Cellphone Calls During Blood Pressure Readings May Skew Results

Interruption can cause spike in systolic pressure, study found

By Alan Mozes

HealthDay Reporter

WEDNESDAY, May 15 (HealthDay News) -- New Italian research offers some cautionary advice for patients with high blood pressure: The next time you take a blood pressure reading, turn off your cellphone.

The reason: Answering a cellphone call during a reading may cause a temporary but significant spike in blood pressure, rendering the results inaccurate and misleading.

"The cellular phone has burst into our everyday life, and is often an indispensable communication tool for business and social relations," said study author Dr. Giuseppe Crippa, head of the hypertension unit at Guglielmo da Saliceto Hospital in Piacenza, Italy. "[Now] we know that the radio-frequency field generated by mobile phones does not affect blood pressure, and should not increase blood pressure in subjects suffering from hypertension.

"But what is the effect of the noise generated by the phone ringing and of the intrusion into our life of an unscheduled phone conversation?" Crippa asked. "In our study, we have shown that blood pressure, particularly systolic blood pressure, increases quickly and significantly in this situation."

The study authors said one in three Americans (and 1 billion people worldwide) currently struggles with high blood pressure.

Those grappling with keeping their high blood pressure under control often are instructed to either come in for routine readings taken by a health care professional, or to use one of many at-home monitoring kits that give patients the option of taking their own readings on a regular basis.

To explore the question of how cellphones might affect such readings, the authors focused on 49 Italian women with an average age of 53, all of whom were taking medication to control high blood pressure.

After discussing their general cellphone usage habits, all underwent two sets of multiple blood pressure readings, each set registering six readings at one-minute intervals. All the readings took place in a physician's office, where patients were left alone (in what the researchers described as a "comfortable" setting) after the first reading.

During one of the two readings, an investigator disabled caller ID and anonymously called each patient's cellphone three times, with a patient's response to at least one of the calls being deemed sufficient for testing purposes.

The result: By comparing readings taken with and without incoming calls, the team found that patients' systolic numbers (the top figure in a blood pressure reading, indicating blood pressure as the heart contracts) went up "significantly" whenever the patients answered their phones.

Patients who had indicated relatively heavy routine cellphone usage (30 or more calls per day), however, experienced a less steep rise in their systolic numbers during incoming calls. Since heavy users tended to be younger, the team theorized that a greater cellphone comfort level among younger patients may protect them from the cellphone dynamic.

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Cellphone Use May Reveal Your 'Dominant Brain'

People with left-brain dominance tend to listen with right ear, and vice-versa, study finds

By Alan Mozes

HealthDay Reporter

FRIDAY, May 17 (HealthDay News) -- New research suggests the dominant side of your brain may make the call on which ear you choose to use while talking on your cellphone.

The dominant side of your brain is where your speech and language center resides. Ninety-five percent of the human population is left-brain dominant, and those people tend to be right-handed. The opposite holds true for people who are right-brain dominant. In this study, scientists found that roughly 70 percent of those surveyed held their cellphone up to the ear that was on the same side as their dominant hand.

This insight into the way people use their cellphones could one day help doctors quickly and safely locate and protect a patient's language center before beginning a potentially risky brain operation, the researchers said.

"In essence, this could be used as a poor man's Wada test," said study author Dr. Michael Seidman, director of the division of otologic/neurotologic surgery at the Henry Ford Health System in West Bloomfield, Mich. "[The Wada test] is the standard test used today to determine exactly where a surgical patient's language center is located, which is critical information to have if you want to carefully preserve a person's language abilities.

"The Wada test is, however, invasive and risky," Seidman said. "But by looking at how a person uses their cellphone, which side they listen in to, you can get shorthand insight into brain dominance. It's not a foolproof guarantee, but I would say it's a pretty reliable and safe way of going about it."

Seidman and his colleagues reported their findings in the May issue of the journal JAMA Otolaryngology -- Head & Neck Surgery.

To explore how brain dominance may relate to cellphone handling, the authors sifted through more than 700 online surveys completed by people who were members of a web-based otology (hearing) discussion group, as well as those already undergoing Wada and MRI testing for various purposes.

Respondents were asked to give information regarding their cellphone habits, favored hand for executing various tasks (such as writing, throwing and cellphone handling) and any hearing-loss issues. Any history of brain, head or neck tumors also was noted.

