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Limit Heart Attack Likelihood with Safe Snow Shoveling

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With the northeast hammered by its fourth major snowstorm this month, businesses and property owners in many areas are digging out, breaking out the salt pellets and shovels (just when they were hoping to stash them for the next eight months).

The risk of myocardial infarction rises during snowstorms, especially for someone who is not already physically active. According to the Nationwide Children’s Hospital, snow shoveling leads to about 100 deaths and 11,500 injuries and medical emergencies each year. That is why, to be safe, you and your maintenance worker, or team, should consider some hazards before a dig-out and clearing.

The biomechanics of shoveling are unlike general cardiovascular exercise. In contrast to running or walking, shoveling puts much more stress put on the upper body, as Popular Science noted:

Each time you thrust the snow, the arms rise high, increasing blood pressure further. In addition, you typically perform the Valsalva maneuver: a natural tendency to generate lots of chest pressure without exhaling breathing out (like tennis players do when they hit a ball, or when you push hard against something). This further increases blood pressure.

The American Heart Association (AHA) warns that the potentially lethal combination of intense physical exertion paired with the cold temperatures increases the heart’s workload to sometimes dangerous levels. Some of the AHA’s tips for an incident-free shovel session include frequent breaks, avoiding alcohol and large meals before and after shoveling. The AHA also recommends that you:

  • Use a small shovel or a snow thrower. The act of lifting heavy snow can raise blood pressure during the lift. It is safer to lift smaller amounts. When possible, simply push the snow.
  • Learn the heart attack warning signs and listen to your body. Even if you’re not sure it’s a heart attack, have it checked out. Carry your cellphone in your pocket and call 911 immediately if you experience any signs of a heart attack.
  • Be aware of the dangers of hypothermia. Heart failure causes most deaths in hypothermia. To prevent hypothermia, dress in layers of warm clothing, which traps air between layers forming a protective insulation. Wear a hat because much of the body’s heat can be lost through the head.

Snowy weather often means we don’t always get the nutrients we need from nature. We normally get our daily dose of vitamin D from the sun—which promotes calcium absorption in the stomach and is needed for bone growth and remodeling—but between grayer skies and our need to dress in layers, it may also be advisable to drink a glass of milk or take a supplement to get your dose. Accuweather also cited new research that “decreased exposure to sunlight may factor into the wintertime heart attack equation.”

As the air gets colder, people bundle up before spending time outdoors, leaving less skin to be exposed to the UV rays which aid in the body’s vitamin D production. A vitamin D deficit can accentuate the inflammation of the arteries.

The Snow & Ice Management Association (SIMA) recommends that you:

  • Take a few minutes to stretch. Shoveling snow is a workout so you need to stretch to warm up your muscles particularly because you are shoveling snow in the cold weather. Stretching before you start shoveling will help prevent injury and fatigue.
  • Push don’t lift. Sounds like something a high school wrestling coach may say but if you push the snow to the side rather than trying to lift the snow to remove it, you exert less energy thereby placing less stress on your body.
  • Drink up! Water that is. SIMA recommends taking frequent breaks and staying hydrated. You should drink water as if you were enduring a tough workout at the gym or running five miles.

 

FIU Bridge Collapse Brings Up Design, Safety Concerns

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Munilla Construction Management rendering of the completed FIU pedestrian bridge.

The 950-ton section of a pedestrian bridge’s collapse at Florida International University (FIU) that claimed six lives on March 15 has put stakeholders, design and installation firms under intense scrutiny. After months of preparation, the 174-foot span had been installed on March 10, and investigators and authorities are trying to establish if negligence played a part in the tragedy on SW 8th Street on FIU’s Modesto A. Maidique Campus.

