No risks to be taken with in-form Healy

Everything will need to go perfectly to plan for Alyssa Healy if she is to prove her fitness for Thursday's World T20 semi-final in Antigua, after the in-form wicketkeeper suffered a mild concussion in Australia's final group game in Guyana.

Australia will take no chances with Healy, who must pass a stringent set of tests to prove she has recovered from the concussion before she can take the field for the must-win play-off match against either England or West Indies, to be played on Friday morning AEDT.

Healy, who was the tournament's leading run-scorer heading into Saturday's game, collided with teammate Megan Schutt in the field during Australia's 48-run defeat to India and took no further part in the match.

With four full days between that group match and the semi-final, Australian team doctor Pip Inge says Healy has the perfect window to prove she has recovered to take her place in Australia's XI.

"If all the ducks line up in a row, we have the perfect amount of days to graduate her back," Dr Inge told cricket.com.au as Australia prepared to fly from Guyana to Antigua on Sunday. 

"We're lucky we're not playing today (Sunday) because that would have not given us enough time to graduate her back in, (playing yesterday) means we've got just enough days to get it right, if things all line up."

Cricket Australia's concussion policy will see Sixers star Healy undergo a series of tests – after at least 24 hours of rest – over the coming days as part of a staged return to play, Dr Inge explained. 

"We need to graduate people back into play to make sure the symptoms don't get worse and we don't put them at risk," she said. "You need to complete one step before you can move to the next step. 

"Today's about rest...being sensible with things, removing a lot of stimulus.

"The next step is elevating your heart rate a little bit and being able to do a bit of activity like jumping on the (stationary) bike or going for a bit of a run and making sure you don't get a return of any symptoms. 

"Then it's doing some skill work, low-impact, non-contact stuff – for Midge (Healy) she'll do things like throw downs with coaches and some remedial keeping work.

"Then if that's all okay, you go to a full training session, you face bowlers, you put yourself under pressure. And if that's okay you get to play." 

Only one step can be completed per day, and players can only progress to the next stage if they are without symptoms.

"We've got a really good time (frame) with her...but we don't have the ability to speed things up," Dr Inge said. "It's hard to say how long people take to get over concussion, sometimes people get completely knocked out and they're fine five days later, sometimes people get a trivial knock and it can take weeks to settle down." 

Australia coach Matthew Mott said the 28-year-old was feeling "groggy" after Saturday's match, but Dr Inge said Healy was much improved on Sunday morning.

"She's good today, she's got a good black eye going on, but she's feeling a heap better which is good," Dr Inge said.

"We're hopeful things will keep settling and we'll look at her in Antigua tonight and hopefully get her on the treadmill or the bike tomorrow."

After their arrival in Antigua on Sunday, the Australian squad will have a rest day on Monday and two training sessions at Sir Vivian Richards Stadium on Tuesday and Wednesday, ahead of the semi-final. 

Speaking about the loss to India, Mott said while he was disappointed Australia wouldn't go into the semi-final as the top-ranked team – a factor that would bring peace of mind should wet weather threaten the playoffs – his team would not be hitting the panic button ahead of Thursday's match.

"It was a disappointing result, but (India) played well and I suppose for us not to have our best game, I'd rather have it now than in the semi-final," Mott said.

"We've got to keep it in perspective, we won 13 games in a row (before this) and the more you win the closer you get to a loss.

"We've had a bad day and you can look at it too much or you can float on and make sure we're better next time.

"We've got to move on very quickly because we're in a semi in a few days.

"We would have loved to have won and controlled our own destiny in the finals if there's rain...but we've done the hard yards to give ourselves a semi-final."

Australia's semi-final will begin at 4pm local time on Thursday (7am Friday AEDT) with Fox Sports and the Nine Network to broadcast the match.

2018 ICC Women's World T20  

Australia squad: Meg Lanning (c), Rachael Haynes (vc), Nicole Bolton, Nicola Carey, Ashleigh Gardner, Alyssa Healy (wk), Jess Jonassen, Delissa Kimmince, Sophie Molineux, Beth Mooney, Ellyse Perry, Megan Schutt, Elyse Villani, Tayla Vlaeminck, Georgia Wareham

November 9: Australia beat Pakistan by 52 runs

November 11: Australia beat Ireland by nine wickets

November 13: Australia beat New Zealand by 33 runs

November 17: Australia lost to India by 48 runs

November 22: Semi-finals, Sir Vivian Richards Ground, Antigua

November 24: Final, Sir Vivian Richards Ground