrtl, coTO = 0.022, coTS = 1.42, coTT = 12)

RHRT documentation built on June 29, 2021, 9:06 a.m.