Posts Tagged ‘mask making machine’

N95 respirator and surgical mask are similarly protective against influenza

Wednesday, January 27th, 2010

Clinical question How effective is the surgical mask compared to the N95 respirator in protecting health care workers against influenza?

Bottom line Laboratory-confirmed influenza occurred with similar incidence among nurses wearing a fit-tested N95 respirator compared with a standard surgical mask when caring for patients with febrile respiratory illness. Given the increased expense and greater discomfort with use of the N95 respirator compared with the surgical mask, this information should be very helpful for the coming influenza season. (Level of evidence = 1b)

Synopsis Real world evidence comparing different respiratory protective devices is sparse. These investigators randomized (concealed allocation assignment) 446 nurses working full time in emergency departments, medical units, and pediatric units from eight medical centers in Canada to either a fit-tested N95 respirator or surgical mask when providing care within one meter of patients with febrile respiratory illness. The primary outcome measured was laboratory-confirmed influenza. Personnel conducting confirmatory testing for influenza illness remained blind to intervention group assignments. Study subjects wore gloves and gowns when caring for patients with suspected infection. About 30% in each group received influenza vaccine during the study year. Complete follow-up occurred for more than 90% of participants. Using intention-to-treat analysis, laboratory-confirmed influenza occurred with similar incidence in both the surgical mask and N95 respirator group (23.6% vs 22.9%, respectively). In addition, there was a nonsignificant trend for an increased incidence of the specific pandemic H1N1 swine influenza strain in the N95 respirator group compared with the surgical mask group (11.9% vs 8.0%). Using per-protocol analysis with only data from subjects with complete follow-up there was still no significant difference in influenza illness between the two intervention groups. The study was 80% powered to detect a 10% risk reduction with the N95 respirator.

Loeb M, Dafoe N, Mahony J, et al. Surgical mask vs N95 respirator for preventing influenza among health care workers: a randomized trial. JAMA. 2009;302(17):1865-1871. doi:10.1001/jama.2009.1466. Published October 1, 2009. 

Avoiding crowds, not masks, best protection against swine flu

Monday, November 2nd, 2009

Panic over H1N1 influenza, popularly known as swine flu, has been growing day by day in the world with the pandemic — as it is defined by the World Health Organization (WHO) — claiming thousands of lives around the world.

Turkey, which has documented slowly increasing numbers of swine flu cases until recently, when figures almost doubled in a week, has been alarmed by the spread of the virus since cases doubled last week and neared 1,500. It was also last week when the country’s first three swine flu fatalities were reported, which prompted officials to step up measures to prevent the spread of the virus. Although wearing face masks is noted among measures to prevent the swine flu, Turks seem to be reluctant to wear the masks, with various concerns including being a suspected swine flu patient, creating panic and believing that being infected is unlikely. Experts state that although it is not necessary at the time being for everyone to wear a mask in public areas, they stress that avoiding crowded places is of crucial importance to keep the swine flu virus at bay.

“The media have played a major role in arousing public awareness about swine flu in Turkey. But it is enough now. Any more would create panic. There is no need for those who are not infected to wear masks for the time being,” stated Turkish Public Health Association (T-HASAK) President and public health expert Professor Hikmet Pekcan to Sunday’s Zaman. Pekcan seems to be right according to a recent survey on public knowledge about swine flu in Turkey.

According to the survey conducted by AC Nielsen, public consciousness has increased in Turkey regarding swine flu. The survey, which was carried out with the participation of 224 people over the age of 18, has shown that 91 percent of participants had heard of the pandemic, and 86 percent of those who are informed about swine flu are also informed about how the virus is transmitted. According to the survey, 72 percent of respondents noted that the virus is transmitted more commonly through aerosolized droplets — spread by sneezing, coughing, talking or kissing. Ninety-three percent of people surveyed stated that they had been informed about swine flu through television. While 36 percent of those knowledgeable about the virus cited avoiding travel to countries that had documented swine flu deaths as a precaution, 32 percent stated that masks should be worn to avoid the virus.

“Measures taken by the Health Ministry are sufficient for the time being, and there is no need to create panic among the public. The public has been aware of the threat. Those who are infected should wear masks as well as those whose immune systems are weak. The best way to prevent the virus is to avoid going into crowded environments and frequently washing one’s hands,” says Pekcan.

Assistant Professor İbrahim Erayman of Konya Selçuk University also tells people not to ride public transportation unless it is necessary since crowded areas make the virus spread more quickly. “If a person has flu symptoms like sneezing, he or she should wear a mask. People should cover their faces with a handkerchief while sneezing or coughing,” he says.

