In third-degree or complete heart block there's no transmission of electrical pulses between the atria and the ventricles through the AV node. A third-degree heart block causes a wide range of symptoms, some of which are life-threatening.
The industryâs recommended cooking times remain the same at 20 minutes per kilo plus 70 minutes for a turkey under 4kg, and 20 minutes per kilo plus 90 minutes for larger birds. Under these rules a 6.5 kilo (14lb) bird would take three hours and 40 minutes to cook.
For a 12-14 lb (5.5-6.5 kg) turkey: Cook for 40 minutes then reduce the temperature to gas mark 3, 325 F (170 C) and cook for a further 3-31/2 hours. Then give it a final 30 minutes (uncovered) at gas mark 6, 400 F (200 C).