Transcript: What are the risks? physiological responses to heat stress Literature Acute Physiological Responses to heat stress Heat stress is a What are the early warning signs? expedition safety marathon run through dessert Unique stressors of heat stress Heat Stress
Transcript: The warning signs of heat exhaustion include: muscle cramps. To minimize the effects of heat exhaustion you should move to a cool shaded area. When body temperature rises above 103 degrees and your body fails to sweat to cool the body down this could indicate a heat stroke To protect against heat illness you should: perform heaviest work in coolest part of the day slowly build up tolerance to higher temperature wear light, loose-fitting, breathable clothes HEAT STRESS When using personal protective equipment like respirators or suits. Workers are at an increased risk of heat-induced illnesses when:
Transcript: Heat stress can affect anyone, young or old. Although it can be fatal, but with the right training, controls and preventative measures set in place a worker should get through the day without incident. Cool the victim using the following methods; shower, spray or sponge with cool water, soak clothing with water. If it is possible, get them into a tub of room temperature water. Since heat stress more often occurs outdoors, you may need to get creative. Hydrate the victim by giving them water. Make sure that the water has no have ice, as water too cold may send one into shock. Always remember do not underestimate the hazards of heat stress. When it’s hot you need to drink lots of fluids, dress appropriately and recognize the signs of heat stress and always know how to treat when it happens. Workers will: What rights do workers have when working in hot conditions? Firstly and most importantly, if you are working in any 'at risk' situation you have the right to complain to your employer, and the Ministry of Labour without prejudice to yourself. If your employer has carried out a proper risk assessment and has sufficient controls or control strategies in place to deal with any risks arising from hot work and workplace problems, your health should not be at risk. If your employer has not carried out a risk assessment, and has no appropriate controls to deal with hot work and associated workplace problems the face immediate problems by law. Heat stress is a big concern on a job site, especially on a hot summer day. There are a number of factors that are involved in heat stress like: • Weight – Workers who are larger than their co-workers have a higher chance for heat stress • Physical condition – Being fit helps your body fight heat stress • Previous experience – If you have already experienced a form of heat stress the chances of it reoccurring are higher • Age – The older you are the less your sweat glands are effective • Heart conditions – If you have a heart condition its harder to pump blood to the skin and thus, increasing the chance of heat stress • Recent illnesses – Workers that have recently experienced an illness (diarrhea, vomiting, fever, etc.) have lost electrolytes and increased their chance for heat stress • Alcohol consumption – if the worker has consumed alcohol 24hrs prior to working they could still be dehydrated and their risk of heat stress increases • Medication – Certain medication can reduce sweating, in turn, reducing the cooling potential of your body • Lack of acclimatization – when exposed to elevated temperatures for a few days your body will adjust its self to the new environment. Acclimatization usually starts to take affect 6 – 7 days after prolonged exposure to heat. There are benefits to acclimatization Lower pulse rate and more stable blood pressure More efficient sweating Improved ability to maintain normal body temperatures TRAINING: Engineering Controls: *Engineering Controls are the most efficient way to avoid heat-stress by keeping the area around you cool* Examples: Air conditioned rooms or machinery Improved general air circulation (cooling fans) Reflective shields to redirect radiant heat Employers have a duty under clause 25(2)(h) of the O.H.S.A. to take every precaution reasonable in the circumstances for the protection of a worker. This includes developing hot environment policies and procedures to protect workers in environments that are hot because of hot processes and/or weather. The Ministry of Labour recommends the Threshold Limit Values (TLV's) for heat stress and heat strain. These values are based on preventing workers core body temperatures from rising above 38 degrees C. Majority of heat-related injuries can be prevented or the risk can