|
Singapore LifeSaving Society
|
News
"Shallow water blackouts"
In response to recent queries from The Straits Times and Today newspapers in early September 2008 about "shallow water blackouts", the President, Richard Tan Ming Kirk, gave some comments including the following:
1. Shallow water blackout usually involves the loss of consciousness after someone has been holding his breath or has been hyperventilating (i.e. over breathing). Both strong and weak swimmers may be affected by shallow water blackouts. Strong swimmers or breath-hold free divers (i.e. skin divers) who hyperventilate in order to extend their underwater or bottom time are particularly at risk. However, weak swimmers may also hyperventilate because they are anxious and therefore put themselves at risk. Hyperventilation increases the amount of oxygen in the body while at the same time reducing the amount of carbon dioxide. Rising carbon dioxide levels in the body actually help to trigger the urge to breathe. Therefore, depleting the body's carbon dioxide levels increases the likelihood of shallow water blackouts. This is because the lack of an urge to breathe can result in the deprivation of oxygen going to the brain and cause unconsciousness. It may be difficult for the victim to realise that he is going to experience a shallow water blackout since this often happens suddenly. However, it has been said that some victims experience dizziness and a loss of vision shortly before it happens.
3.
We would advise people to take the following precautions -
"Life saving society's note of
caution" Letter from Honorary Secretary-General, Tan Lii Chong, an edited copy of which was published in the Straits Times Interactive ST Online Forum, 8 July 2008 I REFER to reports on the recent drowning at Raffles Marina. The Singapore Life Saving Society (SLSS) strongly believes that every drowning is one too many. On this note, the SLSS sends its heartfelt condolences to the bereaved family of the late Mr Levin Agsana, the latest victim of drowning in Singapore waters. The SLSS also echoes the views of Mr Teo Ser Luck and Dr Teo Ho Pin who have commented on this incident. Although the SLSS cannot comment on whether putting on a life jacket will hinder performance, or worse, make it more dangerous for the athlete to pursue a particular aquatic sport, the reality is that, unless one puts on a life jacket, it is quite certain that anticipated dangers will make themselves present mercilessly, as this latest case has shown. As the saying goes, no one plans to fail, but some fail to plan. In any aquatic emergency, the individual in distress will normally have only split seconds to decide the next course of action in order to survive. Therefore, any prior relevant training - such as basic swimming competence, swimming with and without life jacket, and drill in case of capsize - will certainly put the individual in a better position to focus on his next course of action if there is no imminent danger that he will be unable to breathe. Furthermore, it cannot be anticipated that no other injury will occur. For example, the victim may become unconscious or semi-conscious should there be any impact to the head, or other severe injuries may impede body movement. In such cases, wearing a life jacket may be the best survival kit an individual who finds himself in aquatic distress can rely on. Having provided these examples, the SLSS is in no position to suggest that no aquatic tragedy will ever occur so long as one always wears a life jacket in the water. The main purpose of this letter is to caution readers that, when engaging in any activity in the water, one should never underestimate the dangers of water and one should follow all necessary water-safety measures. We welcome members of the public who seek necessary water-safety advice from the SLSS office. Telephone 6299-3660 or e-mail slss@pacific.net.sg.
Tan Lii Chong "Articles by courtesy of SPH - The Straits Times"
"Safer to try reach or throw rescue in
drowning cases"
Both trained rescuers and lay persons have been
known to become victims in the course of attempting to rescue others. This may
be due to a lack of the necessary skills, fitness or equipment. It may also be
due to a misjudgment of the conditions present. Therefore, it is always better
to prevent the occurrence of a drowning situation than to attempt a rescue.
However, in the unfortunate case where there is a
need to rescue someone, the paramount consideration should always be the
lifesaverĒs own safety and rescues that can be performed without entering the
water are safer. For example, a reach (with a pole) or throw (with a rope)
rescue should always be considered first. Only when such techniques are not
likely to work should the rescuer consider entering the water. Even then, he
should enter the water as far as possible with rescue aids like life buoys or
swim floats. These may then be passed to the victim to keep him buoyant and
reduce the need to make contact. The reason for avoiding contact is that a
person in difficulties in the water is likely to grab at anything that floats
and that includes the rescuer. Hence, in our lifesaving courses, we teach
defensive techniques to prevent a victim from grabbing a rescuer who is
attempting a rescue. We also teach escape techniques to enable a rescuer to
escape from any unexpected grasp. "Articles by courtesy of SPH - The Straits Times"
"Deploy lifeguards at swimming pools to prevent accidents"
Letter from Honorary Secretary-General, Richard Tan Ming Kirk, an edited copy of which was published in the Straits Times Interactive ST Online Forum, 13 December 2006
We refer to your reports (ST, Dec 2
and ST, Dec 8) on the two young boys who died in
separate drowning incidents. It is pertinent to note
that they drowned despite a grandparent keeping an
eye in one case and a parent doing the same in the
other. Sadly, the cases highlight the risks of swimming
in places without lifeguards.
Lay persons are not trained to recognise persons in
distress in water. In fact, many people assume that a
drowning person will shout and wave for help. However,
drowning is often a silent killer. It has been said that
the reason why drowning victims are unable to shout
is because the respiratory system was designed for
breathing and speech is a secondary function. It
has been observed that drowning victims do not
have enough time to exhale and inhale and still call for
help in the limited time they struggle to keep
above the water.
