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A positive Pemberton's sign is indicative of superior vena cava syndrome (SVC), commonly the result of a mass in the mediastinum.Although the sign is most commonly described in patients with substernal goiters where the goiter "corks off" the thoracic inlet, [4] the maneuver is potentially useful in any patient with adenopathy, tumor, or fibrosis involving the mediastinum.
The sign is an imaging finding using a 3.5–7.5 MHz ultrasound probe in the fourth and fifth intercostal spaces in the anterior clavicular line using the M-Mode of the machine. This finding is seen in the M-mode tracing as pleura and lung being indistinguishable as linear hyperechogenic lines and is fairly reliable for diagnosis of a pneumothorax.
Pneumothorax occurs in less than 1% of lung biopsy cases. Laryngospasm is a rare complication but may sometimes require tracheal intubation. Patients with tumors or significant bleeding may experience increased difficulty breathing after a bronchoscopic procedure, sometimes due to swelling of the mucous membranes of the airways.
Percussion and resonance (the quality and feeling of sound) are used to examine lung movement and possible lung conditions. Specifically, percussion is performed by first placing the middle finger of one hand over the area of interest. The middle finger of the other hand is used to strike the last joint of the placed finger.
A portable ultrasound machine used in the prehospital setting. Emergency ultrasound is used to quickly diagnose a limited set of injuries or pathologic conditions, [4] specifically those where conventional diagnostic methods would either take too long or would introduce greater risk to a person (either by transporting the person away from the most closely monitored setting, or exposing them to ...
People who experience any of the following warning signs should see a health care provider immediately or call 911 to rule out a more serious medical condition. - Worst headache of your life
Some of the largest plankton are krill and feed the largest of animals, baleen whales. My first foray into the scientific world was a job sexing Jassa falcata (a tiny amphipod) under a microscope.
(Reuters) -Wall Street was set to open higher on Monday, with the main U.S. stock indexes poised to recoup some losses following a turbulent trading week, ahead of key corporate earnings and the ...