be condensed. There are four forms of protection/prevention methods that can take place to ensure your safety. Scedule information sessions for employees whose work places them at risk of heat stress. Implement safe work procedures established to prevent heat-induced ilness. Determine any additional rest breaks that may be required as a result of workload and local conditions. Advise workers to drink enough fluids to replace those lost through sweating and breathing. Adhere to the recommended rest break schedule, established to avoid heat exhaustion. If the victim loses consciousness or does not respond quickly to the first aid steps above, go to an emergency room or call for an ambulance immediately. Personal Protective Equipment These are only a few examples of the controls put in place to better protect the workers health and safety. Controls will be tailored to meet the conditions of the work environment. No matter whether you work indoor/outdoor, there must be a heat stress control plan put in place in conjunction with the workplace's joint health and safety committee or worker health and safety representative. Make sure that the person does not gulp down the water, as this can also cause shock. If the person is unable
Transcript: What are some personal risk factors? In restaurants, bakeries, construction sites, manufacturing lines, industrial cleaning, ware house work, assembly lines... It is even possible to get heat stress sitting at a desk in an office, that is if the temperature is excessively hot. In which work environments is heat stress most commonly going to appear in? THE END Some personal risk factors include: Poor physical; fitness Obesity Pre-existing medical conditions chronic skin disorders alcohol and drugs Work Work load Work rate Heat stroke, which is very similar to heat stress can cause permanent damage on your organs(specifically your kidneys) and brain damage. What are some symptoms of heat stress? What is heat stress? Heat stress is a group of consequences due to overexposure or overexertion in excess environmental temperatures. Some symptoms of heat stress may include. Onset of a headache or nausea Decreased efficiency, co-ordination, and alertness. Increased irritability Light-headedness or dizziness Fainting Hands, feet, and ankles swelling, usually one to two days after first exposure. How to reduce your employees chance of getting heat stress at work(Employers) Reduce worker activity through automation or mechanization Cover or insulate hot surfaces to reduce radiant heat Shield workers from radiant heat Provide air conditioning Provide fans for spot on cooling Reduce humidity Heat stress Improve physical fitness Lower salt content in diet Enhance sweating Stay hydrated(lots of water) What are the primary factors of heat stress? Environment: Air temperature Airflow Humidity Radiant heat (e.g., sun, kiln) These 3 main factors can be a cause of heat stress. How to reduce your own risk of getting heat stress(employees) Permanent damages caused by heat stress: Worker Acclimatization Hydration Clothing Medical conditions
Transcript: D. Difficulty in remaining hydrated. B. Skin hotness. C. Significant sweating. C. He has heat exhaustion. C. High body temperature (40 c). THANK YOU Young or old age. 1. Young and old age people are at increased risk of suffering from heat stress due to: A. Lack of information. B. Diseases. C. Medications. D. Difficulty in remaining hydrated. Summary Medications Heatstroke is a medical emergency. Even with immediate treatment, it can be life-threatening or result in serious complications. The first thing do is to call an ambulance, then follow the first aid steps: Types Heat stroke results from prolonged exposure to high temperatures usually in combination with dehydration . Definition of heat stroke is a core body temperature greater than 105 degrees Fahrenheit (40 C) – the hall mark - , that occur after exposure to high temperatures. It is a medical emergency . صصًص Heat cramps are the intermittent, involuntary spasm of muscles that occur in an individual who is physically active in hot or humid weather. It affects the major muscles that are being stressed in the hot environment. *Heat cramps are the earliest symptoms of the spectrum of heat-related illness. Some of the difference between By Ashwaq Asiri Joud Al-Darsoni Randa bin Madi Buthainah Al-Shathri Sara Al-Khelb Sara Al-Mutairi Noir Al-Dosari Nora Al-Refayi Symptoms Heat Stroke Stay out of the sun during the hottest parts of the day, particularly 11am-3pm. If you can't avoid strenuous activity in hot weather, follow the same precautions and rest