Is there in plpgsql a possibility to get record item names and use them?

Question

I need to report record items using "raise notice", but including item names.

raise notice 'rec=%',r; -- is not very good

Is there a possibility to do someting like:

declare
  r record;
  itemname varchar(200);
begin
  select * into r from my_table_unknown_structure;

  for itemname in pg_record_item_names(r)
  loop
    raise notice '%=%,itemname,pg_record_item_value(r,itemname);
  end loop;
end;

Answer 1

The answer is based on the CRAIG RINGER's comment, using "hstore" extension.
I would like to promote his comment as the answer.

declare
    r record;
    h hstore;
begin
    select * into r from more_joined_tables;
    select * into h from hstore(r);
    raise notice '%',h;
end;

OR

declare
    r record;
    h record;
begin
    select * into r from price_list;
    for h in select * from each(hstore(r))
    loop
        raise notice '%',h;
    end loop;
end;