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Related Concept Videos

Resistors In Series01:10

Resistors In Series

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A resistor is an ohmic device that limits the flow of charge in a circuit. Most circuits have more than one resistor. If several resistors are connected together and connected to a battery, the current supplied by the battery depends on the equivalent resistance of the circuit. The equivalent resistance of a combination of resistors depends on both their individual values and how they are connected. The simplest combination of resistors is the series combination. 
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Series Resonance01:17

Series Resonance

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The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
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Pulmonary Tuberculosis II01:28

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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
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Pulmonary Tuberculosis V01:28

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Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
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Series and Parallel Capacitors01:14

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Capacitors, fundamental components in electronic circuits, can be connected in series and/or parallel configurations. Each configuration has different impacts on the overall behavior of the circuit.
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Imaging Mycobacterium tuberculosis in Mice with Reporter Enzyme Fluorescence
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[Ocular tuberculosis : A case series].

M Koubaa1, F Smaoui1, S Gargouri2

  • 1Service des maladies infectieuses, CHU Hédi Chaker, Faculté de médecine, Université de Sfax, 3029 Sfax, Tunisie; Unité de recherche « Tuberculose extrapulmonaire », CHU Hédi Chaker, Sfax, Tunisie.

La Revue De Medecine Interne
|March 28, 2018
PubMed
Summary
This summary is machine-generated.

Ocular tuberculosis, a rare manifestation of tuberculosis, often presents as uveitis. Early diagnosis and management, including antitubercular and corticosteroid therapy, are crucial for favorable visual outcomes.

Keywords:
AntitubercularagentsAntituberculeuxMycobacterium tuberculosisMycobacteriumtuberculosisRetinalvasculitisTuberculoseTuberculosisUveitisUvéiteVascularite rétinienne

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Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Public Health

Background:

  • Ocular tuberculosis is a rare form of extrapulmonary tuberculosis, accounting for 1-2% of all clinical presentations.
  • It poses diagnostic challenges due to its varied clinical manifestations.

Purpose of the Study:

  • To investigate the diagnostic and therapeutic characteristics of ocular tuberculosis.
  • To highlight the importance of considering ocular tuberculosis in chronic eye conditions.

Main Methods:

  • A case series of 14 patients diagnosed with ocular tuberculosis between 2006 and 2015.
  • Diagnosis was based on clinical findings and confirmed by positive tuberculin skin test or interferon-gamma release assay.

Main Results:

  • The most frequent presentation was uveitis, affecting 11 patients and 16 eyes.
  • Mean age of patients was 40.7 years; 3 patients had associated extraocular involvement.
  • Antitubercular therapy (mean 10 months) and corticosteroid therapy (11 cases) led to favorable outcomes, though 2 patients had visual sequelae.

Conclusions:

  • Ocular tuberculosis, though rare, remains a diagnostic challenge and should be suspected in chronic ocular symptoms, particularly in endemic regions.
  • Prompt diagnosis and management are essential for improving visual prognosis and preventing long-term complications.