Equation of Karjalainen et al for Calculating QTc

Description

Karjalainen et al reported an equation for adjusting the QT interval based on heart rate. The authors are from the Central Military Hospital of Helsinki University Hospital.

Selection: heart rate from 40 to 120 beats per minute

corrected QT interval in ms =

= (measured QT) + (correction factor)

Heart Rate	Correction in ms
40	-59
41	-55
42	-50
43	-47
44	-44
45	-40
46	-36
47	-32
48	-29
49	-26
50	-23
51	-21
52	-18
53	-16
54	-13
55	-11
56	-9
57	-6
58	-4
59	-2
60	0
61	2
62	5
63	7
64	9
65	11
66	14
67	16
68	18
69	20
70	23
71	25
72	27
73	29
74	31
75	32
76	34
77	35
78	37
79	38
80	40
81	41
82	42
83	43
84	44
85	45
86	46
87	47
88	48
89	50
90	51
91	52
92	53
93	55
94	56
95	57
96	59
97	60
98	61
99	63
100	65
101	67
102	69
103	71
104	73
105	75
106	77
107	79
108	81
109	83
110	85
111	87
112	89
113	91
114	93
115	95
116	97
117	99
118	101
119	103
120	105

To read more or access our algorithms and calculators, please log in or register.

Equation of Karjalainen et al for Calculating QTc

Description

Specialty