What determines whether an elderly patient can use a metered dose inhaler correctly?

This publication has 7 references indexed in Scilit:

• Therapeutic aerosols 1--physical and practical considerations.
  Thorax, 1983
• The importance of aerosol technique: Does speed of inhalation matter?
  Respiratory Medicine, 1982
• Pressurized bronchodilator aerosol technique: Influence of breath-holding time and relationship of inhaler to the mouth
  Respiratory Medicine, 1982
• Deposition of pressurised aerosols in the human respiratory tract.
  Thorax, 1980
• Effect of lung function and mode of inhalation on penetration of aerosol into the human lung.
  Thorax, 1977
• Use of pressurised aerosols by asthmatic patients.
  BMJ, 1976
• Deposition of Inhaled Aerosols
  Archives of internal medicine (1960), 1973