Ninety percent of those polled were right-handed, and 68 percent used their right ear, 25 percent used their left ear and 7 percent used both ears.

The story was similar among the left-handed people: 72 percent used their left ear, 23 percent used their right ear and 5 percent used both ears.

The team concluded that there is an association between cellphone handling habits and brain dominance, with right-ear cellphone use typically indicating left-brain dominance, and vice versa.

"We're pretty confident in our results," Seidman said. "Basically, if your speech and language centers are in the left side of the brain -- which for most people they are -- a cellphone conversation is going to sound better in your right ear."

View the original article here

Cellphone Calls During Blood Pressure Readings May Skew Results

By Alan Mozes
HealthDay Reporter

WEDNESDAY, May 15 (HealthDay News) -- New Italian research offers some cautionary advice for patients with high blood pressure: The next time you take a blood pressure reading, turn off your cellphone.

The reason: Answering a cellphone call during a reading may cause a temporary but significant spike in blood pressure, rendering the results inaccurate and misleading.

"The cellular phone has burst into our everyday life, and is often an indispensable communication tool for business and social relations," said study author Dr. Giuseppe Crippa, head of the hypertension unit at Guglielmo da Saliceto Hospital in Piacenza, Italy. "[Now] we know that the radio-frequency field generated by mobile phones does not affect blood pressure, and should not increase blood pressure in subjects suffering from hypertension.

"But what is the effect of the noise generated by the phone ringing and of the intrusion into our life of an unscheduled phone conversation?" Crippa asked. "In our study, we have shown that blood pressure, particularly systolic blood pressure, increases quickly and significantly in this situation."

The study authors said one in three Americans (and 1 billion people worldwide) currently struggles with high blood pressure.

Those grappling with keeping their high blood pressure under control often are instructed to either come in for routine readings taken by a health care professional, or to use one of many at-home monitoring kits that give patients the option of taking their own readings on a regular basis.

To explore the question of how cellphones might affect such readings, the authors focused on 49 Italian women with an average age of 53, all of whom were taking medication to control high blood pressure.

After discussing their general cellphone usage habits, all underwent two sets of multiple blood pressure readings, each set registering six readings at one-minute intervals. All the readings took place in a physician's office, where patients were left alone (in what the researchers described as a "comfortable" setting) after the first reading.

During one of the two readings, an investigator disabled caller ID and anonymously called each patient's cellphone three times, with a patient's response to at least one of the calls being deemed sufficient for testing purposes.

The result: By comparing readings taken with and without incoming calls, the team found that patients' systolic numbers (the top figure in a blood pressure reading, indicating blood pressure as the heart contracts) went up "significantly" whenever the patients answered their phones.

Patients who had indicated relatively heavy routine cellphone usage (30 or more calls per day), however, experienced a less steep rise in their systolic numbers during incoming calls. Since heavy users tended to be younger, the team theorized that a greater cellphone comfort level among younger patients may protect them from the cellphone dynamic.

Incoming calls had no impact on patients' diastolic numbers (the bottom figure in a reading, indicating blood pressure while the heart is at rest), nor did patients' overall heart rates shift when the cellphone rang.

The team concluded that patients should be advised to turn off their cellphones whenever and wherever they have a blood pressure reading, to ensure accuracy.

"It is noteworthy that the great majority of the patients recruited for this survey were not used to turning off the mobile phone, even during a medical examination, and easily answered the calls even when an automated device was measuring blood pressure," Crippa said.

"Therefore, we believe that it is important to advise patients that the unnecessary and exaggerated use of cellphones can increase, at least temporarily, their blood pressure," he said.

Dr. Gary Schwartz, a professor of medicine at the Mayo Clinic College of Medicine in Rochester, Minn., said the issue is not the disturbance of a cellphone call, but rather any disturbance in general.

"I wouldn't look at this study and say cellphones are bad for you," Schwartz said. "But American Heart Association standards call for the need to be quiet, whether you're getting your blood pressure measured at a doctor's office or at home.

"Just engaging in conversation, whether or not it's on the phone, can raise the numbers and give an inaccurate reading," he said. "It's the same principle behind why we don't measure a person's blood pressure while they're playing tennis. What we want is for patients to be quiet and at rest."

Crippa and his colleagues are scheduled to present their findings Wednesday at the American Society of Hypertension annual meeting in San Francisco. Research presented at medical meetings should be viewed as preliminary until published in a peer-reviewed journal.

