120-160: At 6 weeks, the heart rate can only be seen or heard with ultrasound. The rate should be between 120-160.
Answered 9/11/2012
5.8k views
>100 beats/minute.: Lower than 100 BPM rates are suspicious for impending miscarriage. Normal rate can be as high as 180 BPM initially.
Answered 6/21/2016
5.7k views
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