Related Experiment Video
Updated: Oct 21, 2025

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
[Epidemiology of spontaneous nasal, ear and throat bleedings]
N F Plavunov1, A I Kryukov2,3, V A Kadyshev1
1A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia.
Abstract:
Bleeding is a life-threatening condition, requiring an urgent care. The first line of treatment this kind of patients is ambulance doctors (emergency medical team). Spontaneous bleeding (SB), in this case, don't have a traumatic agent (including surgical trauma).
Study Objective:
The purpose of this study was to evaluate spontaneous bleeding epidemiological profile of Moscow city emergency service.
Methods:
Study included statistical reports of Moscow city emergency services medical teams (EMT) were servicing adults. We analyzed total number of calls and number of EMT calls to pa-tients with SB during the period between 2015 and 2019. The excluding criteria was EMT re-calls to patents with SB.
Results:
In a study, it was found that over five-year period of observation, EMT made 15 709 862 calls, included 215 840 calls (1.37%) to patients with SB. It was found that the most frequency sources of SB were: the gastrointestinal tract (33.18%), the nasal cavity (28.14%) and the vagina with the uterus (23.91%). There is the proportion of patients suffering of SB from ENT organs is 28.52% in structure of Moscow city Emergency Medical Service. There are the proportion of epistaxis 98.65%, ear bleeding - 0.89%, throat bleeding - 0.46% in structure of SB from ENT organs. We analyzed, that spontaneous epistaxis most frequent between October and April. This period characterized with 70.6% EMT calls from the total EMT calls to patients with SE.
Related Concept Videos
Epistaxis
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...
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Esophageal Varices-I: Introduction
Esophageal Perforation-I: Introduction
The location of esophageal perforation can vary, occurring anywhere along the esophagus....
Chronic Pharyngitis
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:

