Comprehensive MedSurg Study Notes: Geriatrics, System Changes, and End-of-Life Care

Course Logistics, Grading Policies, and Learning Resources

• Faculty Office Location & Availability:

  • Office Location: Room $318$

  • On-campus schedule: Generally available Monday through Thursday.

  • Friday sessions: Voluntary sessions held on select Fridays to assist students.

  • Students can schedule appointments or drop by during available office hours for academic support or assignment review.

• Course Assessment Structure & Quizzes:

  • The course consists of $6$ quizzes and $2$ major examinations (Midterm Examination and Final Examination).

  • Quizzes cover the specific reading assignments and course material assigned prior to or covered in recent lectures.

  • Individual quiz performance is not reviewed publicly in class. Students seeking to review their quiz results must visit Room $318$

  • Quiz content is cumulative and directly prepares students for the midterm and final examinations.

• Dual Class Section Enrollment:

  • All students are required to sign into the primary class attendance sheet every session.

  • A secondary course portal, titled the "Success Class," is designated for students currently performing below the $77\%$ grade threshold to help them elevate their academic standing to $77\%$ or higher.

• Required Textbooks & Course Materials:

  • Primary Textbook: FA Davis Medical-Surgical Nursing: Making the Connection to Practice ($3\text{rd}$ edition).

    • Course assignments follow a flipped-classroom model where reading and preparation must be completed prior to Monday and Wednesday classes.

    • Students facing financial or shipping delays through FA Davis can request a $2$-week extension or rider to access digital assignments.

    • Unexcused late assignment submissions automatically receive a grade of $0$ from the FA Davis online portal.

  • Supplemental Textbook: ATI Content Mastery Series / ATI Nursing Education Text.

    • Serves as an outline and summary format to complement reading from the primary textbook.

    • Assigned readings include Chapter $12$ ("Safety" and "Older Adults $65$ Years and Older") and Chapter $25$

    • ATI material is designed to reinforce core knowledge for course quizzes and national licensure preparation.

• Grading Policies & Gradebook Calculation:

  • Quiz Benchmark Requirement: Students must achieve a cumulative quiz average of at least $55\%$ in the gradebook before any non-quiz grades (such as assignments or extra credit) are added to calculate the overall course grade.

  • Gradebook Updates: Individual assignment averages are recorded progressively. At the midterm, the current cumulative average is posted to the gradebook. At the conclusion of the course, the final comprehensive average replaces the midterm score.

Test-Taking Strategies and NCLEX Preparation

• Licensure Examination Focus:

  • The NCLEX (Boards) is a standardized exam taken by Associate Degree (AD), Diploma, and Bachelor of Science in Nursing (BSN) graduates.

  • The exam measures safe, basic-level clinical nursing care and patient management strategies rather than advanced leadership capabilities.

• Clinical Judgment and Testing Methodologies:

  • Students must develop the ability to articulate the underlying physiological rationale for chosen answers by continuously answering "why is that the correct answer?"

  • Mastery of test-taking strategies enables students to successfully analyze and answer complex clinical scenario questions even when unfamiliar with specific content.

Demographics, Public Health, and Global Aging Dynamics

• Socio-Political & Public Health Impacts of the US Census:

  • Gerrymandering: The practice of dividing and redrawing state electoral districts based on population data to favor one political party over another.

  • Public Health Demand: As the older demographic increases, there is an expanded need for public health nurses, community healthcare infrastructure, and long-term care management.

• Life Expectancy Statistics:

  • Average female life expectancy in the United States: $81$ years.

  • Average male life expectancy in the United States: $76$ years.

  • Combined average US life expectancy: Approximately $78$ years.

  • Trend Note: National life expectancy experienced a temporary downward shift during the COVID-19 pandemic but is steadily rebounding.

• Demographic Breakdown & Global Projections:

  • Oldest-Old Segment: Individuals aged $85$ years and older represent the fastest-growing age demographic in the United States.

  • Current Senior Population: Older adults ($65$ years and older) make up approximately $13\%$ of the current US population.

