Surfactant. Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids or between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants.

New-born baby having a bath

Diarrhea in Children: Common Causes and Treatments Diarrhea is the body's way of ridding itself of germs, and most episodes last a few days to a week. Diarrhea often occurs with fever, nausea, vomiting, cramps, and dehydration. Some of the most common reasons kids get diarrhea include: Infection from viruses like rotavirus, bacteria like salmonella and, rarely, parasites like giardia. Viruses are the most common cause of a child's diarrhea. Along with loose or watery stools, symptoms of a viral gastroenteritis infection often include vomiting, stomachache, headache, and fever. When treating viral gastroenteritis -- which can last 5-14 days -- it's important to prevent fluid loss. Offer additional breast milk or an oral rehydration solution (ORS) to infants and young children. Water alone doesn't have enough sodium, potassium, and other nutrients to safely rehydrate very young children. Be sure to talk to your doctor about the amount of fluids your child needs, how to make sure he or she gets them, when to give them, and how to watch for dehydration. Older children with diarrhea can drink anything they like to stay hydrated, including ORS and brand-name products (their names usually end in "lyte"). Popsicles can also be a good way to get fluids into a child who's been vomiting and needs to rehydrate slowly.

Rheum is made up of mucus, skin cells, oils and dust. The rheum that comes from the eyes and forms eye boogers is called gound, which you may know as eye sand, eye gunk, sleep dust, sleep sand, sleep in your eyes, or eye shnooters. When you're awake, gound doesn't cause any problems.

Wilms tumor, also known as nephroblastoma, is a cancer of the kidneys that typically occurs in children, rarely in adults. It is named after Dr. Max Wilms, the German surgeon (1867–1918) who first described it. Approximately 500 cases are diagnosed in the U.S. annually.

Bone tumors develop when cells in the bone divide without control, forming a mass of tissue. Most bone tumors are benign, which means they are not cancer and cannot spread. However, they may still weaken bone and lead to fractures or cause other problems. Bone cancer destroys normal bone tissue and may spread to other parts of the body (called metastasis). Benign Bone Tumors Benign tumors are more common than malignant tumors of the bones. These are a few common types of benign bone tumors: Osteochondroma is the most common benign bone tumor. It is more common in people under age 20. Giant cell tumor is a benign tumor, typically affecting the leg (malignant types of this tumor are uncommon). Osteoid osteoma is a bone tumor, often occurring in long bones, that occurs commonly in the early 20s. Osteoblastoma is a single tumor that occurs in the spine and long bones, mostly in young adults. Enchondroma usually appears in bones of the hand and feet. It often has no symptoms. It is the most common type of hand tumor.

Ganglion Cyst Surgical Removal

We are looking for 5 patients with knee pain who want to get significantly better in the next 30 days. Click this link to let me know you're interested and learn more.

https://www.drdavidgeier.com/work-with-me/contact/

If you suffer a knee injury, what do you do about it? Should you be concerned? On one hand, you could give it a few days to see if it gets better on its own. How can you know if you risk making the problem worse? In this Ask Dr. Geier video, I offer four signs you have a serious knee injury that could require surgery.

Please note: I don't respond to questions and requests for specific medical advice left in the comments to my videos. I receive too many to keep up (several hundred per week), and legally I can't offer specific medical advice to people who aren't my patients (see below). If you want to ask a question about a specific injury you have, leave it in the comments below, and I might answer it in an upcoming Ask Dr. Geier video. If you need more detailed information on your injury, go to my Resources page: https://www.drdavidgeier.com/resources/

The content of this YouTube Channel, https://www.youtube.com/user/drdavidgeier (“Channel”) is for INFORMATIONAL PURPOSES ONLY. The Channel may offer health, fitness, nutritional and other such information, but such information is intended for educational and informational purposes only. This content should not be used to self-diagnose or self-treat any health, medical, or physical condition. The content does not and is not intended to convey medical advice and does not constitute the practice of medicine. YOU SHOULD NOT RELY ON THIS INFORMATION AS A SUBSTITUTE FOR, NOR DOES IT REPLACE, PROFESSIONAL MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT. You should consult with your healthcare professional before doing anything contained on this Channel. You agree that Dr. Geier is not responsible for any actions or inaction on your part based on the information that is presented on the Channel. Dr. David Geier Enterprises, LLC makes no representations about the accuracy or suitability of the content. USE OF THE CONTENT IS AT YOUR OWN RISK.

SWELLING
If you have a knee that is much more swollen than the opposite knee, especially if the swelling developed soon after you got hurt, then it could be a sign of structural damage. While a small amount of swelling could be normal or a sign of inflammation in the knee, a knee that is really swollen and much larger than the other knee could represent a fracture, torn ACL or other ligament or some other damaged structure.

