Health insurer Aetna has reported a net income of $536m, or $1.39 per share, for the second quarter of 2011, compared to $491m, or $1.14 per share, for the same quarter of 2010.

In the second quarter of 2011, total revenues were $8.3bn, compared to $8.5bn for the same period last year.

Operating earnings for the second quarter of 2011 were $522m, compared to $450m, for the same corresponding quarter of 2010, with an increase of 16%.

Health care, which provides a full range of insured and self-insured medical, pharmacy, dental and behavioral health products and services, reported a total revenue of $7.7bn for the second quarter of 2011, compared to $7.9bn for the second quarter of 2010.

Insurer said the decrease in revenues in health care segment was primarily attributable to lower commercial insured membership in 2011.

Aetna chairman, CEO and president Mark Bertolini said the firms second-quarter financial results reflect strong operating fundamentals across the enterprise.

"Three main factors account for our success: disciplined pricing and medical cost management; lower than anticipated utilization of health care services by our members; and strong cash flow generation," Bertolini said.