Quote from SleeepyRN
A person can have a high IQ and not be cut out for nursing.
Precisely. IQ is one component of it. Having a decent memory, high attention to detail, and strong work ethic also have roles in nursing too. Being able to make connections between what you do and what you've learned also plays a part in this.
Really, IQ tests just examine one portion of you, and how well you can test along one dimension of learning, standardized along some idea of where you should be educationally.
An IQ of105? As long as you know what you're doing and why you're doing it, it shouldn't be an issue at all. If you had no idea of your IQ, would you think you're capable of being a nurse?