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Related Concept Videos

Steady State Concentration01:05

Steady State Concentration

A steady state refers to the level of a drug in the body once it has reached an equilibrium between administration and elimination. It represents the point at which the drug administration rate equals the drug elimination rate, resulting in a relatively constant concentration in the body over time. The dynamic equilibrium is crucial to ensure the drug's effectiveness with minimal risk of toxicity.
Most drugs are administered in repeated doses at fixed intervals or through continuous intravenous...
Longitudinal Research02:20

Longitudinal Research

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
Rational Dosage Regimen: Maintenance Dose and Loading Dose01:24

Rational Dosage Regimen: Maintenance Dose and Loading Dose

A rational dosage regimen considers a drug's pharmacokinetics, including its absorption, distribution, metabolism, and elimination from the body. By understanding these factors, the appropriate dosage can be determined, and the dosing schedule can be designed to achieve and maintain the desired therapeutic effect while minimizing adverse effects.
In most cases, drugs are administered repetitively or infused continuously to maintain a steady-state concentration in the body. At a steady state,...
Rolling Without Slipping01:09

Rolling Without Slipping

People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...
Cognitive Dissonance01:38

Cognitive Dissonance

Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
Stability01:28

Stability

The time response of a linear time-invariant (LTI) system can be divided into transient and steady-state responses. The transient response represents the system's initial reaction to a change in input and diminishes to zero over time. In contrast, the steady-state response is the behavior that persists after the transient effects have faded.
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...

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Related Experiment Video

Updated: May 21, 2026

Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation
09:42

Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation

Published on: November 8, 2013

Staying the course.

Grace S Rozycki1

  • 1Division of Trauma/SCC/Emergency General Surgery, Emory University School of Medicine, Department of Surgery, Grady Memorial Hospital, Atlanta, Georgia, USA. grozyck@emory.edu

The American Surgeon
|May 31, 2012
PubMed
Summary
This summary is machine-generated.

Public hospitals, now known as safety net hospitals, have a rich history of innovation and service. Despite challenges, their evolution demonstrates resilience and a continued commitment to community care and medical education.

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Area of Science:

  • Public Health
  • Medical History
  • Healthcare Administration

Background:

  • Public hospitals have historically served vulnerable populations and played a crucial role in medical education.
  • These institutions have consistently faced significant financial challenges, leading to questions about their long-term viability.

Observation:

  • Despite financial and operational hurdles, public hospitals have not only survived but have transformed into modern safety net hospitals.
  • Their historical development is marked by numerous pioneering medical advancements and services in the United States.

Findings:

  • The evolution of public hospitals into safety net institutions showcases their adaptability and enduring importance.
  • Key historical contributions include the establishment of the first municipal ambulance service, blood bank, trauma centers, cardiac catheterization, and civilian burn center.

Implications:

  • The legacy of public hospitals suggests a strong capacity for continued evolution and strengthening, even amidst adversity.
  • Continued focus on community care and medical education will be pivotal for the future success and thriving of safety net hospitals.