Copyright © 2013 HealthDay. All rights reserved. SOURCES: Giuseppe Crippa, M.D., head, hypertension unit, Guglielmo da Saliceto Hospital, Piacenza, Italy; Gary Schwartz, M.D., professor, medicine, Mayo Clinic College of Medicine, Rochester, Minn.; May 15, 2013, presentation, American Society of Hypertension annual meeting, San Francisco

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Fatal Crashes Involving Cellphone Use May Be Under-Reported

THURSDAY, May 9 (HealthDay News) -- The number of fatal crashes involving drivers distracted by cellphones is vastly under-reported in the United States, according to a new study.

National Safety Council researchers looked at 180 fatal crashes nationwide from 2009 to 2011 where evidence indicated driver cellphone use. Of the crashes in 2011, only 52 percent were labeled as cellphone-related in federal government data.

"We believe the number of crashes involving cellphone use is much greater than what is being reported," Janet Froetscher, president and CEO of the National Safety Council, said in a council news release. "Many factors -- from drivers not admitting cellphone use, to a lack of consistency in crash reports being used to collect data at the scene -- make it very challenging to determine an accurate number."

Even in cases where drivers admitted cellphone use before a fatal crash, only about half were entered as cellphone-related in the U.S. National Highway Traffic Safety Administration's Fatal Analysis Reporting System.

The study also noted that there are an unknown number of cases in which the use of cellphones in fatal crashes is impossible to determine. An example would be a driver reading an email or text message who dies in a crash without any witnesses.

There were large differences in cellphone-related fatal crashes reported by states. For example, Tennessee reported 93 fatal crashes involving cellphone use in 2011 while New York reported only one, despite its much larger population. In the same year, Texas reported 40 such cases, while neighboring Louisiana reported none.

In 2012, U.S. traffic deaths increased for the first time in seven years. Based on available data, the National Safety Council estimates that 25 percent of all crashes involved cellphone use.

"The public should be aware that cellphone-involved fatal crashes are not accurately being reported," Bill Windsor, associate vice president of consumer safety at Nationwide Mutual Insurance Company, said in the news release. The company partly funded the study.

"These statistics influence national prevention priorities, funding decisions, media attention, legislation and policy, even vehicle and roadway engineering. There are wide-ranging, negative ramifications to safety if a fatal crash factor is substantially under-reported, as appears to be the case of cellphone use in crashes," Windsor said.

-- Robert Preidt
Copyright © 2013 HealthDay. All rights reserved. SOURCE: National Safety Council, news release, May 7, 2013

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Cellphone 'Distracted Walking' Sending Pedestrians to the ER

Talking, texting users aren't looking out for dangers, study finds

By Randy Dotinga

HealthDay Reporter

TUESDAY, June 25 (HealthDay News) -- Pedestrians are becoming more likely to be injured while using their cellphones and an estimated 1,500 were treated in U.S. emergency rooms in 2010 as a result, a new study finds.

It's impossible to know how many of the injuries could have been avoided if pedestrians weren't using their cellphones. The study also doesn't determine whether the injuries are on the rise simply because more people are using cellphones.

Whatever the case, study author Jack Nasar said the findings show that cellphone use isn't just a danger to drivers. It's also a hazard to those who are only strolling.

"Stop walking when you're going to take a cellphone call or text. Don't do two things at once," advised Nasar, a professor of city and regional planning at Ohio State University who studies cellphones and distraction.

Nasar and colleagues previously reported that pedestrians on public streets are more likely to have close calls with cars if they are using their cellphones. In the new study, the researchers sought to understand the risk on a national level by examining a federal database of emergency room visits from 2004 to 2010.

The investigators found that the estimated number of pedestrian injuries linked to cellphones -- including those that had nothing to do with cars, such as walking into something -- varied from as low as 256 to as high as 597 between 2004 and 2007. The numbers then jumped to 1,055 in 2008, 1,113 in 2009 and 1,506 in 2010.

Deaths are not included in the study. It also doesn't break out injuries by seriousness; some injuries were minor.

The study gives details about some injuries that have been reported. In one case, a 21-year-old male suffered a sprained elbow and spinal sprain when he was hit by a car while on his phone. In another, a 28-year-old man walked into a pole and lacerated his brow. And a 14-year-old boy fell several feet off a bridge into a ditch, bruising his chest.

