The 28-year-old actress and reality TV personality was 16 weeks pregnant when she was admitted to the intensive care unit of an undisclosed hospital Feb. 9.
"I'm still working from the ICU. This has been the toughest week of my life, but my love for Shayne Lamas has grown tremendously. My wife is a true fighter. Her heart gave out on Valentine's Day and we had to start the rehabilitation process all over again," Richie wrote in a blog post on TabRag Monday.
"Thank you to Dr. Marquez for saving Shayne's life [again].
"Thank you to everyone for your thoughts and prayers -- they are working! Thank you to Dakota Pike, Lorenzo Lamas, Shawna Craig, Michele Smith, and my family for giving me the strength to get through this. Lastly, a special thank you to Shayne Lamas for not giving up. Press wants her mom back!"
Lamas married Richie in 2010. Their daughter Press was born in November 2011.
Lamas is the daughter of actor Lorenzo Lamas. She is known for her work on the soap opera "General Hospital" and in the reality TV shows "The Bachelor" and "Leave it to Lamas."