DIP Episode 207 - The USMLE And Geriatrics Part 1

Source / episode info

• Episode: 207
• Title: Divine Intervention Episode 207 – The USMLE And Geriatrics Part 1.
• Published: 2020-01-30
• Source: Episode page

One-liner

This episode provides a comprehensive overview of geriatric care for the USMLE, emphasizing functional assessment via Basic/Instrumental AD Ls, cognitive screening tools like Mini Cog and MMSC, managing polypharmacy using Beers Criteria, diagnosing various types of incontinence, assessing fall risk, and establishing end-of-life directives (POLST).

High-yield summary

• Comprehensive Geriatric Assessment (CGA): This holistic evaluation is paramount in the elderly, covering physical function, cognitive status, sensory deficits (vision/hearing), nutritional status, and psychosocial risks.
• Functional Status: Differentiate between Basic AD Ls (self-care: bathing, dressing) required for independent living at home, and Instrumental AD Ls (IAD Ls: managing finances, shopping, taking meds) necessary for community function.
• Cognitive Screening: Use the Mini Cog or MMSC; a score below 24 on the MMSC suggests cognitive dysfunction. Initial workup must rule out reversible causes (e.g., B12 deficiency, hypothyroidism, hyponatremia).
• Fall Prevention: Screen for falls within the past year and perform the Get Up and Go Test (normal time: 10–12 seconds; abnormal >20 seconds). Interventions include exercise, physical therapy, and Vitamin D supplementation.
• Incontinence Management: Recognize the distinct types (Urgency/Stress/Overflow/Functional) and avoid anticholinergic medications in urgency incontinence due to high risk of delirium.
• End-of-Life Care: Understand the difference between a Durable Power of Attorney (full decision-making power) and a Healthcare Proxy (limited to healthcare decisions). POLST is a physician order for life-sustaining treatment.

Learning objectives

• Differentiate between Basic Activities of Daily Living (AD Ls) and Instrumental AD Ls (IAD Ls) in the geriatric population.
• Apply appropriate cognitive screening tools (Mini Cog, MMSC) and interpret results while considering reversible causes.
• Identify risk factors for falls and implement multi-modal preventative strategies (e.g., Vitamin D, PT).
• Classify different types of urinary incontinence (Urgency, Stress, Overflow, Functional) and select appropriate non-pharmacological management.
• Understand the legal and medical implications of end-of-life care planning, including POLST and Advanced Directives.

Board exam buzzwords

Rapid review table

Board-speak -> diagnosis

Differential diagnosis / distinguishing features

Cognitive Screening Tools

Management pearls

• Polypharmacy: When managing an elderly patient with multiple medications, always review the list using criteria like the Beers Criteria to identify high-risk drugs that should be avoided.
• Depression Treatment: First-line treatment for depression in the elderly is SSR Is. Avoid Tricyclic Antidepressants (TC As) due to anti-cholinergic effects, which can precipitate delirium and orthostatic hypotension.
• Fall Prevention: Implement a multi-modal approach: physical therapy/exercise, Vitamin D supplementation, vision checks (cataracts), medication review, and assessing gait/balance (GUT).
• Pressure Ulcer Care: For Stage 3 or 4 ulcers, consider prophylactic bowel and bladder management to prevent secondary skin and soft tissue infections.

Don't miss

Integration & clinical reasoning

• Hearing Loss & Depression: Hearing impairment is a significant risk factor for depression and reduced quality of life in older adults; screening should be proactive.
• Polypharmacy & Falls: Polypharmacy increases the risk of drug interactions, leading to falls, making medication reconciliation a primary geriatric intervention.
• Incontinence & Delirium: The use of anticholinergic drugs for urinary urgency is contraindicated in the elderly due to their high potential to trigger delirium.

Concept connections / cross-references

• For detailed information on fall prevention and physical therapy protocols, see [Episode 12].
• For comprehensive guidelines on medication review and drug interactions, see [Episode 45].
• For advanced topics in palliative care and end-of-life decision making, see [Episode 37].

High-yield association table

Key terms glossary

Study optimization

Question pattern recognition

• The "Best Answer" Trap: In geriatrics, the best answer is often not a single drug or intervention but a combination of lifestyle changes, physical therapy, and medication review.
• Functional vs. Medical Diagnosis: Be able to distinguish between true medical deficits (e.g., neuropathy) and functional limitations (e.g., inability to reach the toilet due to arthritis).
• Legal/Ethical Decision Making: Know the difference between a patient's legal capacity, their proxy's authority, and the specific scope of documents like POLST.

Test yourself

Common mistakes to avoid

Common traps

OMM / COMLEX integration

• Renal & Ureteral Viscerosomatic Reflexes (T10–L2): Kidneys and upper ureters receive sympathetic innervation from T10–T11 (aorticorenal ganglion), with Vagus nerve parasympathetics. Lower ureters and bladder receive sympathetics from T12–L2, with Pelvic Splanchnic parasympathetics (S2–S4). Acute nephrolithiasis causes intense paraspinal spasm from T10 to L2.
• Chapman Reflex Points: Kidney anterior point is 1 inch superior and 1 inch lateral to the umbilicus (posterior: T12–L1 intertransverse space). Bladder anterior point is periumbilical and over the pubic symphysis.
• Psoas Spasm in Ureteral Colic: The ureter courses along the anterior surface of the psoas major muscle. A passing calculus irritates the psoas, inducing secondary psoas spasm, pelvic sidebending, and compensatory non-neutral lumbar somatic dysfunction (L1–L2 flexed, sidebent, and rotated).