In Nevada, the elements for a civil claim of gross negligence are:

1. Defendant owed a duty of care to plaintiff;
2. Defendant breached that duty, failing to exercise even the slightest degree of care;
3. Defendant engaged in an act or omission respecting legal duty of an aggravated character, or with willful, wanton misconduct;
4. The breach was the legal cause of plaintiff’s injuries; and
5. Plaintiff suffered Causation and damages.

Gross negligence is substantially and appreciably higher in magnitude and more culpable than ordinary negligence. Gross negligence is equivalent to the failure to exercise even a slight degree of care. It is materially more want of care than constitutes simple inadvertence. It is an act or omission respecting legal duty of an aggravated character, as distinguished from a mere failure to exercise ordinary care. It is very great negligence, or the absence of slight diligence, or the want of even scant care. NEVADA JURY INSTRUCTIONS 6.21; Bearden v. Boulder City, 89 Nev. 106, 507 P.2d 1034 (Nev. 1973).

See elements for other claims at the Nevada Law Library