Dr Dennis Koh is a fully qualified and trained general surgeon, with sub-specialty training in Colorectal Surgery. He has performed numerous colon and rectal surgeries, both open and minimally invasive. He believes that each surgery should be adapted and tweaked to each individual patient’s unique case and situation with minimal impact on patient’s lifestyle. Dr Koh is also experienced in proctology and pelvic floor disorders. These include conditions like haemorrhoids (piles), anal fistula, anal fissures, anal abscesses, functional constipation and faecal incontinence.
Dr Dennis Koh
Designation: Senior Consultant, Colorectal Surgery
More About Dr Koh
- Bachelor of Medicine and Bachelor of Surgery (Nottingham)
- Master of Medicine (Surgery)
- Bachelor of Medical Sciences (Nottingham)
- Fellow Academy of Medicine Singapore (Surgery)
- Fellow of the Royal College of Surgeons of Edinburgh
- Member of the Royal College of Surgeons of Edinburgh
- Fellow of the Academy of Medicine (Surgery) of Singapore
- Bahasa Melayu/Indonesian
- Colorectal Surgery; both open and minimally invasive surgeries
– Laparoscopic (key-hole), single port surgery, robotic surgery and transanal endoscopic operation (TEO)
- Adept in the field of Endoscopy (colonoscopy and gastroscopy), including endoscopic stenting and endoscopic mucosal resection (EMR)
- Graduated from University of Nottingham, UK, with his medical degree
- Prior to obtaining his medical degree, Dr Koh also took a year off and obtained a Bachelor in Medical Science.
- Furtheredhis medical education and embarked on his surgical training in Singapore
- Obtained Master of Medicine in Surgery from National University of Singapore in 2005.
- Completed his advance surgical training with Singapore General Hospital and became a fellow of the Royal College of Surgeons of Edinburgh in 2009.
- Admitted as a fellow of the Academy of Medicine (Surgery) of Singapore in 2009.
- Was Awarded the SingHealth Health Manpower Development Plan (HMDP) Award and furtheredhis training in Hopitaux Universitaires de Geneve (HUG) Switzerland.
- Was a consultant surgeon in the Department of Colorectal Surgery in the Singapore General Hospital
- Further honed his skills in proctology and pelvic floor disorders during his fellowship in Geneva. These includeconditions like haemorrhoids (piles), anal fistula, anal fissures, anal abscesses, functional constipation and faecal incontinence.
8 Golden Tips To Keeping Your Kidneys Healthy
Singapore has one of the highest rates of kidney failure in the world with one person diagnosed with kidney failure every five hours. Kidney disease can happen quickly as a result of severe illness and injury, but most of often develops slowly and silently until the kidneys have nearly failed. You can protect your kidneys by taking the following simple steps: Keep fit and active Keeping fit helps to reduce your blood pressure, stave off weight gain and therefore reduce the risk of developing kidney disease. Aim to be active for 30 minutes or more on most days. Keep good control of your blood sugar level Singapore ranks 1st in the world for diabetes-induced kidney failure and two and three cases of kidney failure in Singapore are due to diabetes. High blood sugar damage the blood vessels and the millions of tiny filtering units in the kidney over time leading to kidney failure. Monitor your blood pressure Although many people are aware that high blood pressure can lead to a stroke or a heart attack, few know that it is also a common cause of kidney damage. Aim to maintain your blood pressure below 130/85 mmHg. Certain blood pressure medications are protective of the kidneys and may be prescribed by your doctor to retard the deterioration of your kidney function. Eat healthily and keep your weight in check Healthy eating help prevent diabetes, heart disease and other conditions associated with kidney disease. It is also important to reduce your salt intake. The average daily salt intake of a Singaporean is nine grams instead of the recommended five grams (one tablespoon). There is good evidence that a reduction of salt intake helps to lower blood pressure in both healthy individuals and individuals with high blood pressure. Try to limit the amount of processed and restaurant food and do not add salt to food. Do not smoke Smoking slows blood flow into the kidneys. When less blood reaches the kidneys, it impairs their ability to function properly. Smoking increases your risk of suffering a heart attack or stroke, which is associated with a higher risk of kidney disease. Smoking also increased the risk of kidney cancer by about 50 percent. Maintain a healthy fluid intake Conventional