frequently in a cool spot. Try to schedule exercise or physical labor for cooler parts of the day, such as early morning or evening. If you feel your abilities start to diminish, stop activity and seek out a cool shaded place. Taking breaks or Work-rest cycles give the body an opportunity to get rid of excess heat, slow down the production of internal body heat, and provide greater blood flow to the skin. 5. What is the hall mark symptom that appears in heat stroke: A. Nausea and vomiting. B. Rapid weak pulse. C. High body temperature (40 c). D. Flushed dry Children Advance Symptoms -Significant sweating - Involuntary spasm of the large muscles in the body *When any other symptoms happened, individuals may suffer from heat exhaustion. Get acclimatized Heat Stress Stop all activity and rest Move to a cooler place Drink cool water or sports drinks Remove any tight or unnecessary clothing. Take a cool shower, bath, or sponge bath. Apply other cooling measures such as fans or ice towels. Situations that require exertion in hot weather. is a heat-related illness that can occur after you've been exposed to high temperatures for several days and have become dehydrated. Check the person's rectal temperature and try to reduce it to (39 C) -If a child has stopped breathing, begin rescue breathing Questions Time Drink plenty of fluids to replace fluids lost during sweating. So, Staying hydrated will help your body sweat and maintain a normal body temperature. Drink BEFORE you are thirsty. Replace lost electrolytes such as sodium, potassium and magnesium with food or a sports drink. Eat cold foods, such as salad and fruit, which have a high water content. Do not drink alcohol or beverages with caffeine. become dehydrated Dehydration A lack of air conditioning. Sudden exposure to hot weather Genetic response to heat stress. Lack of information Heat exhaustion 3. Which one of the following is a symptom of heat cramps: A. Headache. B. Nausea and vomiting. C. Significant sweating. D. Fever. Prevention About Heat Stroke 2. Which one of the following is an immediate skin reaction after sun overexposure: A. Skin Blisters. B. Skin hotness. C. Skin peeling. D. Scars. Heat stroke is also known as sunstroke, thermic fever. It is the last stage of Heat stress. It is the most serious form of heat injury and it is a medical emergency that usually follows heat cramps and heat exhaustion. Heat stroke can come on suddenly, but warning symptoms often appear first. Some medications can raise the risk of heat stroke like : Beta blockers - Diuretics . Skin turns red in as little as 30 minutes but most often takes 2 to 6 hours Treatment High body temperature (40C) "The Hall Mark" Wear loose-fitting, lightweight clothing to allow sweat to evaporate. Wear light-colored clothing if you're in the sun. Dark clothing absorbs heat. Wear a hat with a brim to keep the sun off head and face. Use sunscreen to prevent sunburn, which can limit the skin's ability to cool itself. If you are going to work or exercise in hot weather, it's important to acclimatize to the heat for about a week before beginning any intense exercise or work. This allows your body to gradually adapt to the heat. 1-Water depletion; Signs include excessive thirst, weakness, headache, and loss of consciousness. 2-Salt depletion; Signs include nausea and vomiting, frequent muscle cramps, and dizziness. Although heat exhaustion isn't as serious as heat stroke, it isn't something to
Transcript: Rochester 10th highest av. humidity in US – 72.6% Av. humidity never drops below 58% New Orleans – 75.9% Av. (highest US city) Miami – 73.2% Av. Fluid Intake Environmental Factors Heat Exhaustion Every 20-30 min Symptoms: Fatigue, profuse sweating, muscle cramps; fainting possible Heat Disorders Age, weight & degree of physical fitness Recent illness: body may be dehydrated Health problems: a variety of medical conditions such as hypertension affect a person's sensitivity to heat How fast one acclimatizes to temps Proper Diet : Fatty foods & other hard to digest items force the GI Tract to work harder Drugs – certain drugs (prescription or not) hinder the body’s ability to regulate temperature PPE can add to heat stress & increase body temperature Respirators Protective Clothing Arc Flash gear Statistics Every 30-45 min Urine color – simple means of determining if you are dehydrated Click Play Button on Video Statistics from CDC & BLS Treatment: Drink plenty of water & electrolyte replacement drinks (such as Gatorade, Powerade, etc.) Volumes to compare needed liquid replenishment during heavy sweating James Gandolfini, Jr. (Tony Soprano): “Workers need to