Algorithm 2 Algorithm for PAC/PVC Detection on Non-AF Windows

Input: ${\theta }_{123},{\theta }_{645}:=$ degrees of included angle for ‘1-2-3’ and ‘6-4-5’ pattern, respectively.

${\theta }_{24},{\theta }_{42},{\theta }_{12},{\theta }_{23},{\theta }_{64},{\theta }_{45}:=$ degrees of slope angle for ‘2-4’,‘4-2’,‘1-2’,‘2-3’,‘6-4’,‘4-5’ pattern,

respectively

$n_{123},n_{645},n_{24},n_{42},n_{12},n_{23},n_{64},n_{45}:=$ number of ‘1-2-3’,‘6-4-5’,‘2-4’,‘4-2’,‘1-2’,‘2-3’,‘6-4’‘4-5’ pattern,

respectively.

$r_{zero}:=$ ratio of zero quadrants

$n_{outside}:=$ number of points outside cross demarcation

Output: $Arrhythmia$ type as NSR, AF, or PAC/PVC.

1: if $(n_{123}+n_{645})\ge 3$ then

2: Calculate $st{d}_{123}$ and $st{d}_{645}$, the standard deviation of ${\theta }_{123}$ and ${\theta }_{645}$, respectively.

3: if $n_{645}\le 1$ then

4:  Set $st{d}_{645}=0$.

5: end if

6: if $n_{123}\le 1$ then

7:  Set $st{d}_{123}=0$.

8: end if

9: if $st{d}_{123}\le 10$ && $st{d}_{645}\le 10$ then

10:  $Arrhythmia=$PAC/PVC.

11: else

12:  $Arrhythmia=$AF.

13: end if

14: else

15: Calculate $st{d}_{24}$ and $st{d}_{42}$, the standard deviation of ${\theta }_{24}$ and ${\theta }_{42}$, respectively.

16: if $min(n_{24},n_{42})\ge 5$ && $st{d}_{24}\le 10$ && $st{d}_{42}\le 10$ then

17:  $Arrhythmia=$PAC/PVC.

18: else

19;  Calculate $st{d}_{12},st{d}_{23},st{d}_{64},st{d}_{45}$, the standard deviation of ${\theta }_{12}$, ${\theta }_{23}$, ${\theta }_{64}$, and ${\theta }_{45}$, respectively.

20:  if $min(n_{64},n_{45})\le 3$ then

21:   Set $st{d}_{64}=0$ and $st{d}_{45}=0$.

22:  end if

23:  if $min(n_{12},n_{23})\le 3$ then

24:   Set $st{d}_{12}=0$ and $st{d}_{23}=0$.

25:  end if

26:  if $max(st{d}_{12},st{d}_{23},st{d}_{64},st{d}_{45})\le 10$ then

27:   $Arrhythmia=$PAC/PVC.

28:  else

29:   if $r_{zero}<0.5\left|\right|n_{outside}\ge 5$ then

30:    $Arrhythmia=$AF.

31:   else

32:    $Arrhythmia=$NSR.

33:   end if

34:  end if

35: end if

36: end if

37: return $Arrhythmia$