Tuesday 17 January 2012

Captians Error. Costa Concordia

Three people are confirmed dead after a cruise ship carrying more than 4,000 people ran aground off Italy. There were scenes of panic as the Costa Concordia hit a sandbar on Friday evening near the island of Giglio and listed about 20 degrees. People reached land by lifeboats but some swam ashore. Rescue teams have been going from cabin to bad credit          loans cabin, searching for survivors. Italians, Germans, French and British were among the 3,200 passengers. There were also 1,000 crew on board. Helicopters evacuated the last 50 people on the deck who were in a "worsening" situation.



Three people were confirmed dead, Italian coast guard officials said on Saturday morning - fewer than the six or eight deaths reported by Italian media earlier. 

Mediterranean cruise 
The Costa Concordia had sailed earlier on Friday from Civitavecchia port near Rome for a Mediterranean cruise, due to dock in Marseille after calling at ports in Sicily, Sardinia and Spain.One thousand passengers were Italian, with 500 Germans and 160 French

Some "tens" of British passengers are believed to have been on board, said the UK Foreign Office, which is sending a team to the scene. Some passengers told the Associated Press the crew had failed to give instructions on how to evacuate the ship. An evacuation drill was scheduled for Saturday afternoon. "It was so unorganised, our evacuation drill was scheduled for 17:00 (16:00 GMT)," Melissa Goduti, 28, from the US told AP. "We had joked what if something had happened today."

'Groaning noise'
Passengers were eating dinner on Friday evening, when they heard a loud bang, and were told that the ship had suffered electrical problems, one passenger told Italy's Ansa news agency. "We were having supper when the lights suddenly went out, we heard a boom and a groaning noise, and all the cutlery fell on the floor," said Luciano Castro.
Passenger Mara Parmegiani told Italian media there were "scenes of panic".

"We were very scared and freezing because it happened while we were at dinner so everyone was in evening wear. We definitely didn't have time to get anything else. They gave us blankets but there weren't enough," she said. The 290-metre (950 ft) vessel ran aground, starting taking in water and listing by 20 degrees, the local coast guard said.
Orders were given to abandon ship, Deodato Ordona, a cabin steward on the Costa Concordia, told the BBC. 

"We announced a general emergency and took passengers to muster stations," he said.
"But it is hard to launch the lifeboats, so they moved unsecured loans to the right side of the ship, and they could launch."

Hypothermia 
Elderly passengers were crying, said Mr Ordona, adding that he and some others jumped into the sea and swam roughly 400 metres to reach land. Rescued passengers were accommodated in hotels, schools and a church on Giglio, a resort island 25km (18 miles) off Italy's western coast.Most have now been moved to the mainland, Elizabeth Nanni from Giglio's tourist information service told the BBC.

"Usually there are 700 people on the island at this time of year, so receiving 4,000 and some in the middle of the night wasn't easy," she said. "Some people jumped in the sea so they had hypothermia." Searches are still going on for "possible missing people", regional official Giuseppe Linardi told the Italian broadcaster RAI. Once the search of the cabins above the waterline has been completed, scuba divers will then check the decks which were submerged by the crash. 

 
Coast guard official Francesco Paolillo, a local coast guard official, told the AFP news agency there was a 30m hole in the ship but that it was too early to say what exactly had happened.

"We think this happened as a result of sailing too close to an obstacle like a reef," he said.
Costa Cruises, the company which owns the ship, said it could not yet say what had caused the accident. "The gradual listing of the ship made the evacuation extremely difficult," a statement said. "The position of the ship, which is worsening, is making more difficult the last part of the evacuation.

"We'd like to express our deepest gratitude to the coastguard and other emergency services, including the authorities and citizens of the island of Giglio, who did their best in saving and helping the passengers and crew." Two years ago, a Costa Cruises ship crashed into a dock at the Egyptian Red Sea resort of Sharm al-Sheikh, killing three members of the crew. 


