Top videos
Mitosis is the process in which a eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. The word "mitosis" means "threads," and it refers to the threadlike appearance of chromosomes as the cell prepares to divide.
In cases when the presentation is unclear, ultrasonography is the imaging methodology of choice. The characteristic finding is the presence of a "target sign". Ultrasonography is not required in patients with obvious clinical diagnosis (as seen in this patient). Such patients can proceed directly to treatment with diagnostic and therapeutic air (pneumatic) or water-soluble (hydrostatic contrast) enema.
A craniotomy is the surgical removal of part of the bone from the skull to expose the brain. Specialized tools are used to remove the section of bone called the bone flap. The bone flap is temporarily removed, then replaced after the brain surgery has been done.
mply put, relapses, also known as flare ups, or (MS) attacks are new or worsening MS symptoms. But there is a concrete definition used by healthcare providers to identify MS attacks. To be considered an MS relapse: Old symptoms of MS must have become worse or new symptoms appeared.
Human immunodeficiency virus infection / acquired immunodeficiency syndrome (HIV/AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV).[1] During the initial infection a person may experience a brief period of influenza-like illness. This is typically followed by a prolonged period without symptoms. As the illness progresses it interferes more and more with the immune system, making people much more likely to get infections, including opportunistic infections, and tumors that do not usually affect people with working immune systems.
HIV is transmitted primarily via unprotected sexual intercourse (including anal and even oral sex), contaminated blood transfusions and hypodermic needles, and from mother to child during pregnancy, delivery, or breastfeeding.[2] Some bodily fluids, such as saliva and tears, do not transmit HIV.[3] Prevention of HIV infection, primarily through safe sex and needle-exchange programs, is a key strategy to control the spread of the disease. There is no cure or vaccine; however, antiretroviral treatment can slow the course of the disease and may lead to a near-normal life expectancy. While antiretroviral treatment reduces the risk of death and complications from the disease, these medications are expensive and may be associated with side effects.
Genetic research indicates that HIV originated in West-central Africa during the early twentieth century.[4] AIDS was first recognized by the Centers for Disease Control and Prevention (CDC) in 1981 and its cause—HIV infection—was identified in the early part of the decade.[5] Since its discovery, AIDS has caused nearly 30 million deaths (as of 2009).[6] As of 2010, approximately 34 million people have contracted HIV globally.[7] AIDS is considered a pandemic—a disease outbreak which is present over a large area and is actively spreading.[8]
HIV/AIDS has had a great impact on society, both as an illness and as a source of discrimination. The disease also has significant economic impacts. There are many misconceptions about HIV/AIDS such as the belief that it can be transmitted by casual non-sexual contact. The disease has also become subject to many controversies involving religion.
all pregnant women be screened for Chlamydia at the first prenatal visit. Women under age 25 and those at increased risk for chlamydia! Infection should have repeat testing in the third trimester. Chlamydia endometritis during pregnancy can lead to chorioamnionitis and premature delivery of the fetus. Untreated infection during pregnancy can also lead to conjunctivitis (ophthalmia neonatorum) and pneumonia in the newborn baby
Most of us have taken a sex education class or two. We know what condoms are supposed to be used for. Whether or not people use condoms every time they are necessary is a totally different story. You were probably taught the necessary but embarrassing lesson of how to put a condom on by the visual aids your sex education teacher provided. Of course, these tactics are a little more modern, so depending on how old you are, you may not have learned the basics of condom use until after high school. Yes, condoms are a pretty smart invention and they’re pretty safe to use. They are over 90% effective against sexually transmitted diseases (STDs), and of course, they help to reduce the risk of pregnancy by 98%. Some guys claim that they’re not comfortable to wear, which is why some companies have come up with new condoms that have a more natural fit and provide pleasure for both partners. However, with all the things we know about condoms, there’s still so much we don’t know. Here are 10 facts about condoms that are just as interesting as the condoms themselves.
PURPOSE: Laparoscopic partial nephrectomy (LPN) is an alternative modality of treatment for small sized renal cell carcinoma. Robot assisted laparoscopic partial nephrectomy (RLPN) has also been performed with an advantage in repairing resected surface after tumor resection. We compare the periopera...
tive data of patients treated with laparoscopic partial nephrectomy with those of RLPN undertaken patients. MATERIAL AND METHOD: From September 2006 to April 2008, 22 patients were treated with LPN and 22 were RLPN. 3 arms were used for RLPN; camera was inserted through the 12mm, umbilical trocar port. The laparoscopic Bulldog clamp was used for the clamping of renal hilum. We retrospectively compared each group about tumor size, operation time, estimated blood loss, warm ischemic time and hospital stay. RESULT: Operation time of LPN was shorter than that of RLPN (p=0.033). Tumor size, estimated blood loss and hospital stay was not significant different in each group. No case had conversion to open surgery. 1 patient of RLPN group, however, had conversion to radical nephrectomy due to severe bleeding. CONCLUSION: RLPN was safe and feasible in small sized renal cell carcinoma. Warm ischemic time was reasonable and morbidity associated with RLPN was also low. RLPN LPN p-value Tumor Size (cm) 2.5 2.1 0.605 Op time (min) 169.3 140.8 0.033 EBL (ml) 243.2 213.2 0.878 Warm Ischemic Time (min) 29.2 26.4 0.237 Transfusion (%) 4.5 4.5 0.756 Hospital stay (day) 4.4 5.5 0.053
CRT is a clinically proven treatment option for some individuals with heart failure. A CRT device sends small electrical impulses to both lower chambers of the heart to help them beat together in a more synchronized pattern. This may improve the heart’s ability to pump blood and oxygen to your body. A CRT system is made up of two parts. The heart device, which is actually a tiny computer, plus a battery, contained in a small titanium metal case that is about the size of a pocket watch. Insulated wires, called leads, that are implanted to carry information signals from your heart to the heart device and to carry electrical impulses to your heart After the device system is implanted, an external computer, called a programmer, located at your doctor's office or clinic can be used to program the heart device and retrieve information from your heart device that will assist your doctor in your heart failure treatment. Your doctor will schedule periodic monitoring which may be done remotely if physician deems appropriate
In this medical video: This 72-year-old patient was unable to resist blinking when we tapped on the glabella. This is the glabellar reflex or Myerson's sign . It is often an early sign of Parkinson's disease, but can also be seen in early dementia as well as other progressive neurologic illness. Note the left (i.e., asymmetrical) hand resting tremor.