  • 2030 Demographics: By the year $2030$, the population of older adults in the US is projected to double from $35$ million to $72$ million, representing $20\%$ of the total national population.

  • Global Comparisons: The United States ranks $43\text{rd}$ globally in its proportion of older citizens. Japan has the largest aged population in the world, with over $28\%$ of its total population over $65$ years of age.

  • Health Disparities: FA Davis Chapter $6$, Box $6-1$ (page $70$) outlines specific healthcare disparities affecting geriatric populations.

Biological Theories of Aging and Physiological Lifespan Concepts

• Lifespan Terminology:

  • Maximum Lifespan (MLS): The maximum biological potential lifespan of human tissue and bone structure under ideal conditions, estimated at approximately $125$ years.

  • Life Expectancy: The statistical average number of years an individual is expected to live based on birth year, biological sex, and environmental factors.

• Cellular and Neurological Mechanisms of Aging:

  • Senescence: The intrinsic biological process characterized by a gradual loss of functional capacity in cells, organs, and systemic tissues.

  • Nervous System Regeneration:

    • Peripheral Nervous System (PNS): Retains limited capacity for nerve fiber regeneration.

    • Central Nervous System (CNS): Lacks effective functional regeneration following progressive cell loss.

  • Cellular Aging Theories: Encompasses progressive neuronal cell loss, telomere shortening, cellular damage, and free radical accumulation.

System-Specific Age-Related Changes and Pathophysiology

• Cardiovascular System Changes:

  • Pathophysiology: Arteries lose compliance and undergo stiffening, sclerosis, and calcification.

  • Clinical Outcome: Increased systemic vascular resistance leads to higher baseline blood pressure (hypertension).

  • Coronary Artery Disease: Stenosis of the left main coronary artery (commonly called the "widowmaker") severely compromises myocardial blood supply to the left ventricle, posing a high risk of fatal events.

  • Epidemiology: Cardiovascular disease remains the number $1$ cause of death in the United States.

• Respiratory System Changes:

  • Anatomical Alterations: Reduced chest wall compliance, costal cartilage calcification, and thoracic cage alterations result in a barrel chest appearance.

  • Respiratory Drive: Patients with chronic respiratory alterations adapt to rely on a hypoxic stimulus (low blood oxygen levels) rather than hypercapnia to trigger breathing.

  • Clinical Precaution: Administering unmonitored high-flow oxygen can abolish the hypoxic drive in adapted patients, causing respiratory depression.

  • Infectious Susceptibility: Older adults face an elevated risk of severe pulmonary infections, particularly pneumonia.

• Renal & Physiological Reserve Terminology (FA Davis Chapter 5 & 6, page 70):

  • Homeostasis: The body's intrinsic ability to maintain internal equilibrium or return to a baseline state following physiological stress.

  • Homeostenosis: The progressive, age-related narrowing of physiological reserves, reducing an individual's capacity to restore equilibrium following acute stress or illness.

  • Atrophy: Structural shrinking of organ tissues and reduction in total cell volume.

  • Sclerosis & Calcification: Tissue hardening and structural calcium deposition within vascular walls and organs.

Neurological Concepts: Posturing, Cognitive Decline, and Delirium vs. Dementia

• Pathological Posturing Assessment (FA Davis Chapter 3):

  • Decorticate Posturing: Characterized by abnormal flexion of the arms inward toward the chest ("core") with rigid extension of the legs. Indicates damage to the cerebral cortex or corticospinal tracts; carries a better prognosis than decerebrate posturing.

  • Decerebrate Posturing: Characterized by rigid extension and pronation of the arms alongside rigid leg extension. Indicates severe midbrain or upper brainstem lesions; carries a grave prognosis.

  • Key Clinical Features: Lower extremities remain extended in both posturing types. Posturing can present unilaterally or symmetrically depending on the location of brain damage.

• Differentiating Delirium and Dementia (FA Davis Table 6-4):

  • Dementia:

    • Onset: Slow, progressive, and subtle onset taking place over months to years.

    • Course: Chronic, permanent, and irreversible neurodegenerative decline.

