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. Author manuscript; available in PMC: 2018 Nov 6.
Published in final edited form as: J Perinatol. 2018 Jun 21;38(9):1242–1245. doi: 10.1038/s41372-018-0156-1

Table 2.

Heart rate percentile reference table is shown

Post-menstrual age
Gestational age HR percentile 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
23 5th 135 139 139 140 140 141 141 139 137 137 139 139 136 133 130 129
95th 177 179 180 180 181 180 181 184 183 182 186 185 187 188 187 189
24 5th 139 140 141 141 141 138 138 138 137 135 135 132 133 131 130
95th 175 181 181 181 183 182 182 184 185 184 184 185 186 184 185
25 5th 137 142 141 141 138 136 137 138 135 137 135 132 132 131
95th 176 180 180 181 181 181 181 182 184 184 184 184 182 182
26 5th 134 143 143 137 140 137 137 139 139 135 135 134 127
95th 176 182 183 181 181 183 184 184 183 182 182 184 182
27 5th 134 143 144 141 139 140 138 135 134 131 131 124
95th 178 182 184 182 183 184 183 184 185 183 184 184
28 5th 131 140 141 142 140 140 138 136 133 128 125
95th 176 184 184 184 185 185 185 186 185 184 183
29 5th 130 141 142 141 143 142 139 137 136 134
95th 177 182 182 183 185 185 186 186 185 185
30 5th 126 135 137 139 140 135 134 132 128
95th 176 179 180 182 184 184 183 176 172
31 5th 123 134 137 139 135 130 126 113
95th 176 180 182 185 186 185 188 185
32 5th 123 133 136 135 133 130 127
95th 175 178 182 183 185 184 178
33 5th 119 130 133 133 132 131
95th 172 179 184 186 185 182
34 5th 117 127 128 128 129
95th 172 179 183 184 185

Gestational age and post-menstrual age are shown in weeks.