You are correct that Covid will permanently impair some people's lungs - RH heart failure could then be a result. I'm not up on the stats but I imagine someone will post about it.
Cameron van der Burgh, the 31 year old former 2012 Olympic 100-meter breaststroke champion is very sick with it. https://nypost.com/2020/03/22/olympic-swimmer-describes-his-battle-with-coronavirus-worst-ive-ever-endured/