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A Case Report of Heparin Resistance due to Acquired Antithrombin III Deficiency

Intravenous heparin therapy is used in the management of angina and myocardial infarct with increasing frequency in recent years. Those patients who have been...

Thoracoscopic Thymectomy for Myasthenia Gravis: A Case Report

Total thymectomy is the established surgical therapeutic method for generalised myasthenia gravis. Several approaches are used for the surgical removal of the thymus and...

Changing the Institutional Practice of Prolonged Mechanical Ventilation after Coronary Artery Bypass Graft Surgery to Early Extubation

In the past, cardiac patients in this institution were ventilated postoperatively for a prolonged period, frequently overnight. Since 1997 some of our cardiac anaesthetists...

Potentiation of Acetylcholine-induced Smooth Muscle Contraction in Rat Ileum by Lead

It is known that exposure of animals and humans to heavy metals such as lead can result in neurological dysfunction. Pharmacodynamic effects of lead...

Bidirectional Cavopulmonary Anastomosis

Children with complex congenital heart disease and a functional single ventricle may not be ideal candidates for a Fontan procedure. A staged approach to...

A Practical Technique of Colour Image Analysis: Applications in Experimental Research

Colour image analysers have been extensively used in medical research since 1970 for histomorphometric studies. Image analysis gives more information and a better understanding...

Tissue Microangiography Using a Simplified Barium Sulphate Cadaver Injection Technique

The understanding of blood supply is the cornerstone of successful tissue transfer in reconstructive surgery. This understanding has been derived largely from cadaveric dissections,...

Effect of Antiangiogenic Agents on Experimental Animal Models of Hepatocellular Carcinoma

Metastatic spread is the principal reason of treatment failure in solid tumours. Surgery, radiation therapy and chemotherapy have not manifestly altered the prognosis for...

Gut Barrier Dysfunction in Experimental Acute Pancreatitis

Bacterial infections are devastating and potentially lethal complications of acute pancreatitis, responsible for up to 80% of deaths in the condition. Pathogenetic studies of...

Experimental Models of Pancreatitis

From a historical perspective, the first experimental pancreatitis was induced by Claude Bernard in 1856 by the injection of bile and olive oil into...

Immunological Consequences of Trauma and Shock

Despite intensive research and intervention, trauma continues to be the leading cause of death during the first three decades of life in the USA,...

Murine Metastatic Tumour Models for Cancer Gene Therapy Research

In the evaluation of any new cancer treatment, the use of appropriate experimental animal tumour models to bridge the gap between in vitro discovery...

Experimental Models of Hepatic Fibrosis in the Rat

Hepatic fibrosis and cirrhosis of the liver are complex diseases which, in man, may be caused by such varied factors as alcohol, hepatitis, schistosomiasis,...

Development of the Human Intrahepatic Biliary System

The development of the human biliary system has been studied extensively. This knowledge is essential to the understanding of the pathogenesis of a spectrum...

Regulation of Insulin Secretion by Nerves and Neuropeptides

The pancreatic islets of Langerhans were described by Paul Langerhans in 1869. They are distributed throughout the entire pancreas forming in adults approximately 1%...

An Animal Model for the Study of Hepatic Stellate Cell and Hepatocellular Carcinoma Interaction

Hepatic stellate cells (HSC) are mesenchymal cells that are prominent in various forms of liver injury, in particular with cirrhosis or carbon tetrachloride-induced fibrosis....

Establishment of Animal Models Using Experimental Rats for Allogeneic Tissue Transplantation and Quantitative Flow Cytometric Detection of Immunochimera

Allogeneic tissue and organ transplantation has long been an important medical issue, as it provides an effective treatment alternative for a broad spectrum of...

Experimental Study of Hypovolaemic Shock-Induced Gastric Mucosal Lesions in the Rat

Hypoxic tissue injury is not only caused by lack of oxygen as was previously believed. Now it is clear that tissue injury associated with...

The Role of Mast Cell Degranulation in Ischaemia-reperfusion-induced Mucosal Injury in the Small Intestine

Although a number of data support the notion that mast cell (MC) degranulation Is an important component of the tissue response elicited by ischaemia-reperfusion,...

