Fluids and Electrolytes

body fluids lectures

Paediatric Fluid Replacement

Module 2: Drugs Affecting Fluid & Elec. Balance (Diuretics)

Kidney, Fluids & Electrolyte: Clinical Application (Dr. Hawthrone Slides)

Fluid and Electrolytes

Defining Social Change: Concepts, Scope Conditions, and Theoretical Models Case Study: Historical Adoption of Planners and Calendars Behavioral Shift: Carrying paper date books or daily planners was rare among young adults in the $$1960\text{s}$$ and $$1970\text{s}$$, became ubiquitous in the $$1980\text{s}$$ and $$1990\text{s}$$, and transitioned into modern digital calendar applications on smartphones and computers. Rejection of Psychological and Cultural Explanations: The shift was not caused by a sudden decline in memory capacity (psychological) or shifting stylistic coolness (cultural). Social Structural Causes: Declining Standard of Living: Beginning in the early-to-mid $$1970\text{s}$$, economic shifts forced individuals to work longer hours to maintain basic living standards. By the $$1980\text{s}$$, average weekly work time increased by approximately $$10\text{ hours}$$ compared to $$1970$$. Real Wage Stagnation: Real wages (purchasing power adjusted for inflation) declined. A nominal wage of $$\$100$$ lost real purchasing power over time, forcing longer work schedules. Privatization of Public Goods: Cheap or free social resources were reduced or eliminated. CUNY (City University of New York) eliminated free tuition; college costs expanded rapidly. For example, attending San Diego State University from $$1988$$ to $$1992$$ cost approximately $$\$3,000$$ to $$\$4,000$$ per year (totaling $$\$12,000$$ to $$\$13,000$$ for a full degree), whereas modern public university costs hover around $$\$13,000$$ per year ($$\$50,000+$$ total), driving consumer student loan debt into the trillions. Structural Outcome: The adoption of calendars was a structural necessity to manage an intensified pace of life and protect employment in a demanding economic system. Theoretical Definitions of Social Change: Massey: The sum total of many people's changes in social context undergoing change. Harper \& Light (Core Synthesis): A significant alteration of social structure (patterns of behavior, roles, institutional relations) and cultural patterns (values, beliefs, meanings, knowledge) through time. Chase-Dunn \& Babones: A succession of differences in time with a persistent identity, characterized by the reorganization of relationships among individuals and groups (a purely structural/institutional definition omitting cultural elements). Three Essential Scope Conditions for Social Change: Large Population Scale: Must impact a large number of people relative to the level of analysis (millions of individuals at national or global levels). Structural and Cultural Impact: Must produce significant alterations in how people interact within institutions and how they construct social meanings. Temporal Duration: Must persist over a sustained period of time rather than vanishing quickly. Distinguishing Trends from Social Change: Trends: Transient, localized consumer phenomena (e.g., Labubu dolls, fashion footwear drops, temporary movie crazes) that leave core societal structures and values unchanged. Social Change: Deep technological or structural shifts (e.g., Artificial Intelligence) that alter institutional workflows, workplace recruitment pipelines, educational assessment design, and broad social interaction. Analytical Pitfalls in Social Change Analysis: Presentism: The cognitive bias of treating modern shifts as entirely novel or unprecedented, failing to recognize them as recurring historical cycles (e.g., cyclical capitalist recessions). Executive Declarations vs. Structural Realities: Top-down political declarations (e.g., executive orders attempting to rename Lake Ontario or the Gulf of Mexico) do not constitute social change unless broadly adopted by the populace. Conversely, structural state policy shifts (e.g., ICE expansion, third-party state deportations, structural warehousing) represent true social change. Biological Evolution vs. Sociocultural Evolution Biological Evolution ($$\text{BE}$$): Mechanism: Classic Darwinian evolution operating through natural selection, environmental fitness, and passive genetic adaptation. Case Study — Industrial Peppered Moths (Manchester, England): Pre-Industrial Environment: Forest tree bark was covered in a light, ashy lichen. White/light-colored moths were camouflage-adapted and protected from predators (birds and bats), whereas dark moths were easily spotted and consumed. Industrial Shift: Factory smokestacks released heavy black soot, coating tree bark dark. Light-colored moths lost their camouflage advantage and were rapidly preyed upon. Evolutionary Outcome: Dark moths survived longer, mated, and passed on dark pigmentation genetic material. The light moth population vanished while the dark moth population dominated. Transmission: Passive genetic inheritance passed to offspring via sexual reproduction and random genetic mutations (e.g., recessive blue eye genes). Advantage: Highly efficient, stable, and free from behavioral or social messiness. Disadvantage: Extremely slow, requiring millennia ($$\text{thousands of years}$$) of passive mutation. Individual organisms cannot choose to adapt and face extinction during rapid environmental change. Sociocultural Evolution ($$\text{SE}$$): Mechanism: Conscious human agency, technological innovation, structural reorganization, and shared cultural learning within a single generation. Transmission: Non-genetic cultural transmission, symbolic interaction, policy-making, and institutional adaptation. Application — Anthropogenic Climate Change: Environmental Shift: Global warming, melting polar ice caps, severe weather extremes, ocean current shifts, and geographical disruptions. Sociocultural Response: Humans do not wait for biological mutation; they construct engineering adaptations (levees, dams), implement policy reforms (reducing fossil fuel reliance), and reorganize transportation/housing infrastructure to preserve human populations. Advantage: Exceptional adaptation speed, capable of executing sweeping transformations within a single generation. Disadvantage: Highly messy, complex, financially costly, and heavily dependent on political power, institutional willingness, and human sacrifice.

Chapter 14- Cerebrospinal Fluid Flow (CSF) Pattern (BOOK)

Fluids and Electrolytes

General Physiology: Body Fluids, Homeostasis, and Membrane Transport

Fluid Mechanics Exam 1

Fluids & Electrolytes (Dr. Arnolds Slides)

Artificial Intelligence Concepts, Agents, and Problem Formulation

General Renal Function and Body Fluids

fluid management- lecture 25

Vitamin, Mineral and Fluid Requirements

Unit 6: Kidneys, fluids, and electrolyte ILE 1 pt. 2

Tissue fluid and lymph fluid

Fluid therapy and critical care nutrition

ARTIFICAL INTELLIGENCE (U6)