News | Cardiac Imaging | January 05, 2017

Cardiac MRI Shows Short-Term Sleep Deprivation Affects Heart Function

Study reveals ill effects of 24-hour work shifts

short-term sleep deprivation, heart function, cardiac magnetic resonance, CMR, RSNA 2016

January 5, 2017 — Too little sleep takes a toll on your heart, according to a new study presented at the 2016 annual meeting of the Radiological Society of North America (RSNA), Nov. 27-Dec. 1 in Chicago.

People who work in fire and emergency medical services, medical residencies and other high-stress jobs are often called upon to work 24-hour shifts with little opportunity for sleep. While it is known that extreme fatigue can affect many physical, cognitive and emotional processes, this is the first study to examine how working a 24-hour shift specifically affects cardiac function.

"For the first time, we have shown that short-term sleep deprivation in the context of 24-hour shifts can lead to a significant increase in cardiac contractility, blood pressure and heart rate," said study author Daniel Kuetting, M.D., from the Department of Diagnostic and Interventional Radiology at the University of Bonn in Bonn, Germany.

For the study, Kuetting and colleagues recruited 20 healthy radiologists, including 19 men and one woman, with a mean age of 31.6 years. Each of the study participants underwent cardiovascular magnetic resonance (CMR) imaging with strain analysis before and after a 24-hour shift with an average of three hours of sleep.

"Cardiac function in the context of sleep deprivation has not previously been investigated with CMR strain analysis, the most sensitive parameter of cardiac contractility," Kuetting said.

The researchers also collected blood and urine samples from the participants and measured blood pressure and heart rate.

Following short-term sleep deprivation, the participants showed significant increases in mean peak systolic strain (pre = -21.9; post = -23.4), systolic (112.8; 118.5) and diastolic (62.9; 69.2) blood pressure and heart rate (63.0; 68.9). In addition, the participants had significant increases in levels of thyroid stimulating hormone (TSH), thyroid hormones FT3 and FT4, and cortisol, a hormone released by the body in response to stress.

Although the researchers were able to perform follow-up examinations on half of the participants after regular sleep, Kuetting noted that further study in a larger cohort is needed to determine possible long-term effects of sleep loss.

"The study was designed to investigate real-life work-related sleep deprivation," Kuetting said. "While the participants were not permitted to consume caffeine or food and beverages containing theobromine, such as chocolate, nuts or tea, we did not take into account factors like individual stress level or environmental stimuli."

As people continue to work longer hours or work at more than one job to make ends meet, it is critical to investigate the detrimental effects of too much work and not enough sleep. Kuetting believes the results of this pilot study are transferable to other professions in which long periods of uninterrupted labor are common.

"These findings may help us better understand how workload and shift duration affect public health," he said.

Co-authors on the study are Andreas Feisst, M.D., Rami Homsi, M.D., Julian A. Luetkens, M.D., Daniel Thomas, M.D., Ph.D., Hans H. Schild, M.D., and Darius Dabir, M.D.

For more information: www.rsna.org

Related Content

An image on Brigham and Women's Hospital's 7T MRI system

An image on Brigham and Women's Hospital's 7T MRI system. Image courtesy of Brigham and Women's Hospital

News | Magnetic Resonance Imaging (MRI) | November 13, 2019
November 13, 2019 — Increased immune system activity along the surface of the brain, or meningeal inflammation, may b
Radiographer Apollo Exconde with his Lego concept open MRI for patient education.

Radiographer Apollo Exconde with his Lego concept open MRI for patient education.

News | Patient Engagement | November 11, 2019
November 11, 2019 — Radiographer Apollo Exconde...
Image by Dr. Manuel González Reyes from Pixabay

Image by Dr. Manuel González Reyes from Pixabay 

News | SPECT Imaging | November 08, 2019
November 8, 2019 — Using ground-breaking technology, researchers at the...
This chest X-ray of a patient being treated for e-cigarette or vaping-associated lung injury shows lung opacities, densities and whitish cloud-like areas which are typically seen with unusual pneumonias, fluid in lungs or lung inflammation. Image courtesy of Intermountain Healthcare

This chest X-ray of a patient being treated for e-cigarette or vaping-associated lung injury shows lung opacities, densities and whitish cloud-like areas which are typically seen with unusual pneumonias, fluid in lungs or lung inflammation. Image courtesy of Intermountain Healthcare

News | Clinical Trials | November 08, 2019
November 8, 2019 — As the outbreak of lung injuries and deaths associated with e-cigarettes, or...
Unlike other technologies for imaging the placenta, pCASL MRI can distinguish maternal blood from fetal blood

Image courtesy of Pixabay

News | Clinical Trials | November 07, 2019
November 7, 2019 — A new imaging technique to track
The introduction of liquid helium free, high-end MRI systems by MR Solutions substantially reduces the environmental impact
News | Magnetic Resonance Imaging (MRI) | November 05, 2019
November 5, 2019 — Environmental impact is becoming a significant factor in the selection of suppliers even in precli
MRI control room at Centra DuPage Hospital
News | Magnetic Resonance Imaging (MRI) | November 04, 2019
November 4, 2019 — Traditional image-guided procedures remained restricted to the limitation of physicians referring
The Neuroreader software program quantifies brain volume in study participants with TBI

The Neuroreader software program quantifies brain volume in study participants with TBI. Image courtesy of UCLA Health.

News | Clinical Trials | October 29, 2019
October 29, 2019 — A UCLA-led...
An example of a semitruck trailer-based mobile MRI suite.

An example of a semitruck trailer-based mobile MRI suite, similar to the one involved in the accident.

Feature | Magnetic Resonance Imaging (MRI) | October 25, 2019 | Dave Fornell
A radiology nurse was seriously injured Oct. 23 at Sunderby Hospital in Luleå, located in northern Sweden, when caught...
The Konica Minolta Sonimage HS1 hand-carried system is designed for point of care ultrasound (POCUS) use for an immediate, quick look inside the patient. POCUS systems from several vendors are seeing rapid growth.

The Konica Minolta Sonimage HS1 hand-carried system is designed for point of care ultrasound (POCUS) use for an immediate, quick look inside the patient. POCUS systems from several vendors are seeing rapid growth.

Feature | Ultrasound Imaging | October 24, 2019 | Joan Toth
With the miniaturization of technology, improved ease of use, lower system cost, increased portability, and greater