Translation:The patient explain that he has heart problems.
The English translation is incorrect.. Patient is third person singular an the verb "explain" needs to add an "s".
Oops, i havent notice that was the point.... yup, it is a man, unless there is another context, for example: "o paciente falou que ela (his wife) has heart problems"
I don't think this is right. If the portuguese sentence gives no information of the sex of the patient, neither should the english translation. It's not correct to add information when translating.