Table 1.

Nomenclature employed in the present article.

Abbreviation	Description
App	Application of a software program
CK	Coefficient of kurtosis
COVID-19	Coronavirus disease 2019
CoV-2	Coronavirus 2
CS	Coefficient of skewness
DC	Direct current
E	Energy
ECG	Electrocardiogram
FIR	Finite impulse response
GPS	Global positioning system
GSM	Global system for mobile communication
HM	Harmonic mean
Hz	Hertz
IoT	Internet of things
KF	Kurtosis feature
LCD	Liquid crystal display
MATLAB	Matrix laboratory software
MD	Mean deviation
MIT-BIH	Massachusetts Institute of Technology – Beth Israel Hospital
NET	Type of internet (wired, that is,
	local area networks –LAN–, or wireless fidelity –Wi-Fi–)
NodeMCU	Node microcontroller unit
QRS	Q, R and S (shear) waves
SARS	Severe acute respiratory syndrome
SD	Standard deviation
SF	Skewness feature
WHO	World Health Organization