Yes, David, it's a really good question. I'll hand to Brett for some further detail on it after my remarks. But look, we've seen -- we saw incredible sort of $30 million in the March quarter, triple-digit millions of dollars in the June quarter, and as you noted, $40 million in the September quarter of what I would call emergency ventilator sales as part of the crisis. It may not go to precisely 0 this quarter, but it won't be as high in the December quarter as it was in the September quarter. And hopefully, as we're seeing the second and third waves, the magnitude, as I said in the prepared remarks, is lower of the second and third waves in terms of the impact on hospitalizations and reaching that sort of peak, ICU peak ventilator capacity. And so on a humanitarian basis, I hope we're right in that prediction that it goes very quickly down.
We are seeing sequentially, from the June quarter to the September quarter, improvements in the number of patients coming through, the prescriptions coming through, and therefore, the devices that we are selling on the sleep side. We expect that improvement to continue through the December quarter. And so as you look through the fiscal year and you think about sort of modeling how that's going to happen, I think you can model a steady increase in the sleep apnea devices. And the sort of, what I will call a secular uptick in masks and accessories sales that was driven by, I think, respiratory hygiene and the importance of getting a clean mask, was not a onetime thing for the March or June quarter. You saw it was sustainable. As we predicted, it was sustainable here through the September quarter. And I think it's sustainable through the December quarter.
I'm a patient and I know how important it is and how exciting it is, frankly, to get that new mask, to get that new cushion and to establish it up. It's like a brand-new cast mill and you get addicted to saying, "Wow, respiratory health is important," and that is one thing through the suffering of COVID-19. It's almost a blessing that we've seen people realize that sleep apnea, COPD and asthma, respiratory health is incredibly important and keeping your device clean and keeping your mask clean is incredibly important as well as accessing data digitally has been incredibly important. So we think all of that will be there, and that's why we talk about this strong sequential increase, steady sequential increase throughout fiscal 2021. Brett, any further color?