Chinelle Henry, the 24-year-old West Indies women allrounder, is being treated for concussion and will therefore play no further part in the ongoing ODI series with India.
At the height of an incredibly thrilling game on Friday, Henry threw herself after the ball on the edge of the boundary and hit her head on the advertising boards. She was immediately pulled out of the game as the ICC's concussion sub rule took effect for the first time in women's cricket. But her effort saved two runs, in a match that went down to the very last ball, and resulted in a one-run victory for the Caribbean side.
A Cricket West Indies press release on Sunday said Henry would be unavailable for a minimum of seven days. Opening batter Hayley Matthews will take her place from the third ODI of the series, having served out an eight-match suspension for an undisclosed infraction. She hasn't played any international cricket since June after being pulled from West Indies' previous series against Australia.
Isaac has represented Trinidad & Tobago in the CWI's women's championship and T20 Blaze in 2017 and 2019.
"Isaac is a young medium pacer and a livewire on the field who impressed during the recent pre-series camp," Ann Browne-John, CWI's lead selector for women and girls, said. "She will join the group of young medium pacers being groomed in the thrust to continue the development of young players."
The last two ODIs are also scheduled to be played at the Sir Vivian Richards Stadium in North Sound, following which the teams will be playing five T20Is in Gros Islet and Providence.