Many people also do not realise how short
a time drowning persons can struggle to keep their heads
above the the water before they are overwhelmed. One
study found that they can only struggle to keep their
heads above the water for 20 to 60 seconds. This results
in a very short time before they disappear under the
water. For this reason, one lifeguard organisation
has recommended a 10 seconds scanning rule i.e. a
lifeguard should scan his entire zone every 10
seconds or risk not spotting a drowning victim. Few lay
persons know this or are as vigilant.
They also do not know what to do in a drowning incident.
In fact, there are cases of rescuers becoming victims
themselves. Lifeguards would know how to minimise the
risks when effecting a rescue. They also
know resuscitation techniques and how to
provide emergency care.
For these and other reasons, we have always urged the
authorities and pool owners to have lifeguards whenever
pools and other aquatic facilities are open for use. We
also encourage everyone to learn water survival and
lifesaving skills and schools to teach these skills.
Our non-profit organisation is dedicated to promoting
water safety and lifesaving and will be happy to assist
with information on water safety, lifesaving, lifeguard
training and other drowning prevention matters. For more
information, please contact our Manager by
calling 6299-3660, faxing 6299-0693 or emailing slss@pacific.net.sg
Richard Tan Ming Kirk
Honorary Secretary-General
Singapore Life Saving Society
"Articles by courtesy of SPH - The Straits Times"
"Treat all bodies of water as potential hazards" Letter from Honorary Secretary-General, Richard Tan Ming Kirk, an edited copy of which was published in the Straits Times Interactive ST Online Forum, 8 September 2006 The report, "Worker drowns after cart rolls into golf course pond" (ST; Sep 2, 2006) highlights the danger of falling into a pond. While deep water is normally more risky than shallow water, the Singapore Life Saving Society considers every body or container of water a potential hazard. Drownings have been known to occur in water of as little as five centimetres in depth. Owners, occupiers and managers of properties where bodies of water are found should therefore try to control or restrict access to them as well as take appropriate preventive measures. In addition, they should also consider providing adequate warning and making rescue equipment easily available. The fact that these waters are not normally intended for swimming may lead people to mistakenly think that drownings are unlikely to occur there. However, our records reveal that drownings do occur in many places that are not intended for swimming e.g. reservoirs, rivers and even drains. Experience from more developed countries have shown that relatively simple changes made to the environment in and around waters can help reduce the incidence of drowning. Therefore, we would urge everyone concerned to treat all bodies of water as potential hazards and to take the necessary steps to address them. Some of the measures that have been recommended in other countries include the following: Fencing Fencing is a useful method of restricting access to water and pool fencing has been especially effective in reducing the incidence of drowning in young children in Australia. It creates a physical barrier that is not easily breached and helps to prevent most accidental entries into the water.
Planting The planting of aquatic vegetation and vegetation in and beside bodies of water has been recommended in the United Kingdom as a possible protection that may also be aesthetic at the same time.
Grading Providing for a gentle gradient above and below the water line is helpful in reducing the risks of drowning. This is because there is research to show that many people who drown do so in water that is near their own standing depth. If there is a gentle underwater gradient from the water edge, the chances of a person being able to stand with their head above the water and thus avoiding drowning is much higher. Another point that has been highlighted by your report was that the man who drowned could not swim. The relationship between the ability to swim and the risk of drowning is still not proven because few studies have been done in this area and ethical reasons have also prevented the duplication of realistic drowning scenarios. However, not many people would argue that under similar conditions, someone who cannot swim is less likely to drown than someone who can. While acknowledging the lack of research in this area, experts at the World Congress of Drowning 2002 nonetheless recommended that all individuals should learn to swim because it is a major skill to prevent drowning. We would also make the same recommendation. The Singapore Life Saving Society is a non-profit organisation dedicated to promoting water safety and lifesaving and we will be happy to assist interested persons with more information. They may call our manager or senior executive at 6299-3660, fax them at 6299-0693 or email them at slss@pacific.net.sg RICHARD TAN MING KIRK "Articles by courtesy of SPH - The Straits Times"
"Lower Seletar Reservoir & Hillington Green Condominium Drowning Incidents" Letter from Honorary Secretary General, Richard Tan Ming Kirk, published in the Straits Times, 1 July 2005 Re.: Lower Seletar Reservoir & Hillington Green Condominium Drowning
Incidents RICHARD TAN MING KIRK "Articles by courtesy of SPH - The Straits Times"
"Take extra care when swimming in sea"
Re.: Take extra care when swimming in sea
RICHARD TAN MING KIRK "Articles by courtesy of SPH - The Straits Times"
"What the public can do to prevent drownings"
The Singapore Life Saving Society (SLSS) is saddened to learn that two more young
lives were lost last Sunday ("Double drownings: Boy, 4, in country club; girl,
4, in condo"; ST March 16).
RICHARD TAN MING KIRK "Articles by courtesy of SPH - The Straits Times" |
|
SLSS is a National Member of the Royal Life Saving Society Commonwealth and International Life Saving Federation. |