The bridge was constructed off-site and relocated using Accelerated Bridge Construction (ABC), a popular (and usually successful) industry method that aims to reduce potential risks to workers, commuters and pedestrians and minimize traffic interruptions. According to FIU, the bridge should have been a record-setter; on March 10, the University claimed it was “the largest pedestrian bridge moved via Self-Propelled Modular Transportation in U.S. history.” It was also poised to be the first in the world to be constructed entirely of self-cleaning concrete, which would have ultimately reduced maintenance costs.

Munilla Construction Management (MCM) was the Miami-based construction firm hired by FIU to manage and construct the FIU-Sweetwater UniversityCity Bridge, which jointly worked with design firm FIGG Engineering-Bridge Group. Barnhart Crane and Rigging operated the Self-Propelled Modular Transporters that placed the bridge on its permanent supports, and engineering firm BDI was subcontracted to conduct monitoring while the bridge was moved into place.

It was expected that the footbridge would be completed and operational in early 2019 and would also have served as a study and gathering space for students. The $14.2 million project was funded by Florida Department of Transportation, FIU and the City of Sweetwater, U.S. Department of Transportation (DOT) TIGER Grant, but the blame shifting has already begun. The Miami Herald reported:

…the project required “an independent, secondary design check,” and the design team, FIGG Bridge Engineers, hired another engineering firm, Louis Berger. That firm “was not FDOT pre-qualified for this service, which is required under FIU’s agreement with the state. FIU’s design build team is responsible for selecting a pre-qualified firm and ensuring this process is followed.”

The main span of the FIU-Sweetwater UniversityCity Bridge was installed in a few hours with limited disruption to traffic over the preceding weekend. FIU stated that on the morning of the collapse that MCM and FIGG met to discuss a crack on the on the structure, but ultimately concluded that “there were no safety concerns and the crack did not compromise the structural integrity of the bridge. This meeting lasted approximately two hours and included FIU and FDOT representatives.”

FIU added an FAQ page to its website in the aftermath of the collapse. It clarifies that FIU did not yet own the bridge “because it was still under construction” and names the key stakeholders, but does not yet reveal what was happening at the time of the collapse “because it still does not yet have the information.” The DOT stated that Secretary Elaine L. Chao dispatched Federal Highway Administration professional staff to the site to support the National Transportation Safety Board’s (NTSB) investigation.

An insightful article published by Wired explains the ABC process and looks at other incidents, noting that in this case the collapse could stem from design flaws and possibly loose cables burdened by the weight of the bridge.

Q&A: Cape Town’s ‘Day Zero’

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On March 22, annual World Water Day will be especially relevant, as the United Nations and its co-sponsors hope to raise global awareness of water risks—particularly in Cape Town, South Africa. As we previously reported, a diminishing water supply is that city’s top priority, as it is counting down to a possible “Day Zero” (which had been set for July 9, but the City has stopped providing a date), when it could effectively become the first major city to run dry.

One of World Water Day’s partners is World Wide Fund For Nature South Africa (WWF-SA), an arm of what was formerly known as the World Wildlife Fund. Christine Colvin, senior manager of Freshwater for WWF-SA, recently discussed Cape Town’s struggles and how other major cities and businesses can learn from the preparedness plan and efforts to avoid a total drought.

Risk Management Monitor: Cape Town, which has 4 million residents, has a preparedness plan in effect that includes rationing among 200 water distribution points for 25 liters per person. Do you feel this plan is sustainable?

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Christine Colvin: At this stage, the general consensus is that Day Zero is not as imminent a threat as it was earlier in the year, and in all likelihood, there will be some rain and augmentation schemes will start to come online before dams drop to the critical 13.5% (which would activate the disaster plan).

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Consequently, the major

push is to encourage citizens to stay within their current daily limit of 50 liters of water per person, per day to see us through to the rainy season and beyond. If we are able to achieve this objective, the hope is that we should push out Day Zero as far as possible, thus buying the city time to bring on augmentation schemes.

RMM: How could Cape Town officials explore nature-based solutions (this year’s World Water Day campaign) to its water challenges?