People under 31 were among those most likely to be hurt while walking and using a cellphone, with those aged 21 to 25 sustaining the most injuries, followed by 16- to 20-year-olds. Men were slightly more likely (53 percent) than women to be pedestrian victims.

The estimated numbers of injuries to pedestrians on cellphones were roughly equal to those of drivers who were on cellphones. Even at the height in 2010, however, the estimated injuries accounted for fewer than 4 percent of all estimated injuries to pedestrians.

Nasar said the estimates in the study may greatly underestimate the risk of cellphone use to pedestrians.

John Lee, a professor with the department of industrial and systems engineering at the University of Wisconsin-Madison who studies distracted driving, said the new research has weaknesses. "It could be that cellphones are associated with a greater number of injuries simply because it is more likely that people are using a phone at the time," he said, "and it is hard to know if cellphone use actually causes these mishaps or is even associated with them."

View the original article here

Cellphone Use May Reveal Your 'Dominant Brain'

People with left-brain dominance tend to listen with right ear, and vice-versa, study finds

By Alan Mozes

HealthDay Reporter

FRIDAY, May 17 (HealthDay News) -- New research suggests the dominant side of your brain may make the call on which ear you choose to use while talking on your cellphone.

The dominant side of your brain is where your speech and language center resides. Ninety-five percent of the human population is left-brain dominant, and those people tend to be right-handed. The opposite holds true for people who are right-brain dominant. In this study, scientists found that roughly 70 percent of those surveyed held their cellphone up to the ear that was on the same side as their dominant hand.

This insight into the way people use their cellphones could one day help doctors quickly and safely locate and protect a patient's language center before beginning a potentially risky brain operation, the researchers said.

"In essence, this could be used as a poor man's Wada test," said study author Dr. Michael Seidman, director of the division of otologic/neurotologic surgery at the Henry Ford Health System in West Bloomfield, Mich. "[The Wada test] is the standard test used today to determine exactly where a surgical patient's language center is located, which is critical information to have if you want to carefully preserve a person's language abilities.

"The Wada test is, however, invasive and risky," Seidman said. "But by looking at how a person uses their cellphone, which side they listen in to, you can get shorthand insight into brain dominance. It's not a foolproof guarantee, but I would say it's a pretty reliable and safe way of going about it."

Seidman and his colleagues reported their findings in the May issue of the journal JAMA Otolaryngology -- Head & Neck Surgery.

To explore how brain dominance may relate to cellphone handling, the authors sifted through more than 700 online surveys completed by people who were members of a web-based otology (hearing) discussion group, as well as those already undergoing Wada and MRI testing for various purposes.

Respondents were asked to give information regarding their cellphone habits, favored hand for executing various tasks (such as writing, throwing and cellphone handling) and any hearing-loss issues. Any history of brain, head or neck tumors also was noted.

Ninety percent of those polled were right-handed, and 68 percent used their right ear, 25 percent used their left ear and 7 percent used both ears.

The story was similar among the left-handed people: 72 percent used their left ear, 23 percent used their right ear and 5 percent used both ears.

The team concluded that there is an association between cellphone handling habits and brain dominance, with right-ear cellphone use typically indicating left-brain dominance, and vice versa.

"We're pretty confident in our results," Seidman said. "Basically, if your speech and language centers are in the left side of the brain -- which for most people they are -- a cellphone conversation is going to sound better in your right ear."

View the original article here

Cellphone Calls During Blood Pressure Readings May Skew Results

Interruption can cause spike in systolic pressure, study found

By Alan Mozes

HealthDay Reporter

WEDNESDAY, May 15 (HealthDay News) -- New Italian research offers some cautionary advice for patients with high blood pressure: The next time you take a blood pressure reading, turn off your cellphone.

The reason: Answering a cellphone call during a reading may cause a temporary but significant spike in blood pressure, rendering the results inaccurate and misleading.

"The cellular phone has burst into our everyday life, and is often an indispensable communication tool for business and social relations," said study author Dr. Giuseppe Crippa, head of the hypertension unit at Guglielmo da Saliceto Hospital in Piacenza, Italy. "[Now] we know that the radio-frequency field generated by mobile phones does not affect blood pressure, and should not increase blood pressure in subjects suffering from hypertension.

