And while hospital admissions had fallen for men due to better care, they were continuing to rise in women.
Dr. Sun thinks that the high rate of hospitalization or death is because women don't get early diagnosis and sometimes shortness of breath is thought to be lung disease.
He also points out that most women downplay their symptoms because they are too busy.
The heart is not pumping to meet the needs of the body in heart failure, and common signs include fatigue, shortness of breath and swelling in the legs. Patients commonly develop the condition after a heart attack or due to another problem such as an irregular heart rhythm or high blood pressure.
The Ottawa study also found that within a year after the initial diagnosis, 16.8 percent of women died, compared with 14.9 percent of men.
To conduct the analysis of heart failure's connection with sex contrasts, the specialists took a gander at information on in excess of 90 000 patients determined to have heart disappointment in Ontario more than 5 years, from 2009 to 2014. British experts said similar gender differences existed in the United Kingdom and called for further work to understand why.
Dr. Louise Sun, an anesthesiologist and researcher at the University of Ottawa Heart Institute, says the research highlights the differences in the way heart disease affects men and women. But it's particularly acute in women: Since 1984, heart disease has killed more women than men each year.
During the study period, hospitalisation rates for women surpassed rates for men, with 98 women per 1,000 hospitalised in 2013 compared with 91 per 1000 men.
"Further studies should focus on sex differences in health-seeking behaviour, medical therapy and response to therapy to improve outcomes in women".
"We found that mortality from heart failure remains high, especially in women; that hospital admissions for heart failure decreased in men but increased in women; and that women and men had different associated comorbidities", wrote the study authors.
"The mortality for heart failure for women is not improving, the survival is not improving to the same extent as with men", she said. Sex differences in outcomes of heart failure in an ambulatory, population-based cohort from 2009 to 2013.