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Related Concept Videos

Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

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Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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Phosphoinositides and PIPs01:42

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Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
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PI Controller: Design01:24

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Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
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Peripheral Artery Disease IV: Nursing Management01:26

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 The nursing management of a patient with peripheral artery disease (PAD) begins with a thorough assessment of the patient’s health history and clinical manifestations.AssessmentHealth History: Evaluate the patient’s history of hypertension, hyperlipidemia, family history of cardiovascular issues, and lifestyle factors such as dietary patterns, smoking, and physical activity.Physical Examination:Assess the affected extremity for decreased or absent peripheral pulses,...
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PD Controller: Design01:26

PD Controller: Design

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In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
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Peripheral Nervous System: Ganglia and Nerves01:24

Peripheral Nervous System: Ganglia and Nerves

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The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
Nerves
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Related Experiment Video

Updated: Aug 29, 2025

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
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Why is UIP peripheral?

Faariah Shakil1, Juan Snijder1, Mary M Salvatore1

  • 1Department of Radiology, Columbia University Irving Medical Center, New York, USA.

Expert Review of Respiratory Medicine
|September 6, 2022
PubMed
Summary

Idiopathic pulmonary fibrosis (IPF) shows a unique peripheral radiology pattern called usual interstitial pneumonia (UIP). This review explores leading theories, such as vascular insult and microaspiration, to explain why UIP distribution is peripheral in IPF.

Keywords:
Usual interstitial pneumonitischest CTgastroesophageal refluxinfectioninflammationtensile forcesvascular insult

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Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Pathophysiology

Background:

  • Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease.
  • The characteristic radiology pattern of IPF is usual interstitial pneumonia (UIP).
  • UIP is uniquely peripheral in its distribution compared to other fibrotic lung diseases.

Purpose of the Study:

  • To investigate the peripheral distribution of UIP in IPF.
  • To explore and evaluate proposed hypotheses for the peripheral nature of UIP.
  • To determine the most likely explanation for UIP's peripheral pattern in IPF pathophysiology.

Main Methods:

  • Literature review of published hypotheses on UIP pathogenesis.
  • Analysis of scientific arguments for vascular insult, tensile forces, microaspiration, and inflammation.
  • Critical evaluation of the pros and cons of each proposed theory.

Main Results:

  • Reviewed four major hypotheses explaining the peripheral distribution of UIP.
  • Assessed the supporting evidence and limitations for each hypothesis.
  • Identified the most plausible explanation based on current IPF pathophysiology knowledge.

Conclusions:

  • The peripheral distribution of UIP is a key feature of IPF.
  • Understanding the underlying mechanisms of UIP's peripheral nature is crucial for IPF research.
  • This review synthesizes current knowledge to propose the most likely cause of UIP's peripheral pattern.