Synergistic Effect of Hepatitis B Virus and Aflatoxin B1 in Hepatocarcinogenesis in Tree Shrews

Primary hepatocellular carcinoma (HCC) is one of the commonest cancers in some parts of the world including several areas in China. The geographically distinct...

The Expression of Insulin-like Growth Factor II, Hepatitis B Virus X Antigen and p21 in Experimental Hepatocarcinogenesis in Tree Shrews

Hepatocarcinogenesis is a multistage and multifunctional process. Epidemiological studies indicate that contamination of food with aflatoxin B, (AFB,) and chronic infection with hepatitis B...

Nitric Oxide Synthase-Its Distribution and Alteration in the Intramural Ganglia of the Urinary Bladder in Normal and Urethra-obstructed Guinea Pigs

Nitric oxide (NO) has been recognised as a nonadrenergic noncholinergic (NANC) inhibitory neurotransmitter at various sites in the nervous system. Its function as a...

Radionuclide Studies of Articular Cartilage in the Early Diagnosis of Arthritis in the Rabbit

Osteoarthritis is a common joint disease that involves destruction of articular cartilage. Magnetic resonance imaging (MRI) provides a sensitive imaging modality for the diagnosis...

The Effect of Storage at -70°C and -150°C on the Torsion Properties of the Canine Femur

Allograft transplantation of bone has been established as a viable and useful reconstructive procedure when limb salvage is the option of choice. For bone...

Direct Mucosal Targeting of Colonic Receptors by Prokinetic Drugs in an Experimental Model

The direct intraluminal (IL) administration of drugs into the intestine may have an important regional action and therefore clinical implications in the effective management...

The Viability of Liver Graft for Transplantation After Prolonged Warm Ischaemia

Liver transplantation (LTx) is the treatment of choice for many patients with end stage liver disease. However liver allograft availability prevents its widespread application. This...

Use of Titanium Prosthesis to Bridge a Vertebral Gap in the Spine—A Preliminary Experimental Study

Bridging a vertebral gap in the spine is one of the commonest problems facing the spine surgeon after dealing with a tumour, infection or...

A Simple Method of Blood Pressure Measurement in the Pig Using a Neonatal Cuff

Blood pressure is an important parameter commonly measured in experimental studies using animal models. Various non-invasive techniques to monitor blood pressure have been described...

The Results of Autogenous Tibial Periosteal Transplants for Full Thickness Cartilage Defects in the Knee Joints of Pigs

Articular cartilage injuries to the knee are commonly seen by team doctors, sports physicians and orthopaedic surgeons. Despite many clinical as well as experimental...

Microvascular Lung Tissue Oxygenation—A Methodological Study in the Pig

Although the lung is mostly referred to as a respiratory organ it also exhibits a variety of metabolic functions, e.g. uptake, storage and/or synthesis...

The Philosophical Basis of the Experimental Method

The application of the experimental approach to Science and Medicine has its roots in the 16th century. William Harvey (1578-1657), who demonstrated the passage...

Primitive Neuroectodermal Tumour of the Chest Wall—A Report of Two Cases and Review of Literature

Tumours of the chest wall are uncommon and are usually sarcomatous in nature. Primitive neuroectodermal tumours (PNETs) are rare and are thought to arise...

Minimally Invasive Repair of Atrial Septal Defects—A Case Series

Atrial septal defect (ASD) forms the commonest grown up congenital heart diseases seen in cardiac surgical practice. Repair of this has become so safe...

A Case Report on the Perinatal Management of a 30-week Preterm Baby with Congenital Complete Heart Block

The association between congenital complete heart block (CHB) and maternal autoimmune disorders has been described for many years. Maternal systemic lupus erythematosus (SLE) is...

Cardiopulmonary Exercise Testing in Heart Transplant Candidates

Congestive heart failure (CHF) is a leading cause of cardiovascular morbidity and mortality. This syndrome tends to run a chronic course with a wide...