Scene from inside one of the lifeboats


The Costa Concordia before the incident

Wednesday 11 January 2012

Volcanoes - How they erupt

A volcano is a fissure or crack in a planet’s surface through which molten lava, gases and ash erupt from below the planet’s surface. The word volcano comes from the name of the roman god of fire Vulcan. The cone that surrounds the fissure in the planet’s surface is built up of lava. A volcano is considered active if it vents lava, gas, or generates seismic activity (earth tremors). Dormant volcanoes are ones which have not erupted for many years but still have the potential to do so. Extinct volcanoes are those which have lay dormant for 100,000 years or more. There are at least 3 different types of bad credit loans volcano these are; the shield volcano, the Strato volcano and the Caldrea volcano.
How do Volcanoes Erupt?
While the shape and size or a volcano may vary the way that it erupts does not. Every volcano has what is known as a magma chamber. This is where hot, molten rock from the earth’s mantle collects. The process of a volcano erupting begins when the pressure in a magma chamber begins to build. This may be caused by the movement of the tectonic plates forcing the magma into smaller areas unsecured loans or the buildup of gases as more magma fills the chamber as plates move apart. The building pressure causes the magma to rise up a series of conduits inside the volcano. When it reaches the fissure or crack at the top of the volcano it erupts. The size of the eruptions depends on a number of factors such as:
  • How much magma is in the chamber prior to eruption
  • How much gas is present in the chamber and the magma itself
  • How much silica is in the magma
  • If there was any water present
If there is only a small amount of silica and water a volcanic eruption will be slow and the lava will flow gradually from the opening. The small amounts of silica cause the lava to be runny and less sticky. Small amounts of water cause only small reactions with the hot magma making to explosive nature less spectacular. In the same way large amounts of silica will make the magma sticky and thick and would create a lave dome on top of the volcano. If high levels of both water and silica are present the eruption would be highly explosive. The water would create steam and lead to fountains of lava.

Monday 9 January 2012

Abdominal Hernia - ouch!

What is an Abdominal Hernia?

In general, a hernia refers to a condition that arises when an organ pushes through a weak area in the muscles or tissue that surround and contain it.
An abdominal hernia occurs when there is a tear in the inner lining of the abdominal wall (the outer layer of muscle, fat and tissue that extends from the bottom of the ribs to the top of the thighs), causing a bulge in the abdominal wall where the organs protrude. The bulge can be either reducible, which means that by applying slight pressure to the area, you can feel the organs being pushed back into the abdominal cavity and the hernia will flatten and disappear, or non reducible, which means the fat or tissue cannot be pushed back into the abdomen and the hernia will not flatten. Whether a hernia is reducible depends on how far it protrudes through the abdominal wall and how tightly it is held by the abdominal muscles.
Hernias are repaired surgically with a simple surgical procedure. Without corrective surgery the condition may lead to a strangulation. This is where the organ or intestine that is protruding through the abdominal wall may have its blood supply cut and die if it becomes tightly trapped. Strangulation of an intestine causes extreme pain, can block digestion and may even cause gangrene in that area of intestine. In this case, emergency surgical repair is required.

Who is at risk of Abdominal Hernia?

A hernia can develop in anyone, from a newborn baby to a senior citizen. The following may increase risk of developing a hernia by straining or increasing pressure on the abdominal wall:
  A chronic cough, such as smoker's cough
  Obesity
  Straining during bowel movements or while urinating
  Pregnancy
  Straining to lift heavy objects
  Persistent sneezing, such as that caused by allergies

Types of Abdominal Hernias

The following are different types of abdominal hernia:

Inguinal Hernia

When a male's testicles descend into the scrotum, this causes a naturally weakened area in the wall of the abdomen, called the internal ring. This weakened area makes men more susceptible to a hernia at this location. An indirect inguinal hernia is the most common type of inguinal hernia. It occurs at the internal ring in the groin area. The intestine drops down into the internal ring and can extend down into the scrotum in men or to the outer folds of the vagina in women. An indirect inguinal hernia can be the result of an inherited weakness at the internal ring or one that occurs later in life. The latter is known as an acquired hernia.

Indirect Inguinal Hernia

Less common than an indirect inguinal hernia, a direct inguinal hernia occurs near the internal ring instead of within it. They are acquired hernias that usually occur after age 40 as a result of aging or injury.

Epigastric Hernia

This type of hernia occurs as a result of a weakness in the muscles of the upper-middle abdomen, above the navel. Men are about three times more likely to have an epigastric hernia than women, and the majority occur in people between 20 and 50 years of age.

Umbilical Hernia

Another natural area of weakness in the abdomen is the navel, which, like the internal ring, is made up of tissue that is thinner than that in the rest of the abdomen. These hernias can occur in babies, children and adults.

Femoral Hernia

A femoral hernia occurs in the area between the abdomen and the thigh, and appears as a bulge on the upper thigh. This type of hernia is more common in women than men.