    • Care Goal: Maintain routine, manage safety, and provide long-term supportive care.

  • Delirium:

    • Onset: Acute and rapid onset (e.g., sundowning or secondary to underlying infection like a UTI or hypoxia).

    • Course: Fluctuating, transient, and potentially reversible once the root physiological cause is corrected.

    • Care Goal: Immediate assessment, clinical intervention, and urgent modification of the nursing plan of care.

Geriatric Safety, Elder Abuse, and Medication Management

• Polypharmacy and Medication Safety:

  • The average older adult takes approximately $5$ to $6$ daily prescription medications.

  • Age-related visual decline (such as presbyopia) impairs an individual's ability to read medication labels accurately, elevating the risk of accidental overdose or missed doses.

• Physical Environmental Hazards & Mobility:

  • Environmental hazards like loose throw rugs, poor lighting, and stairs in multi-story ($1$ to $4$ floor) homes increase fall risks.

  • Winter weather conditions (ice, snow) cause seasonal surges in wrist and hip fractures.

  • Hip Fractures: Represent a critical turning point in an older adult's functional independence, often requiring major lifestyle changes or placement in extended family/long-term care facilities.

• Elder Abuse & Patient Advocacy:

  • Nurses must observe for signs of physical, emotional, or financial abuse in vulnerable older adults.

  • When patients exhibit cognitive impairment, nurses must ensure critical health information and consent procedures are properly addressed with designated legal representatives or Power of Attorney (POA).

Palliative Care, Hospice, and End-of-Life Care Principles

• Palliative Care Scope & Focus:

  • Focuses on relieving pain, distressing symptoms, and psychosocial stress associated with severe illness at any stage of diagnosis.

  • Aims to enhance quality of life and relieve the fear of dying in unmanaged pain.

• Domains of Palliative Care (FA Davis Chapter 5, pages 60–62):

  • The framework consists of $8$ key operational domains.

  • Domain 7 (Care of the Imminent Dying Patient):

    • Focuses on active symptom management across the three stages of dying: Early Stage, Middle Stage, and Late Stage (FA Davis Table $5-2$

    • Involves managing noisy respiratory secretions ("death rattle"), dyspnea, and pain.

• The Principle of Double Effect (FA Davis Box 5-2):

  • An ethical concept stating that an action with a intended positive effect (e.g., pain relief) is morally permissible even if it carries an unintended secondary risk (e.g., lowered blood pressure or slight respiratory depression), provided the primary intent is solely to relieve suffering.

• Hospice Care Criteria (FA Davis Box 5-6, page 64):

  • Specifically designated for patients with a certified terminal prognosis of $6$ months or less to live.

  • Prioritizes comfort, pain relief, and emotional support, foregoing disease-directed curative interventions.

• Nurse Self-Care: End-of-life care presents high emotional stress; nurses must utilize peer support networks and self-care practices to prevent burnout.

Key High-Risk Disease Systems and ATI Remediation Requirements

• Autonomic Pharmacology Memory Aids:

  • $\text{Beta-1 } (\beta_1) \text{ Receptors}:$ Target the heart ($1$ heart).

  • $\text{Beta-2 } (\beta_2) \text{ Receptors}:$ Target the lungs ($2$ lungs).

  • End-of-Life Symptom Medications: Includes morphine (for pain and terminal dyspnea) and atropine/anticholinergic agents (to dry up excessive bronchial and oral secretions).

• High-Risk Core Disease Systems in MedSurg:

  1. Cardiovascular System: Widespread systemic involvement; primary source of national chronic disease burden.

  2. Diabetes / Endocrine System: Microvascular and macrovascular complications across multiple organs.

  3. Renal System: Essential for fluid/electrolyte balance and metabolic excretion; highly vulnerable to age-related dysfunction.

• ATI Benchmark & Mandatory Remediation:

  • ATI Content Mastery examinations evaluate cumulative nursing knowledge across Medical-Surgical Nursing sections.

  • Students must achieve a minimum benchmark score of $90\%$ on targeted exams.

  • Any score below the $90\%$ threshold requires mandatory remediation on all missed topics.