Stressing that the swine flu virus can be transmitted through aerosolized droplets that can even enter the body through the eyes, Professor Tahsin Yeşildere, the head of the İstanbul Chamber of Veterinary Surgeons (İVHO), also says it is of crucial importance for those with flu symptoms to wear masks. Noting that everybody should be cautious about the virus, he warns people using public transportation in particular. “We should not say ‘Nothing will happen to me’ and and instead should pay attention to warnings. Hands and the nose should be frequently washed. If you are in a crowded place and sneeze, you should not cover your face with your hands but with a handkerchief,” he says.

Professor Pekcan draws attention to the current public awareness of swine flu, which helps keep the virus at bay, and says the H1N1 scare had one positive effect on the public as it got people to adopt some habits to prevent the spread of contagious diseases. “Now people are more cautious in public areas when they sneeze; they wash their hands more frequently, etc. These are ways of preventing other diseases such as seasonal influenza and hepatitis, which also claim the lives of many every year,” he adds.

Quick glance at swine flu epidemic in Turkey thus far

Vkey reported its first case of swine flu on May 15. The number of cases has increased slowly in the country until recently, when figures almost doubled in a week. Following an outbreak at an Ankara school two weeks ago, the school was closed for a week. The Health Ministry announced on Oct. 20 that 582 people had been diagnosed with swine flu in the country since May. Turkey’s first swine flu death occurred on Oct. 24 in Ankara when Mustafa Güneş died at Ankara’s Atatürk Sanatorium, where he had been receiving treatment. The Health Ministry announced on Thursday that a 34-year-old woman who had been receiving treatment for H1N1 in the southeastern province of Diyarbakır died on Thursday. With the death of the woman, Beşire Bozkurt, swine flu fatalities increased to two, and the number of people diagnosed with the virus has risen to 1,411 since May. Another statement from the ministry late Thursday indicated that a 37-year-old woman — who had died at a hospital in the Central Anatolian province of Konya on Monday — also died of swine flu, bringing the death toll from swine flu in Turkey to three.

Making use of a four-day holiday at schools last week since schools were also closed on Thursday for Republic Day, a national holiday, officials disinfected schools. The school buildings were cleaned and disinfected by regular cleaning staff. Workers were directed to focus their efforts on cleaning windows, doors, bathrooms and hallways as well as any other areas of the buildings where students are likely to come into physical contact. Public transportation vehicles in various provinces are also being disinfected, with the İstanbul and Ankara municipalities announcing that they are taking action to increase preventative measures against the virus.

 

How to Make Surgical Masks

Thursday, October 8th, 2009

Whether you’re concerned about personal protection from germs while in public or you’re performing open heart surgery next week, a surgical mask helps protect you from outside contamination and vice versa. There are pre-fabricated surgical masks, but sometimes it’s more fun to make your own. Constructing your own surgical mask can also be a good idea if you’re making a doctor costume for Halloween  and you need a durable mask. Best of all, a mask you make yourself can be customized to fit your own face.

Instructions

Step 1

Make a pattern for your surgical masks. Get a piece of paper and cut out a rough surgical mask shape. Hold it up to your own face and look in the mirror. Is it too big or small? Does it extend too close to your eyes or down below your chin? Keep trimming away paper until you have the shape you want. This is now the pattern for your surgical masks. If you’re planning on making lots of masks, transfer the paper pattern to sturdy cardboard.

 

Step 2

Put your pattern over some soft, thick fabric. Draw the pattern onto the fabric as many times as necessary to make the number of masks you need. Leave a little extra to account for any mistakes you might make. After all, you can always trim the fabric a little, but you can’t put any back.

 

Step 3

Cut 1/2-inch strips of the fabric. Fold these in half and sew them around the edges of your masks to make the edge strong and keep them looking even. These also make the seal a little stronger to keep your breath from spreading too much.

 

Step 4

Attach elastic strips to the surgical masks so you can loop them around your ears, securing the surgical mask in place. You have many options. You can get small cords of elastic and run them through the top and bottom seams of the masks. You can simply sew the lengths of elastic cable to the masks at the top and bottom of the sides, making ear loops.

 

Step 5

Try on the first surgical mask you make to ensure you’re on the right track. Make adjustments to the length of elastic for a tighter or looser fit. This is also an opportunity to see how the mask looks in use. If the elastic pulls the mask too close to your eyes, trim the next mask a little bit to see if you get a better fit.