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Related Concept Videos

Epistaxis01:30

Epistaxis

136
Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
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Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
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Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia01:16

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

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Intravenous regional anesthesia or the Bier block technique is used to anesthetize a specific limb or extremity. It uses exsanguinated or blood-drained vessels to transport local anesthetics or LAs to the peripheral nerve trunks. Lidocaine without vasoconstrictors like epinephrine is most commonly used for this technique. Other drugs used are prilocaine, ropivacaine, and chloroprocaine. Bupivacaine is not recommended for this technique due to its high cardiac toxicity.
One of the advantages of...
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Local Anesthetics: Pharmacokinetics01:13

Local Anesthetics: Pharmacokinetics

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The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...
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Local Anesthetics: Common Agents and Their Applications01:23

Local Anesthetics: Common Agents and Their Applications

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Local anesthetics (LAs) are commonly used for various applications in medical and dental procedures. Some of the common agents used are cocaine, lidocaine, and bupivacaine.
Cocaine is an ester of benzoic acid and methylecgogine. It is used to anesthetize and vasoconstrict locally. Currently, it is used primarily for topical applications. It is beneficial for surgeries on the upper respiratory tract, providing anesthesia and shrinking the mucosa. Cocaine in the form of cocaine hydrochloride is...
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Clinical Applications of Epidermal Stem Cells01:19

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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Updated: Jun 8, 2025

Author Spotlight: Non-Surgical Treatment of Melasma&#8211; Microneedling with Tranexamic Acid
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Is Topical Tranexamic Acid Effective in Treating Epistaxis?

Kelti M Munroe1, Leigh J Sowerby2, Christopher J Chin1

  • 1Division of Otolaryngology - Head and Neck Surgery, Dalhousie University, Halifax, Nova Scotia, Canada.

The Laryngoscope
|November 7, 2024
PubMed
Summary

Topical tranexamic acid, a treatment for nosebleeds, shows promise as an additional therapy. Current literature suggests it may be a useful adjunct in managing epistaxis.

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Area of Science:

  • Otolaryngology
  • Hematology

Background:

  • Epistaxis (nosebleeds) is a common clinical problem.
  • Topical tranexamic acid is increasingly used for epistaxis management.

Purpose of the Study:

  • To review the existing evidence on the efficacy of topical tranexamic acid in treating epistaxis.

Main Methods:

  • Literature review of studies investigating topical tranexamic acid for epistaxis.

Main Results:

  • Current literature suggests topical tranexamic acid may be a beneficial addition to standard epistaxis treatments.

Conclusions:

  • Topical tranexamic acid may serve as a useful adjunct therapy for managing epistaxis based on available evidence.