Orbital cellulitis

Orbital cellulitis

exam 2

exam 2

Cardiovascular system anatomy and physiology
Coronary circulation
Lymphatic system anatomy and physiology
Blood pressure, blood flow, and resistance
Pressures in the cardiovascular system
Laminar flow and Reynolds number
Resistance to blood flow
Compliance of blood vessels
Control of blood flow circulation
Microcirculation and Starling forces
Measuring cardiac output (Fick principle)
Stroke volume, ejection fraction, and cardiac output
Cardiac contractility
Frank-Starling relationship
Cardiac preload
Cardiac afterload
Law of Laplace
Cardiac and vascular function curves
Altering cardiac and vascular function curves
Cardiac cycle
Cardiac work
Pressure-volume loops
Changes in pressure-volume loops
Baroreceptors
Chemoreceptors
Renin-angiotensin-aldosterone system
Normal heart sounds
Abnormal heart sounds
Action potentials in myocytes
Action potentials in pacemaker cells
Excitability and refractory periods
Cardiac excitation-contraction coupling
Cardiac conduction system
Cardiac conduction velocity
ECG basics
ECG normal sinus rhythm
ECG intervals
ECG QRS transition
ECG axis
ECG rate and rhythm
Cardiovascular changes during postural change
Physiological changes during exercise
Approach to dyspnea: Clinical sciences
Approach to pneumoperitoneum and peritonitis (perforated viscus): Clinical sciences
Approach to postoperative respiratory distress: Clinical sciences
Chest X-ray interpretation: Clinical sciences
Airway obstruction: Clinical sciences
Aspiration pneumonia and pneumonitis: Clinical sciences
Asthma: Clinical sciences
Atelectasis: Clinical sciences
Chronic obstructive pulmonary disease: Clinical sciences
Community-acquired pneumonia: Clinical sciences
COVID-19: Clinical sciences
Hemothorax: Clinical sciences
Hospital-acquired and ventilator-associated pneumonia: Clinical sciences
Influenza: Clinical sciences
Lung cancer: Clinical sciences
Pleural effusion: Clinical sciences
Pneumothorax: Clinical sciences
Pulmonary embolism: Clinical sciences
Tuberculosis (pulmonary): Clinical sciences
Upper respiratory tract infections: Clinical sciences
Eustachian tube dysfunction
Conductive hearing loss
Otitis externa
Otitis media
Tympanic membrane perforation
Corneal ulcer
Conjunctivitis
Eye conditions: Inflammation, infections and trauma: Pathology review
Hordeolum (stye)
Keratitis
Neonatal conjunctivitis
Orbital cellulitis
Periorbital cellulitis
Uveitis
Glaucoma
Cataract
Eye conditions: Refractive errors, lens disorders and glaucoma: Pathology review
Age-related macular degeneration
Retinoblastoma
Diabetic retinopathy
Retinal detachment
Retinopathy of prematurity
Eye conditions: Retinal disorders: Pathology review
Bitemporal hemianopsia
Color blindness
Cortical blindness
Hemianopsia
Homonymous hemianopsia
Bacterial epiglottitis
Laryngitis
Laryngomalacia
Allergic rhinitis
Choanal atresia
Nasal polyps
Nasopharyngeal carcinoma
Nasal, oral and pharyngeal diseases: Pathology review
Aphthous ulcers
Ludwig angina
Oral cancer
Parotitis
Sialadenitis
Temporomandibular joint dysfunction
Warthin tumor
Esophageal cancer
Gastroesophageal reflux disease (GERD)
Retropharyngeal and peritonsillar abscesses
Sleep apnea
Zenker diverticulum
Thyroglossal duct cyst
Thyroid cancer
Thyroid nodules and thyroid cancer: Pathology review
Hyperparathyroidism
Hypoparathyroidism
Parathyroid disorders and calcium imbalance: Pathology review
Vertigo
Vertigo: Pathology review
Meniere disease
Labyrinthitis
Acoustic neuroma (schwannoma)

Key Takeaways

Orbital cellulitis is inflammation of the tissues surrounding the eye. It most commonly refers to an acute spread of infection into the eye socket from either the adjacent sinuses or through the bloodstream. When it affects the rear of the eye, it is known as retro-orbital cellulitis. Common signs and symptoms of orbital cellulitis include pain with eye movement, sudden vision loss, bulging of the infected eye, and limited eye movement. The treatment involves antibiotics to clear the infection, and sometimes surgical drainage to drain abscesses if present.