know how to avoid heat injuries and how to recognize signs of heat stress not only in themselves but in their coworkers too,” he says. “By looking out for each other, they can help protect each other.” Individual Factors Contributing to Heat Stress 32 oz High humidity prevents evaporation of sweat; thus rate of cooling slowed Higher humidity = lower temperatures can cause heat stress Work/Rest Cycles – more frequent breaks needed when outside temps exceed 80 deg F Recognize signs of heat stress & watch for them in co-workers Don’t delay First Aid if someone is experiencing heat related illness How Hot is Too Hot? Effect of PPE Heat Fatigue Heat Exhaustion Heat Stroke Over 95⁰F is the danger zone! Medical Emergency – Call 911 Body temp 104 deg F or above Symptoms: Sweating may stop, hot/dry skin, confusion, irrational behavior, fainting Dehydration – reduces the ability to cool the body Sweat loss average is 34 oz/hour (steady sweating) – but can reach 1/2 gal/hour (heavy sweating) Drink plenty of fluids Take breaks to cool down Watch for signs of heat stress in yourself & others Utilize cooling methods Remove from heat (A/C if available), remove clothing, pour cool water over body & ice packs to arm pits & groin, give water to drink & lay victim down until medical help arrives Caffeine & Alcohol Preventing Heat Illnesses Symptoms: Impaired performance, fatigue, headache, heavy sweating; rash may occur 64oz 88 F + 60% humidity = 95 F Cause: Loss of sodium, electrolytes & dehydration Drink at least 10-20 oz of liquids per hour during steady sweating; 64 oz during heavy sweating Balance water & sport drink intake Don’t wait until thirsty 75% of Americans are chronically dehydrated (drinking only 64 oz/day) Dehydration # 1 reason of fatigue (physical & mental) Treatment: Call 911 How Humidity Affects Cooling Direct cooling: cooling vests, collars or skull caps 20 oz Temps over 95 deg F for longer than 6 hours is very dangerous (this does not take into account being in the sun) Added clothing, PPE & physical work increase heat load How the Body Cools Heat Stroke Treatments: Remove from heat, cool victim by removing clothing, pouring cool water over body, move to air conditioned area if available & giving them cool water to drink Heat Fatigue This is the range you are doing well in staying hydrated. Fans: increase evaporation rate Safe Work Practices Blood goes to the skin & cools via convection (air temp <98F) Sweat cools skin via evaporation Cooling rate affected by humidity Death is possible Re-Hydrating Heat Stress You WILL lose more fluid than you can drink during strenuous work Continue to hydrate after work has ended Find ways to cool off when work is done Every hour – 1 ½ hours Staying Hydrated Heat Stroke How Hot? Av. of 618 heat-related deaths per year Over 2500 heat-related illnesses per year result in days away from work 5 Hour Energy Extra Strength 242 mg/2 oz. bottle NOS High Performance Energy Drink 229 mg/16 oz. can Regular Coffee (Brewed) 212 mg/16 oz. cup Regular Coffee Dunkin’ Donuts 143 mg/16 oz. cup Red Bull Energy Drink 83 mg/8.5 oz. can Mountain Dew 55 mg/12 oz. can This is the range you are already dehydrated. Staying Hydrated Ambient air temperatures: Temp in work area, not necessarily temp on thermometer (shade vs. sun) Humidity: 92F + 70% Humidity = 115F Perceived Temp Air movement: Air Circulation can increase evaporation Air temps above 98F can actually raise body temp Both function as a diuretic in the body – causing more frequent urination Increases dehydration so avoid drinking these beverages Heat Cramps Treatments: Remove from heat, cool victim by removing clothing, fanning & giving them cool water to drink Summary Cooling Methods Caffeine Levels In descending order from highest concentration per ounce of most common caffeine
Transcript: Example of a Jeopardy Template By: Laken Feeser and Rachel Chapman When creating without a template... http://www.edtechnetwork.com/powerpoint.html https://www.thebalance.com/free-family-feud-powerpoint-templates-1358184 Example of a Deal or No Deal Template PowerPoint Game Templates There are free templates for games such as jeopardy, wheel of fortune, and cash cab that can be downloaded online. However, some templates may cost more money depending on the complexity of the game. Classroom Games that Make Test Review and Memorization Fun! (n.d.). Retrieved February 17, 2017, from http://people.uncw.edu/ertzbergerj/msgames.htm Fisher, S. (n.d.). Customize a PowerPoint Game for Your Class with These Free Templates. Retrieved February 17, 2017, from https://www.thebalance.com/free-powerpoint-games-for-teachers-1358169 1. Users will begin with a lot of slides all with the same basic graphic design. 