Boston's sign

Boston's sign
Synonyms
Pronounce	N/A
Specialty	Endocrinology
Symptoms	Twitching of the eyelid when the gaze is directed upwards
Complications	N/A
Onset	N/A
Duration	N/A
Types	N/A
Causes	Hyperthyroidism, particularly Graves' disease
Risks	N/A
Diagnosis	Clinical examination
Differential diagnosis	Other signs of thyroid eye disease
Prevention	N/A
Treatment	Management of underlying thyroid disorder
Medication	N/A
Prognosis	Depends on the control of the underlying condition
Frequency	Rare
Deaths	N/A

Boston's sign is a medical sign used in the diagnosis of pericarditis, a condition characterized by inflammation of the pericardium, the sac-like structure around the heart. It is named after the city of Boston, where it was first described.

Definition

Boston's sign is defined as an increase in the intensity of the heart sounds when the patient leans forward. This is due to the closer proximity of the heart to the chest wall, which allows for better transmission of sound.

Clinical significance

Boston's sign is a useful diagnostic tool in the evaluation of patients with suspected pericarditis. It is one of several physical examination findings that can suggest the presence of this condition, along with other signs such as Ewart's sign, Kussmaul's sign, and Pulsus paradoxus.

Limitations

While Boston's sign can be helpful in the diagnosis of pericarditis, it is not always present in patients with this condition. Furthermore, it can sometimes be seen in other conditions that cause the heart to be closer to the chest wall, such as cardiac tamponade or pleural effusion.

See also

• Ewart's sign
• Kussmaul's sign
• Pulsus paradoxus
• Pericarditis
• Cardiac tamponade
• Pleural effusion