Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New surgical tool may help sleep apnea sufferers, Wayne State research finds

28.08.2013
A Wayne State University researcher's innovative use of a new tool may make surgery a more viable option for sufferers of obstructive sleep apnea/hypopnea syndrome (OSAHS).

Ho-Sheng Lin, M.D., a fellow with the American College of Surgeons and professor of otolaryngology-head and neck surgery in the School of Medicine and Karmanos Cancer Institute, reported promising results in the July issue of The Laryngoscope, for treating sleep apnea using transoral robotic surgery (TORS), a technique whose safety and tolerability have recently been established for removing cancerous tumors in the back of the throat.

Patients with OSAHS typically are treated with positive airway pressure (PAP), which is extremely safe and often effective. However, not all OSAHS patients can tolerate PAP, which involves wearing a mask during sleep that forces the airway open so they can continue breathing without interruption.

For patients who cannot tolerate PAP, surgery may be a viable alternative. A common procedure, uvulopalatopharyngoplasty (UPPP), targets the obstruction at the level of the soft palate, but has only been found to be effective in less than 50 percent of cases.

Lin, who also is chief of the otolaryngology section in the surgery department at the John D. Dingell VA Medical Center, said the less-than-optimal result from UPPP is not surprising. In patients with OSAHS, obstruction of air flow can occur at multiple levels of the throat; UPPP only addresses blockage at the soft palate level.

"In order to be maximally effective, the surgeon must evaluate each patient individually to identify the exact site or sites of airway obstruction and then direct the surgical treatments to address those obstructions," Lin said.

Obstruction at the back of the tongue (BOT) can play a significant role in sleep apnea. Traditionally, surgical treatment of BOT blockage has been challenging because it's hard for doctors to see and operate in that region.

Using a robotic device called the da Vinci Surgical System, Lin can now gain improved access to the BOT region to safely and precisely remove the excessive tissue causing airway obstruction. In this study, he reported on the outcome of 12 patients — nine women and three men — who underwent BOT resection via TORS. They were selected for analysis because they underwent removal of excessive BOT tissue and nothing else.

Two prior studies, one from Europe and another from the United States, also looked at treatment outcome following TORS-assisted BOT surgery in sleep apnea patients. However, in those studies, the BOT surgery was done in conjunction with other upper-airway surgeries, making it difficult to assess the effectiveness of the BOT procedure alone. Because all patients in Lin's study underwent only BOT surgery, it is the first to look at the effectiveness of only the TORS-assisted BOT resection.

"Despite undergoing only the BOT procedure, our patients' surgical outcomes appeared similar to those who underwent BOT in addition to other upper-airway surgeries," Lin said.

Significant improvements were seen in the apnea-hypopnea index (AHI) of 75 percent of patients. AHI assesses the severity of sleep apnea based on the total number of complete cessations (apnea) and partial obstructions (hypopnea) of breathing occurring per hour of sleep. Even the other 25 percent saw improvements in their condition, Lin said, with some now better able to tolerate PAP treatments.

Although his study results appear promising, Lin said because of the unique nature of each OSAHS sufferer, as well as his necessarily small sample size, more work is needed with larger groups in order to further assess the efficacy of TORS-assisted BOT, with an eye toward developing standardized criteria as to which patients would benefit from it most.

"The procedure we have focused on is not a cure-all, and its use is still in its infancy," Lin said. "But surgeons now have a new, safe and precise technique to add to their OSAHS treatment options."

Wayne State University is one of the nation's pre-eminent public research institutions in an urban setting. Through its multidisciplinary approach to research and education, and its ongoing collaboration with government, industry and other institutions, the university seeks to enhance economic growth and improve the quality of life in the city of Detroit, state of Michigan and throughout the world. For more information about research at Wayne State University, visit http://www.research.wayne.edu.

Julie O'Connor | EurekAlert!
Further information:
http://www.wayne.edu

More articles from Medical Engineering:

nachricht Wireless power can drive tiny electronic devices in the GI tract
28.04.2017 | Brigham and Women's Hospital

nachricht Artificial intelligence may help diagnose tuberculosis in remote areas
25.04.2017 | Radiological Society of North America

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>