What is a patent foramen ovale (PFO)? In about 25% to 33% of people (that is, one in three to four individuals), the foramen ovale tissue flap does not close completely. When the foramen ovale remains open, it is called a â patent foramen ovaleâ or PFO. A PFO can allow a small amount of blood to pass from the right side of the heart to the left side
the minimum necessary standard is intended to be consistent with and not override professional judgment and standards and that practices must implement policies and procedures based on their own assessment of what phi is reasonably necessary for a particular purpose
Once an assessment of first-aid needs has been carried out, the findings can be used to decide what first-aid equipment should be provided in the workplace. The minimum requirement is a suitably stocked first-aid box, see FAQ 'First-aid box' .here is a British Standard BS 8599 for first aid kits, it is not a regulatory requirement under the Health and Safety (First-Aid) Regulations 1981 to purchase kits that comply with this standard. Instead the contents of a first aid box is dependent on an employers first aid needs assessment.