INABILITY TO FULLY STRAIGHTEN YOUR KNEE
Pain can make it difficult for you to straighten your knee. But being unable to get your knee completely flat can be a sign of an injury like an ACL tear or meniscus tear.

LOCKING OF THE KNEE
Locking is a term orthopedic surgeons use to describe a knee that gets stuck in a certain position. Maybe you can straighten it to a certain point, but it gets stuck around 30 degrees short of fully straight. Or you can’t bend it past a certain point because something inside the knee is blocking it. Catching is a milder form of the same problem, where you can get to the point that the motion stops, but you can twist or rotate your knee past that point.

BUCKLING OR GIVING WAY
Having the tibia (shin bone) shift out from under the femur (thigh bone) usually represents an ACL injury. If your knee buckled during the traumatic injury and keeps happening in the days after the injury, you risk doing more damage to the other structures inside the knee.

This list is not comprehensive, so if you are concerned about your knee injury or knee pain, it never hurts to see your doctor or an orthopedic surgeon.

Cushing's disease is a serious condition of an excess of the steroid hormone cortisol in the blood level caused by a pituitary tumor secreting adrenocorticotropic hormone (ACTH). ACTH is a hormone produced by the normal pituitary gland. ACTH stimulates the adrenal glands (located on top of the kidneys) to produce cortisol, commonly referred to as the stress hormone.

Nelson syndrome refers to a spectrum of symptoms and signs arising from an adrenocorticotropin (ACTH)–secreting pituitary macroadenoma after a therapeutic bilateral adrenalectomy. The spectrum of clinical features observed relates to the local effects of the tumor on surrounding structures, the secondary loss of other pituitary hormones, and the effects of the high serum concentrations of ACTH on the skin. [1] The first case was reported by Nelson et al in 1958. [2]

The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells.

If you look at someone’s back, you’ll see that the spine runs straight down the middle. When a person has scoliosis, their backbone curves to the side. The angle of the curve may be small, large or somewhere in between. But anything that measures more than 10 degrees is considered scoliosis. Doctors may use the letters “C” and “S” to describe the curve of the backbone. You probably don’t look directly at too many spines, but what you might notice about someone with scoliosis is the way they stand. They may lean a little or have shoulders or hips that look uneven. What Causes Scoliosis? In as many as 80% of cases, doctors don’t find the exact reason for a curved spine. Scoliosis without a known cause is what doctors call “idiopathic.” Some kinds of scoliosis do have clear causes. Doctors divide those curves into two types -- structural and nonstructural. In nonstructural scoliosis, the spine works normally, but looks curved. Why does this happen? There are a number of reasons, such as one leg’s being longer than the other, muscle spasms, and inflammations like appendicitis. When these problems are treated, this type of scoliosis often goes away.

There are 3 genetic types of FHH based on chromosome location. FHH type 1 accounts for 65% of cases and is due to inactivating mutations in the CASR gene, localized to 3q21.1. This gene encodes the calcium-sensing receptor (CaSR). Loss of CaSR function results in a reduction in the sensitivity of parathyroid and renal cells to calcium levels so hypercalcemia is perceived as normal. The other 35% have either a mutation GNA11 (19p13.3) seen in FHH type 2 or AP2S1 (19q13.2-q13.3) seen in FHH type 3 (see these terms) or in genes not yet discovered. FHH is rarely caused by auto-antibodies against CaSR in those without a mutation.

How to Check Cervical Mucus

A silent heart attack is a heart attack that has few, if any, symptoms. You may have never had any symptoms to warn you that you've developed a heart problem, such as chest pain or shortness of breath. Having diabetes or prediabetes puts you at increased risk for heart disease and stroke. You can lower your risk by keeping your blood glucose (also called blood sugar), blood pressure, and blood cholesterol close to the recommended target numbersthe levels suggested by diabetes experts for good health. (

CPAP is a treatment that uses mild air pressure to keep your breathing airways open. It involves using a CPAP machine that includes a mask or other device that fits over your nose or your nose and mouth, straps to position the mask, a tube that connects the mask to the machine’s motor, and a motor that blows air into the tube. CPAP is used to treat sleep-related breathing disorders including sleep apnea. It also may be used to treat preterm infants who have underdeveloped lungs.

Direct Laryngoscopy: MICU Fellows Airway Course

Visualization of the larynx by direct or indirect means is referred to as laryngoscopy and is the principal aim during airway management for passage of a tracheal tube. This paper presents a brief background regarding the development and practice of laryngoscopy and examines the equipment and techniques for both direct and indirect methods. Patient evaluation during the airway examination is discussed, as are predictors for difficult intubation. Laryngoscope blade design, newer intubating techniques, and a variety of indirect laryngoscopic technologies are reviewed, as is the learning curve for these techniques and devices.

ABGs Made Easy | Arterial Blood Gas | Acid Base Balance: Everything You Need To Know!