If you are a nurse, you can go to Canada to work as a nurse. There is a shortage of nurses. You will have to take some tests to get licensed to work in Canada as a nurse but you would make good money and have all kind of options to immigrate.
If you are not a nurse, say you took a short course and/or have experience in taking care of the elderly, it would not be a good idea for you to get a job at a nursing home because you would likely be considered a low skilled worker and would have few options to immigrate, that is if you even get a work permit because to get a work permit, the nursing home has to show that nobody else wants to work for them.
There is one immigration program called the live-in caregiver program. This program recognizes a shortage in Canada of live-in caregivers, both nannies and caregivers for the disabled and elderly. The program lets you apply for your immigration after you work as a live-in caregiver for 2 years so if you are not a nurse, that is the program you would want to be in.