Dr. El-Bayar studies the impact of surgical procedures and treatments on patients with conditions like liver disease, blocked arteries, and head and neck cancer. He has researched the use of a specialized device during liver surgery, examining its safety and effectiveness in minimizing complications. Additionally, he investigates how certain treatments, like angioplasty for blocked arteries or radiation for cancer, can lead to further health issues, such as artery blockages. His work helps inform both patients and doctors about the best treatment options and potential risks associated with these procedures.
Key findings
In a study on liver surgery with a four-prong radiofrequency device, 43% of patients experienced cancer recurrence after an average of 7 months.
Among patients who underwent angioplasty for blocked arteries, 33% experienced an initial failure, but 78% had open arteries functioning well after 2 years.
In a study of head and neck cancer patients, 75% received radiation, and severe narrowing of carotid arteries occurred in 3 patients, all of whom showed no symptoms.
Frequently asked questions
Does Dr. El-Bayar study liver surgery?
Yes, he studies surgical techniques related to liver surgery, particularly the use of specific medical devices.
What treatments has Dr. El-Bayar researched?
He has researched treatments like angioplasty for blocked arteries and radiation therapy for head and neck cancer patients.
Is Dr. El-Bayar's work relevant to patients with blocked arteries?
Yes, his research helps improve understanding and treatment options for patients with blocked arteries.
Does Dr. El-Bayar study the effects of radiation therapy?
Yes, he investigates how radiation therapy can lead to complications such as artery blockages in cancer patients.
Who benefits from Dr. El-Bayar's research?
Patients undergoing surgeries or treatments for liver disease, blocked arteries, and head and neck cancer benefit from his findings.
Publications in plain English
Liver resection using a four-prong radiofrequency transection device.
2009
The American surgeon
Wagman LD, Lee B, Castillo E, El-Bayar H, Lai L
Plain English This study looked at a medical device called the Habib 4X used during liver surgery to see how well it performs. Researchers analyzed 94 liver operations, finding that 43% of patients had their cancer come back after an average of about 7 months. The use of the Habib 4X resulted in a safe level of blood loss and transfusions during surgery, showing it is effective for liver resections.
Who this helps: Patients undergoing liver surgery.
Determinants of failure in superficial femoral artery angioplasty.
1992
Angiology
el-Bayar H, Roberts A, Hye R, Davis G, Freischlag J
Plain English This study looked at the outcomes of a procedure called angioplasty, which is used to open blocked superficial femoral arteries in patients. Out of 27 treated arteries in 22 patients, 33% had an initial failure of the procedure, and by the two-year mark, 78% of arteries were still open and functioning well. The researchers found that older age and the severity of artery blockage were linked to higher chances of failure, which helps understand who might need different treatment options.
Who this helps: This helps patients with blocked arteries and their doctors in making informed treatment decisions.
Carotid artery disease in patients with head and neck carcinoma.
1990
The American surgeon
Lopez M, el-Bayar H, Hye RJ, Freischlag J
Plain English This study looked at 179 patients who had surgery for head and neck cancer, some of whom received radiation treatment. Researchers found that 75% of these patients had radiation after their surgery, and among those who underwent follow-up, three had severe narrowing of the carotid arteries, all of whom had received radiation but showed no symptoms. This matters because it suggests that radiation treatment may lead to serious artery blockages in these patients, increasing their risk for strokes or other complications later on.
Who this helps: This helps patients who have undergone treatment for head and neck cancer as well as their doctors.
Alterations in gastric mucus secretion in rhesus monkeys after exposure to ionizing radiation.
1985
Gastroenterology
Shea-Donohue T, Danquechin-Dorval E, Montcalm E, El-Bayar H, Durakovic A +2 more
Plain English This study looked at how exposure to radiation affects the mucus produced in the stomachs of rhesus monkeys. Researchers found that after radiation exposure, levels of two types of mucus proteins increased but then one type was significantly reduced after drinking water. This matters because these changes in mucus could weaken the stomach's ability to protect itself, which may lead to further issues.
Who this helps: Patients undergoing radiation therapy may benefit from understanding how their stomach function might be affected.
The role of endogenous prostaglandins in the regulation of gastric secretion in rhesus monkeys.
1985
Prostaglandins
el-Bayar H, Steel L, Montcalm E, Danquechin-Dorval E, Dubois A +1 more
Plain English This study looked at how a substance called prostaglandins affects stomach fluid production in rhesus monkeys. Researchers found that when prostaglandin production was blocked for one to four days, there was a notable decrease in protective mucus and sodium levels in stomach fluid, while the acidity of the fluid increased. This matters because it shows that prostaglandins help regulate stomach secretion and protect the gastrointestinal system from damage.
Who this helps: This helps patients with gastrointestinal issues and doctors treating them.