wisdom suggests that we should drink at least 8 glasses of fluid a day to maintain good health. The actual amount necessary for good kidney health varies between individuals depending on gender, weight, physical activity, environment and underlying medical conditions. In addition, people who have already had a kidney stone are advised to drink 2 to 3 litres of water daily to lessen the risk of forming a new stone. Be careful with pain killers Non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen are known to cause kidney damage if taken regularly. Occasional consumption is generally safe if your kidneys are healthy. However, if you need to take them for a prolonged period (for example chronic pain), then speak with your doctor to find a way to control your pain without putting your kidneys at risk. Get your kidneys screened regularly If you have either diabetes or high blood pressure, your doctor should screen you for kidney dysfunction as part of the routine care for the conditions. The kidneys are as important to health as your heart and lungs. The most important thing you can do to keep your kidneys safe is to take care of your body to reduce your chances of developing diseases that put a strain on your kidneys.
What Happens During a Heart Screening?
Heart disease is one of the top killers in Singapore and the world. Quite often it presents suddenly and catastrophically with a heart attack or sudden death. Earlier detection of underlying heart disorders helps us reverse its progression and prevent serious complications. Heart screening refers to a medical evaluation which may include one or more specialised tests to detect underlying heart disorders in people who are otherwise well and have no symptoms. So what happens during heath screening? It begins first with a thorough consultation and physical examination by a general physician or cardiologist to assess for the presence of risk factors the predispose to the narrowing of blood vessels, also known as atherosclerosis. These include, diabetes, hypertension, high cholesterol, obesity, smoking, sedentary lifestyle, poor nutrition, excess alcohol and an existing family history of heart disease, stroke or sudden death. A resting electrocardiogram (ECG) is performed and blood tests are carried out, which include but are not limited to the fasting cholesterol and blood sugar. After this initial assessment, the physician would then determine, based on the age, background of the patient, presence and severity of risk factors, on what would be the most appropriate tests to conduct subsequently. There are several tests available to assess the heart, each looking at different aspects of the function and structure of the heart to determine the overall health, and subsequent risk of developing heart disease and its complications. Some common tests include an echocardiogram or ultrasound of the heart which allows us to look into the heart and observe the internal structure of valves and chambers, and the ability to pump. Another important aspect to investigate is the health of the coronary arteries, which are crucial in supplying the heart muscles with blood and oxygen. Unhealthy narrowed vessels may be detected by stressing the heart either with exercise or with drugs, to look for any evidence of inadequate blood supply. This is done by treadmill ECG testing which may additionally involve cardiac imaging with echocardiography or nuclear perfusion for greater accuracy. The anatomy of the coronary artery may also be directly assessed with a Computed Tomography (CT) scan either in the for of a calcium scoring study or coronary angiogram, which requires a slightly higher dose of radiation as well as injection of intravenous contrast agents. After completing the tests, the doctor will review all the findings with you, establish your individual risk and make further recommendation in terms of preventive interventions. This may range from just simple healthy lifestyle modifications such as exercise, weight loss and good nutrition, to taking medications or even surgeries in more serious cases. Depending on the findings, the patient may also require future monitoring, in order to see if the interventions have stopped or even reversed the progression of any existing disease. Do ask your doctor whether hearth screening might be suitable for you, even if you feel well, especially if you fulfil the following criteria: Male > 45 years of age or female > 50 years, particularly if planning g to start vigorous exercise. If there is pre-existing family history of heart disease, stroke or sudden death, or if you already have 2 or more of the above mentioned risk factors of heart disease.