How to use the result of a procedure in another procedure?

I have the following procedure:

DELIMITER $$
CREATE PROCEDURE retornaArvoresFeedback()
BEGIN
    SELECT id, flagFeedback, prazoFeedback 
        FROM arvore_classificacao 
        WHERE flagFeedback <> 'null' AND prazoFeedback <> 'null' AND status = 'ATIVO';    
END $$
DELIMITER ;

And in a 2nd procedure, I want to use the results of the 1st procedure to mount a new select and from it go through a WHILE.

For example:

2nd procedure:

DELIMITER $$
CREATE PROCEDURE verificaPrazoFeedback()
BEGIN
    SELECT * tabela2 WHERE fk.id = <valor da tabela2>
    WHILE (condicao)
       --- PERCORRE RESULTADO DO 2º SELECT E FAZ ALTERAÇÕES
    END WHILE;
END $$
DELIMITER ;