Incisional Hernia

A type of hernia called incisional can occur at the site of an incision from a previous surgery. The fat or tissue pushes through a weakness created by the surgical scar. An incisional hernia can occur months or years after the initial surgery.
What are the Warning Signs?
A hernia usually first becomes noticeable as a bulge somewhere in the abdomen or pelvic area or in the scrotum for men. If the bulge is reducible, it may enlarge when the person is standing and become smaller when he or she lies down. The changes in the hernia's size are due to the increased pressure on the abdominal wall caused by gravity when we stand. A hernia may cause sharp or dull pain that worsens when having a bowel movement, during urination, or while lifting a heavy object. The pain might worsen as the day progresses, especially with long periods of standing, because of gravitational pressure. Nonprescription drugs such as aspirin and acetaminophen may relieve minor discomfort. In the case of a strangulated hernia that contains intestine, the herniated section of intestine might become blocked. This blockage may cause blood in the stool, constipation, fever, severe pain, vomiting and even shock. If these symptoms are experienced, emergency medical attention is needed. Even with suspected hernias that do not cause these symptoms, it is best to schedule an appointment with a doctor to avoid these complications. The doctor will probably want to perform a physical examination and discuss the patient's symptoms and medical history to determine if a hernia has developed.

How are Hernias Treated?

Laparoscopic Hernia Repair Surgery

Hernia repair surgery is an effective long lasting treatment for hernias. Successful surgery will end discomfort, repair the hernia, and stop the hernia from progressing.

The surgical procedure for hernia repair is a Laparoscopic procedure in which a fiber optic viewing tube and special instruments are used to repair the hernia without making a large incision. This procedure requires less recovery time than traditional hernia repair surgery. The surgery will result in three small incisions, one is usually located in the naval and one on each side of the tummy just above the waistline. The surgery will result in scars about 10 mm in length. These scars will fade in time.

No Treatment

A patient always has the option of not undergoing treatment, but the hernia may become worse and there is a risk of intestinal strangulation.

What can be Expected from Hernia Repair Surgery?

In preparation for the surgery, blood tests, an electrocardiogram (EKG), and/or a chest X-ray may be undertaken depending on the age and fitness of the patient. The patient may be required to stop medications before surgery, including aspirin, because they thin the blood and reduce the post operative healing capacity also some drugs may have dangerous interactions with anesthetics or increase the risk of abnormal bleeding.

The patient may be requested to stay a few days after surgery so that they may be carefully evaluated and returned home in good health. After hernia repair surgery, time should be allowed for rest and recovery at home.

General Anesthesia

Normally General Anesthesia is used. It is a safe, common method of ensuring that no pain is felt while the hernia is repaired. There are some risks involved with general anesthesia, especially if the patient has significant medical problems, which can factor into the choice of anesthetic. These risks will be discussed with the patient. If a general anesthetic is chosen, the patient should not eat or drink anything after midnight of the night preceding the surgery.

During surgery, the surgeon will make an incision at the hernia and either move the contents within the protruding hernia back into the abdominal cavity or remove the contents, especially if the protrusion includes strangulated intestines. In order to repair the hernia, the surgeon will insert a synthetic mesh behind the weekend abdominal wall. In time the synthetic mesh will grow into the weakened tissue forming a strong barrier preventing reoccurrence of the condition. The repair should be permanent and not require any further surgery.

After surgery, the patient may receive fluids and pain-relieving medication through an intravenous (IV) tube for a few hours.

Recovery time will depend on the health of the patient and the type of surgical repair that was performed. The patient should be able to walk after 24 hours however several days rest is needed as there will be some discomfort, swelling, brusing and pain. After a few days once the patient is back at home, they may try to slowly ease back into normal activities. Light activities can usually be resumed in a few days. 

How soon the patient can return to work depends on the type of job that he or she has. A job that is very physically demanding may require more recovery time before returning than a job that does not require putting strain on the body. It is recommended that no strain be put on the body for 6 - 8 weeks after surgery. Light exercise, such as walking, helps increase blood flow and promotes healing.

Lifting should be avoided, but if it is absolutely necessary, only manageable objects should be attempted and lifting should be done with the legs, not the back. Activities such as driving and sex can also strain the incision. The patient should ask when these activities can be resumed. Pain medications may be prescribed for the first few days at home. A patient should never drive while taking pain medications.

A doctor should be notified immediately if any of the bad credit loans following symptoms are experienced after the surgery:
  Fever
  Difficulty Urinating
  Excessive Bleeding
  Redness in the Area of the Incision
  Excessive Tenderness or Swelling
  Severe or Increasing Pain

How can a Hernia Recurrence be Prevented?

After a hernia has been treated there are certain things that can be done to decrease the risk of recurrence. The following suggestions can help reduce the risk of a hernia recurring:
  Maintaining a healthy weight
  Exercising to tone the muscles of the abdomen
  Receiving medical help for chronic unsecured loans constipation, allergies or a chronic cough
  Eating high-fiber foods
  Avoiding the risk factors mentioned earlier