The lungs and respiratory system allow oxygen in the air to be taken into the body, while also enabling the body to get rid of carbon dioxide in the air breathed out. Respiration is the term for the exchange of oxygen from the environment for carbon dioxide from the body's cells.

Experts do not know the exact cause of Zollinger-Ellison syndrome. About 25 to 30 percent of gastrinomas are caused by an inherited genetic disorder called multiple endocrine neoplasia type 1 (MEN1). MEN1 causes hormone-releasing tumors in the endocrine glands and the duodenum.

All forms of heparin (including low-molecular-weight heparin such as enoxaparin) must be stopped immediately in patients with suspected heparin-induced thrombocytopenia (HIT) while awaiting diagnostic confirmation. Patients with HIT remain at high risk of thrombosis even after discontinuation of heparin. Therefore, an alternate, rapidly acting, non-heparin anticoagulant such as direct thrombin inhibitor (eg, argatroban, bivalirudin) must be started immediately.

The "Get up and go" test is most commonly used to assess postural stability. In this test, the physician instructs the patient to stand up from a chair without assistance, walk a short distance, turn around, return, and sit down again. If the patient is unsteady or has difficulties during the test, further evaluation is necessary.

Sliced Fingertip Makeup Tutorial

Meet Toby, the baby who was born premature at 24 weeks. He may be small, but he's definitely a fighter! Share his story

An animation for Acumed demonstrating their new line of screws for fixing fractures. This one is focused on a Scaphoid fracture in the hand.

Impaired awareness of illness (anosognosia) is a major problem because it is the single largest reason why individuals with schizophrenia and bipolar disorder do not take their medications. It is caused by damage to specific parts of the brain, especially the right hemisphere.

HPV causes genital warts and cervical and other anogenital cancers. The HPV vaccine is recommended for girls and women 9 to 26 years of age to reduce infections, but information on safety in pregnant women is limited.

Learn what tests can be used to screen and diagnose syphilis as well as how to treat and prevent the infection.

Benex II Surgical Extraction System

Hemothorax is the presence of blood in the pleural space. The source of blood may be the chest wall, lung parenchyma, heart, or great vessels. Although some authors state that a hematocrit value of at least 50% is necessary to differentiate a hemothorax from a bloody pleural effusion, most do not agree on any specific distinction. Hemothorax is usually a consequence of blunt or penetrating trauma. Much less commonly, it may be a complication of disease, may be iatrogenically induced, [1] or may develop spontaneously. [2] Prompt identification and treatment of traumatic hemothorax is an essential part of the care of the injured patient. The upright chest radiograph is the ideal primary diagnostic study in the evaluation of hemothorax (see Workup). In cases of hemothorax unrelated to trauma, a careful investigation for the underlying source must be performed while treatment is provided.

Fenestration of Middle Cranial Fossa Arachnoid Cyst with Accompanying Subdural Hygrom

This is a demonstration of the scapula manipulation method of relocating a dislocated shoulder

Performed by Kami Parsa M.D. Patient is a 55 year old with a history of previous upper eyelid blepharoplasty with excessive skin removed from both upper eyelids which resulted in bilateral lagophthalmos. Patient could not close her eyes and had problems with severe dry eyes.

Human Glue used to repair a cut in the chin of a toddler

Is Air Travel During Pregnancy Safe? Traveling by air is considered safe for women while they are pregnant; however, the following ideas might make your trip safer and more comfortable. Most airlines allow pregnant women to travel through their eighth month.

Decompression is a surgical procedure that is performed to alleviate pain caused by pinched nerves (neural impingement). During a lumbar decompression back surgery, a small portion of the bone over the nerve root and/or disc material from under the nerve root is removed to give the nerve root more space and provide a better healing environment. There are two common types of spine surgery decompression procedures: Microdiscectomy Lumbar Microdiscectomy Microdiscectomy Surgery Video A microdiscectomy (a microdecompression) is typically performed for pain from a lumbar herniated disc. The surgery is considered reliable for leg pain caused by the herniated disc, most commonly called sciatica by patients, and most commonly referred to by medical practitioners as a radiculopathy. Read more about Microdiscectomy Surgery

Disc Disease Videos Watch Disc Disease Videos There are several symptoms that are fairly consistent for people with lower back pain or neck pain from degenerative disc disease, including: Pain that is usually related to activity and will flare up at times but then return to a low-grade pain level, or the pain will go away entirely The amount of chronic pain—referred to as the patient's baseline level of pain—is quite variable between individuals and can range from almost no pain/just a nagging level of irritation, to severe and disabling pain Severe episodes of back or neck pain that will generally last from a few days to a few months before returning to the individual's baseline level of chronic pain Chronic pain that is completely disabling from degenerative disc disease does happen in some cases, but is relatively rare See Treating Chronic Pain and Depression from Degenerative Disc Disease

ARDS was recognized as the most severe form of acute lung injury (ALI), a form of diffuse alveolar injury. The AECC defined ARDS as an acute condition characterized by bilateral pulmonary infiltrates and severe hypoxemia in the absence of evidence for cardiogenic pulmonary edema. The severity of hypoxemia necessary to make the diagnosis of ARDS was defined by the ratio of the partial pressure of oxygen in the patient’s arterial blood (PaO2) to the fraction of oxygen in the inspired air (FiO2). ARDS was defined by a PaO2/FiO2 ratio of less than 200, and in ALI, less than 300. This definition was further refined in 2011 by a panel of experts and is termed the Berlin definition of ARDS. [3] ARDS is defined by timing (within 1 wk of clinical insult or onset of respiratory symptoms); radiographic changes (bilateral opacities not fully explained by effusions, consolidation, or atelectasis); origin of edema (not fully explained by cardiac failure or fluid overload); and severity based on the PaO2/FiO2 ratio on 5 cm of continuous positive airway pressure (CPAP). The 3 categories are mild (PaO2/FiO2 200-300), moderate (PaO2/FiO2 100-200), and severe (PaO2/FiO2 ≤100).