Ica Frality And Ageing Flashcards
• Learn the definition of frailty
• Be able to describe several specific clinical consequences of frailty
• Physiological:
• Clinically recognizable state of increased vulnerability resulting from aging.
Associated decline in reserve and function across multiple physiologic systems such that the ability to cope with everyday or acute stressors is comprised.
• Phenotypic definition:
• Low grip strength, low energy, slowed waking speed, low physical activity, and/or unintentional weight loss.
• Be aware of how frailty can be measured
Notion
• Be able to list several indicators which clinicians can use to detect frailty
Geriatric giants
• Immobility
• Instability (Falls)
• Incontinence
• Impaired memory (Dementia, Delirium)
• Iatrogenesis (Caused by us!)
• Be able to discuss how moderate to severe frailty should impact the management plan for the patient
• Be able to describe component parts of Comprehensive Geriatric Assessment
To be aware of common changes associated with ageing across key body systems and how such changes can have an impact on pharmacokinetics and safe prescribing
Skin
Sk in
- Atrophy of the epidermis
- Destruction to dermal-epidermal junction
- Dermis thickness decreases
- Collagen fragmentation
- Elastin degradation
- Prone to diseases
•
CVS
CVS
structural change
- Ventricular hypertrophy
- Interventricular septal hypertrophy
- Aortic sclerosis
functional change
- Diastolic dysfunction
- Decreased cardiac output
- Decreased maximal heart rate
- Increase cardiac workload
- Baroreceptor response
Electrophysiological
- SA node atrophy
- Action potential prolongation
Vascular structure
- Large arteries dilate
- All arterial walls thicken
Vascular function
- Decrease arterial compliance
- Endothelial vasodilation is impaired
Resp
Respiratory
- Chest wall compliance
- Lung Volume: ↑ RV, ↑ FRC, ↓ VC
- Structure of the lungs
- Senile hyperinflation
- Lung compliance
- Infection susceptibility
Neurology
Some parts shrink – particularly areas related to
learning and complex mental activities
- Brain volume
- Neuronal density reduces by almost 1/3 by the
age of 80
Renal
- Decrease in the volume and weight of the kidneys
- Decline in the total number of glomeruli per kidney
- Tubular function -
Urinary incontinence -
Prostate hyperplasia
Gi
Oesophagus
- Decrease peristalsis
- Delayed transit time
- Decreased relaxation of the lower sphincter on swallowing
Stomach
- Atrophic gastritis
- Colon
- Decreased intestinal motility
- Diverticulosis
To be broadly aware of the problem of malnutrition in older patients and be familiar with the MUST Nutritional Tool.
MUST
- Identify patients who may be at nutritional risk
or potential risk - 5 step screening process
BMI (18.5-20=1, <18.5=2)
Weight loss (5-10%=1)
Acutely ill and no nutritional intake for >5days = 2
Overall - 2 or more = high risk
Management