Colvin: Ecological infrastructure is the foundation of water security and the first link in the water value chain. If our catchments are healthy and functional they deliver better quality, more reliable yields of water into our dams and aquifers. If they are invaded with alien vegetation or degraded by over-grazing or over-burning then they yield less water and more silt that will eventually destroy any downstream infrastructure we build to deliver water to our homes and farms. WWF-SA actively advocates the protection of water source areas through, among other things, water stewardship and catchment clearance of alien vegetation and has actively communicated this approach to the City of Cape Town during this drought period.

In our communications to the general public, we also encourage better stewardship of existing natural water sources such as groundwater and rivers, and promoting a water-wise culture. Our stewardship work in the Western Cape, the province in which Cape Town is located, focuses strongly on the agricultural sector which is a key industry for the region.

RMM: What steps can a major city take to prepare for a drought?

Colvin: Our Wednesday Water File on international case studies highlights many pertinent actions, perhaps best summarized in the Australian example:

  • Invest in fixing leaking infrastructure—one of the most cost-effective measures to improve water supplies
  • Introduce a demand management program which includes strict new legal requirements on business and domestic water use, coupled with a major education campaign
  • Diversify water supplies so if one source fails others can be drawn on, among them: dams, desalination, recycled water, rainwater tanks, groundwater, and storm water harvesting
  • Create a water grid which links major regional water supplies so water can be moved to where it is needed 

RMM: How is World Water Day raising awareness to the situation in Cape Town?

Colvin: While water is top of mind in Cape Town, the intention is to remind all South Africans that we live in a water-stressed country and the protection of strategic Water Source Areas and their natural capital is a national project. Water source areas are particularly important—making up 8% of South Africa’s land area but delivering 50% of our river flow to the rest of the country. Good management of these high rainfall mountainous headwater areas delivers a high return on investment downstream.

World Water Day is an important time to reflect on the relationship between water and nature.

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Many, but not all, residents of Cape Town are now aware of the “new normal” in which we are likely to experience much drier periods and have to conserve water but it remains vital to reinforce the message that water does not come from a tap—it comes from nature.

2 Fertility Clinic Failures a ‘Bad Coincidence’

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Equipment failures on the same day at two fertility clinics located across the country from each other—in California and Ohio—may have damaged or destroyed thousands of frozen eggs and embryos.

 The simultaneous “black swan events” appear to have no connection to each other and have experts mystified.

Dr. Carl Herbert, president of the Pacific Fertility Clinic in San Francisco, told ABC News in an interview released Monday that a senior embryologist noticed the nitrogen level in one tank was very low during a routine check of the tanks on March 4. The embryologist, he said, “immediately rectified” the problem by refilling the tank. The embryos were later transferred to a new tank.

Dr. Kevin Doody, lab director at the Center for Assisted Reproduction in Texas and past president of the Society for Assisted Reproductive Technology, told The Associated Press that the nearly simultaneous storage failures are “beyond stunning” but appear to be “just a bad, bad, bad coincidence.”

The Washington Post reported that the services of fertility clinics — and therefore egg- and embryo-freezing — have become increasingly popular in the U.S.

The number of egg-freezing patients jumped from 475 in 2009 to 7,518 in 2015, the most recent year for which figures are available from the Society for Assisted Reproductive Technology. In total, about 20,000 American women have had their eggs preserved.

According to the clinic’s website, its fees for egg freezing are $8,345 for the initial cycle and $6,995 for each subsequent round. Herbert said, for patients still eager to use their eggs or embryos to try to become pregnant, the physicians and other staff will first thaw them to find out whether they are viable. If they are not, he said, “we are going to make our patients happy one way or another.

”

Meanwhile, a Pennsylvania couple and an Ohio couple that lost embryos have filed a class action lawsuit against the Cleveland hospital where officials estimate about 2,000 frozen eggs and embryos may have been damaged.

As for risk management of such facilities, Doody noted that the industry in the long run will end up being safer because there will be investigations and other facilities will examine their own backup measures and alarm systems.