Long-Term Outcome of Aortofemoral Bypass for Aortoiliac Occlusive Disease

The management of aortoiliac occlusive disease has been evolving in the past few decades. Surgical options include aortofemoral bypass, endarterectomy, extraanatomical bypass and endovascular...

Abdominal Complications after Cardiac Surgery

Despite intensive therapeutic efforts, both the incidence and mortality of gastrointestinal complications after cardiac surgery employing cardiopulmonary bypass (CPB) have not decreased during the...

Transesophageal Echocardiography or Fluoroscopy During Port-Access Surgery?

Minimally invasive techniques are increasingly being used in cardiac surgery. In particular, coronary artery bypass grafting (CABG) and mitral valve surgery are now often...

Giant Pericardial Lipoma: Unusual Cause of Intrathoracic Mass

Cardiac and pericardial lipomas are very rare tumours. They remain asymptomatic for a long time and produce symptoms, if at all, by the virtue...

A Case of a Diaphragmatic Rupture Complicated With Lacerations of Stomach and Spleen Caused by a Violent Cough Presenting With Mediastinal Shift

Diaphragmatic rupture is a recognised consequence of high-velocity blunt trauma to the abdomen and chest and also has been reported in 0% to 5%...

Surgery for Atrial Fibrillation

Atrial fibrillation is the most common sustained cardiac arrhythmia. The overall prevalence of atrial fibrillation is 0.4%. This article is available only as a PDF....

Cardiovascular Medicine and Surgery in Singapore: The Next Lap

Fourteen years ago, an editorial in the Annals announced the coming of age of cardiology in Singapore. Among the issues raised in that editorial...

Deep Hypothermic Circulatory Arrest in Adults Undergoing Aortic Surgery: Local Experience

The use of deep hypothermic circulatory arrest (DHCA) as a method of cerebral protection during aortic surgery was first described in 1975. Its use...

Routine Microbiological Screening in Septic Patients in a Cardiac Surgical Intensive Care Unit

Compared to in-hospital patients, patients treated in an intensive care unit (ICU) have the highest risk of contracting an infection. The risk correlates well...

Inadvertent Fracture During the Attempted Removal of Entrapped Swan-Ganz Catheter

Pulmonary artery catheter is widely used in cardiovascular surgical practice. Various complications of the Swan-Ganz catheter during insertion, its long-term placement, or removal are...

Pathological Pulmonary Hernia in a Patient With Metastatic Breast Cancer

Pulmonary hernia is a rare and uncommon clinical entity that has been defined as a protrusion of pleural membranes or lung parenchyma through the...

Thoracic Complications of Radiofrequency Ablation of Recurrent Hepatoma

Radiofrequency ablation (RFA) intended to produce complete thermal necrosis of unresectable primary or secondary hepatic malignancies have gained widespread availability and acceptance over the...

Off-pump Coronary Artery Bypass is a Safe Option in Patients Presenting as Emergency

Percutaneous coronary intervention (PCI) is the preferred therapy strategy for revascularisation in the case of an acute coronary syndrome (ACS) or acute myocardial infarction...

Asia’s First Successful Minimally Invasive Transapical Transcatheter Mitral Valve-in-Valve Implantation

Dear Editor, Reoperation for mitral valve re-replacement in patients with patent coronary bypass grafts can be a formidable task in the elderly. We report a...

Long-term Outcomes of Medical Therapy Versus Coronary Revascularisation in Patients with Intermediate Stenoses Guided by Pressure Wire

Although coronary angiography has been used as the “gold standard” imaging technique for the diagnosis of coronary artery disease, it is essentially a lumenogram...

A Novel “Box Lesion” Minimally Invasive Totally Thoracoscopic Surgical Ablation for Atrial Fibrillation

  Atrial fibrillation (AF) is the most common and severe cardiac arrhythmia. It affects 0.4% to 1% of the general population, and the prevalence of...

Percutaneous paravalvular leak repair for severe aortic regurgitation after transcatheter aortic valve implantation (TAVI)

Paravalvular leaks (PVLs) are not uncommon after surgical valve replacement. The need for re-operation for clinically significant leaks is between 1 and 3%. Percutaneous...