"But what is the effect of the noise generated by the phone ringing and of the intrusion into our life of an unscheduled phone conversation?" Crippa asked. "In our study, we have shown that blood pressure, particularly systolic blood pressure, increases quickly and significantly in this situation."

The study authors said one in three Americans (and 1 billion people worldwide) currently struggles with high blood pressure.

Those grappling with keeping their high blood pressure under control often are instructed to either come in for routine readings taken by a health care professional, or to use one of many at-home monitoring kits that give patients the option of taking their own readings on a regular basis.

To explore the question of how cellphones might affect such readings, the authors focused on 49 Italian women with an average age of 53, all of whom were taking medication to control high blood pressure.

After discussing their general cellphone usage habits, all underwent two sets of multiple blood pressure readings, each set registering six readings at one-minute intervals. All the readings took place in a physician's office, where patients were left alone (in what the researchers described as a "comfortable" setting) after the first reading.

During one of the two readings, an investigator disabled caller ID and anonymously called each patient's cellphone three times, with a patient's response to at least one of the calls being deemed sufficient for testing purposes.

The result: By comparing readings taken with and without incoming calls, the team found that patients' systolic numbers (the top figure in a blood pressure reading, indicating blood pressure as the heart contracts) went up "significantly" whenever the patients answered their phones.

Patients who had indicated relatively heavy routine cellphone usage (30 or more calls per day), however, experienced a less steep rise in their systolic numbers during incoming calls. Since heavy users tended to be younger, the team theorized that a greater cellphone comfort level among younger patients may protect them from the cellphone dynamic.

View the original article here

Hate Other People's Cellphone Calls? You're Not Alone

Study found working people were more distracted by one-sided versus two-sided conversations

By Alan Mozes

HealthDay Reporter

WEDNESDAY, March 13 (HealthDay News) -- Adding to the list of "really annoying things," new research is pointing the finger at a technology that can turn public spaces into private misery for many: cellphones.

The study suggests that cellphone calls, and the half-conversations listeners are forced to overhear, are a much more distracting form of background noise than an in-person exchange between two people.

"I find cell phones annoying, frankly, and there's lots of research suggesting that many people agree -- so I wanted to study this," said study lead author Veronica Galvan, an assistant professor in the department of psychological sciences with the College of Arts and Sciences at the University of San Diego.

"What we found," Galvan said, "was that there does seem to be something unique about a one-sided cell conversation that makes it more distracting for people to overhear than a two-way conversation."

Galvan and her colleagues published their findings in the March 13 issue of the journal PLoS ONE.

According to the authors, in 2012 wireless device users worldwide devoted more than 2.3 trillion minutes to cellphone calls, texting, listening to music and Web surfing. Many of the calls are being placed in public spaces such as restaurants, elevators or on public transport.

Last year, a study conducted by researchers at Cornell University asked college students to try to ignore sound recordings while trying to complete a task. Their conclusion: Recordings of one-sided cell phone conversations were actually more distracting, irritating and taxing to the brain than two-sided in-person conversations.

The newer study builds on that work, using a real-world study design. This time, Galvan's team had nearly 150 undergraduate students complete a word-play reading exercise.

There was a hitch, though: Participants were exposed to one of two types of live conversations, either an in-person exchange between two people or a one-sided cellphone call.

In both cases, the exchange was scripted to focus on the same range of topics, including shopping for furniture, details concerning a birthday party for Dad, or meeting up with a date in a shopping mall.

Conversations were similar in length and were overheard by the participants just once, as they struggled to compete the word task. When the conversations ceased, the students were asked to complete memory recall tests, as well as distraction questionnaires.

While all the participants fared comparably well on the tasks, one-sided cellphone conversations were deemed to be "significantly" more distracting than two-sided conversations. Attention seemed to stray more to the one-sided calls, since people who had overheard a one-sided cellphone conversation were more able to recall what had been said versus those who had overheard a two-party exchange.

According to the researchers, people appear to be less able to tune out cellphone conversations compared to two-person exchanges. This supports notions that overheard cellphone jabber might negatively affect a person's ability to concentrate and focus, they said.

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Can Excessive Cellphone Use Become an Addiction?

Title: Can Excessive Cellphone Use Become an Addiction?
Category: Health News
Created: 12/4/2012 2:36:00 PM
Last Editorial Review: 12/5/2012 12:00:00 AM

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