2. The, decide and create a series of questions that are to be asked during the game. 3. By hyper linking certain answers to different slides, the game jumps from slide to slide while playing the game. 4. This kind of setup is normally seen as a simple quiz show game. Example of a Wheel of Fortune Template https://www.teacherspayteachers.com/Product/Wheel-of-Riches-PowerPoint-Template-Plays-Just-Like-Wheel-of-Fortune-383606 Games can be made in order to make a fun and easy way to learn. Popular game templates include: Family Feud Millionaire Jeopardy and other quiz shows. http://www.free-power-point-templates.com/deal-powerpoint-template/ Quick video on template "Millionaire" PowerPoint Games Some games are easier to make compared to others If users are unsure whether or not downloading certain templates is safe, you can actually make your own game by just simply using PowerPoint. add logo here References Example of a Family Feud Template PowerPoint Games are a great way to introduce new concepts and ideas You can create a fun, competitive atmosphere with the use of different templates You can change and rearrange information to correlate with the topic or idea being discussed. Great with students, workers, family, etc. For example: With games like Jeopardy and Family Feud, players can pick practically any answers. The person who is running the game will have to have all of the answers in order to determine if players are correct or not. However, with a game like Who Wants to be a Millionaire, the players only have a choice between answers, A, B, C, or D. Therefore, when the player decides their answer, the person running the game clicks it, and the game will tell them whether they are right or wrong.
Transcript: Heat Cramps Heat Exhaustion Symptoms Muscle pain or spasm What to do? Stop physical activity and move to a cool place Drink water or a sports drink Wait for cramps to go away before you do any more physical activity Seek help immediately if Cramps last longer than 1 hour You’re on a low-sodium diet You have heart problems Symptoms Heavy Sweating Cold, pale, and clammy skin Fast, weak pulse Nausea or vomiting Muscle cramps Tiredness or weakness Dizziness Headache Fainting (passing out) What to do Move to a cool place Loosen your clothes Put cool, wet cloths on your body or take a cool bath Sip water Get medical help right away if: You are throwing up Your symptoms get worse Your symptoms last longer than 1 hour Heat Stroke Symptoms Confusion/Delirious Dizziness Nausea Hot, red, dry, or damp skin Lose of consciousness How to help Call 911- heat stroke is an emergency Move the person to a cooler place Attempt to lower the person's temperature with cold cloths or a cool bath Remove unnecessary clothes like shoes and socks DO NOT give the person anything to drink Work Conditions Heat Safety How the body normally functions Serious working conditions Variety of heat illnesses Preventable actions Prevention Eat a light breakfast Work clothing made from moisture-wicking fabric and light in color Simply soaking an over-garment in cool water can also help you stay cool Normal Body Function Normal core temperature is around 98.6 deg F Sweating is the natural way for the body to maintain this temperature The body is less effective at cooling itself when working in hot, humid weather which is when heat illnesses are most prevalent. Scenarios & Questions? Review While working on a roof, a worker complains that they feel like they are "overheating." After examining your coworker, you are concerned that they are exhibiting signs of heat illness. Which of the following signs or symptoms indicate that heat exhaustion has progressed to heat stroke? A. Muscle cramps in the legs B. Profuse sweating C. Body temperature of 106 deg F D. Heart rate of 170 beats per minute References http://iqvinc.com/precautions-for-construction-workers-in-summer/ https://www.builderonline.com/building/building-science/managing-solar-gain_o https://www.cdc.gov/disasters/extremeheat/warning.html https://www.aspetar.com/journal/viewarticle.aspx?id=472#.YPdIG2hKg2w https://www.shutterstock.com/search/heat+cramps https://omaha.com/weather/you-re-fighting-the-heat-so-much-outdoor-workers-contend-with-punishing-conditions-focus-on/article_5903d994-6cc6-11e7-af4f-bf9afe66ec38.html https://www.cdc.gov/niosh/docs/2016-151/pdfs/fy16_heat-related-illness-poster_2016-151.pdf https://www.cdc.gov/niosh/docs/2016-106/pdfs/2016-106.pdf?id=10.26616/NIOSHPUB2016106 Heat Stress
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