Hi Javi,
*As a result (of something) = 'because of something that has happened'. You might think of the expression 'as a result...' as just another way of saying 'consequently...'
E.g.: ''As a result of the accident, Tom couldn't walk for six months.
''Tom was involved in a serious car accident last night. As a result, he will not be able to walk for six months.
E.g.: ''We couldn't afford to borrow money for a house as a result of the rise in interest rates.''
''There was a rise in interest rates. As a result, we could not afford to borrow money for a house.''
Hope that helps!