DIP Episode 268 - USMLE Nov 2020 Changes Series 4: Palliative Care 2

Source / episode info

**Episode:**268
**Title:**Divine Intervention Episode 268 – USMLE Nov 2020 Changes Series 4: Palliative Care 2.
**Published:**2020-10-11
Source:Episode page

One-liner

This episode provides an extensive review of palliative care principles, covering advanced life-sustaining treatment documentation (Living Will, POLST), multimodal management of severe symptoms like cancer pain and dyspnea, and specific pharmacological strategies for GI complications such as nausea and constipation.

High-yield summary

Palliative care is appropriate at any stage of a serious illness, not just when death is imminent; it benefits the patient and family.
Advanced Directives Hierarchy: The patient's current, lucid decisions always supersede all legal documents (Living Will, Durable POA) or clinical guidelines (POLST).
Pain Management: Use the WHO three-step analgesic ladder: Non-opioids for mild pain; Opioids starting at moderate pain; High doses/multiple opioids for severe pain.
Dyspnea: The first-line agent is an opioid (e.g., morphine) because it decreases oxygen consumption, dilates pulmonary vessels, and blunts the hypercapnic drive.
GI Symptoms: Nausea management uses a mnemonic of antagonists: Ondansetron (5-HT3), Metoclopramide (D2), Aprypetent (NK1). Constipation prophylaxis often requires stimulant laxatives like Senna.

Learning objectives

Differentiate the roles of advanced care planning documents (Living Will vs. POLST).
Apply multimodal strategies for managing common end-of-life symptoms (pain, dyspnea, nausea, constipation).
Understand the physiological mechanisms by which opioids treat dyspnea and pain in palliative settings.
Identify specific pharmacological agents used to manage GI complications associated with malignancy or opioid use.

Board exam buzzwords

Condition	Key Finding	Association	Board Exam Tip
Palliative Care	Applicable at any stage of illness	Focuses on symptom management for patient and family	Do NOT wait until the end-of-life to initiate care; it is proactive.
Dyspnea (End-stage)	Opioid administration	Decreases O2 consumption, dilates pulmonary vessels	Always prioritize opioids first in severe dyspnea due to multiple mechanisms of action.
Nausea/Vomiting	5-HT3 receptor antagonist	Ondansetron	Remember the mnemonic: Ondansetron (5-HT3), Metoclopramide (D2), Aprypetent (NK1).
Opioid Constipation	Mu-opioid receptor antagonism	Methylnaltrexone, Naloxegol	Use peripheral antagonists to treat constipation without reversing necessary analgesia.