Ma te maha o nga wheako i roto i te punaha hihiri ECG pūnaha , taea te whakatutuki i te hihiri . punaha hihiri ECG , me tiki e koe, me tiki i to maatau ratonga ipurangi ka . I tua atu i te raarangi hua i raro nei, ka taea hoki e koe te whakarite i to ake punaha ECG ahurei e rite ana ki o hiahia.