MyMedR

Fulltext Coronary artery disease in Malaysia: a perspective

Jeyamalar R

Med J Malaysia, 1991 Mar;46(1):1-6.

Severe mitral incompetence following balloon mitral valvuloplasty: complete resolution during follow-up

Kannan P, Jeyamalar R

Cathet Cardiovasc Diagn, 1995 Mar;34(3):220-1; discussion 222-3.

Mitral incompetence (MR) is a complication of balloon mitral valvuloplasty. There are few reports of long-term outcome. We believe this is the first report in the literature of complete resolution during follow-up of severe mitral regurgitation resulting from balloon valvuloplasty.

Management of infective endocarditis in pregnancy

Jeyamalar R, Sivanesaratnam V

Aust N Z J Obstet Gynaecol, 1991 May;31(2):123-4.

PMID: 1930032

Fulltext Ruptured aneurysms of the sinus of Valsalva

Jeyamalar R, Kannan P

Med J Malaysia, 1991 Dec;46(4):371-5.

PMID: 1840448

Aneurysms of the sinus of Valsalva are uncommon disorders and are usually congenital in origin. When these aneurysms rupture into an intracardiac chamber, they may be silent initially but later give rise to progressive heart failure due to left or right shunting and aortic regurgitation. The mortality and morbidity in untreated cases is high. We report 13 patients with ruptured aneurysms of the sinus of Valsalva who underwent surgical repair. There were seven males and six females with a mean age of 24.5 years. Three patients were asymptomatic and five were in congestive cardiac failure. The majority of patients (61.5%) had insidious onset of symptoms, only 2 cases presenting acutely. The connection was between the right aortic sinus and the right ventricle in 11 cases and the non coronary sinus and the right ventricle in 2 cases. Associated cardiac anomalies included a ventricular septal defect (8 patients) and aortic regurgitation (6 patients). There was 1 post operative death and 1 patient required re-operation three months later for a recurrence of the fistula. All 6 patients with aortic regurgitation required aortic valve replacement. All patients remained well and asymptomatic during follow up ranging from 2 to 19 years.

Eisenmenger syndrome in pregnancy

Jeyamalar R, Sivanesaratnam V, Kuppuvelumani P

Aust N Z J Obstet Gynaecol, 1992 Aug;32(3):275-7.

PMID: 1445144

A reversible dilated cardiomyopathy due to thyrotoxicosis

Jeyamalar R, Chan SP

Int J Cardiol, 1995 Nov 10;52(1):83-4.

PMID: 8707441

Thyrotoxicosis gives rise to a high output cardiac failure. Rarely, it can cause a dilated cardiomyopathy with severe impairment of myocardial function which improves significantly following treatment.

Hepatotoxicity of amiodarone

Jeyamalar R, Pathmanathan R, Wong D, Kannan P

Ann Acad Med Singap, 1992 Nov;21(6):838-40.

PMID: 1295429

Amiodarone, a commonly used antiarrhythmic agent, has numerous adverse effects. The purpose of this case report is to highlight its hepatotoxicity, an unusual complication of long term amiodarone therapy. Our patient is a 76-year-old man with underlying ischaemic heart disease and recurrent ventricular tachycardia. Eleven months after commencing amiodarone, he developed asymptomatic raised aminotransferases which resolved following drug withdrawal. Amiodarone was then reintroduced and four years later, the patient developed hepatomegaly, worsening liver biochemistry and histopathological changes consistent with early cirrhosis. His symptoms improved following discontinuation of amiodarone. However, hepatomegaly and a low serum albumin still persist four years later.

Fulltext The surgical repair of ruptured sinus of valsalva aneurysms

Yap S, Jeyamalar R

Med J Malaysia, 1987 Sep;42(3):182-5.

PMID: 3506641

Over a period of nine years, from June 1976 through May 1985, 18 cases of ruptured sinus of Valsalva aneurysms were seen at the University Hospital, Kuala Lumpur (UK KL). Seven of these cases were treated surgically. The majority of patients were males, with a mean age of 26.6 years. All cases were symptomatic. The site of aneurysm was the right coronary sinus in five patients and the non-coronary sinus in two patients. All aneurysms ruptured into the right ventricle. The fistula was closed via a transaortic approach. In addition, repair of the right heart chamber was necessary in six patients. There were no deaths. Clinically significant morbidity included aortic regurgitation in one patient and residual fistula requiring reoperation in another. The long term follow-up at two years was excellent.

Fulltext Acute myocardial infarction after blunt chest injury

Kannan P, Saradha N, Jeyamalar R

Singapore Med J, 1992 Feb;33(1):86-8.

PMID: 1598616

A 20-year-old male sustained an inferior myocardial infarction following blunt chest trauma, after a motor vehicle accident. Though coronary arteriograms 9 months later were normal, LV angiography revealed severe hypokinesia of the inferobasal and diaphragmatic segments. The literature is reviewed with respect to mechanisms of injury, autopsy and angiographic findings and clinical outcome in this condition.

Fulltext Acute intermittent porphyria: the first case report in Malaysia

Jeyamalar R, Ch'ng SL

Singapore Med J, 1986 Dec;27(6):548-52.

PMID: 3589732

Porphyrias are uncommon disorders of haem metabolism and we report the first documented case of acute intermittent porphyria in Malaysia. The biochemical, clinical features and the management of this order are discussed.

Fulltext Arteriovenous fistula simulating deep vein thrombosis as a complication of lumbar disc surgery

Teh A, Jeyamalar R, Habib ZA

Med J Malaysia, 1993 Dec;48(4):440-2.

PMID: 8183169

Acquired arteriovenous fistula is an unusual complication of lumbar disc surgery. Diagnosis is often late because of the lack of awareness of this complication and also because it may simulate other vascular diseases. A case diagnosed initially as deep vein thrombosis of the leg is described.

Major gynaecological surgery in patients with severe coronary artery disease--the combined approach

Kannan P, Sivanesaratnam V, Jeyamalar R, Delilkan A, Ong G

Aust N Z J Obstet Gynaecol, 1990 May;30(2):146-9.

PMID: 2400358

The gynaecologist today is likely to encounter elderly patients with severe coronary heart disease requiring major gynaecological surgery. The successful outcome in 2 such patients with compromised coronary circulation and impaired left ventricular function emphasized the importance of combined care with the cardiologist and the anaesthetist. The insertion of a Swan-Ganz catheter for close perioperative monitoring is vital. The intra-and postoperative problems are discussed.

Primary cardiac amyloidosis

Jeyamalar R, Pathmanathan R, Yap SF, Kannan P

Ann Acad Med Singap, 1991 Nov;20(6):795-7.

PMID: 1803972

Cardiac amyloidosis is an uncommon and often unrecognised cause of cardiac failure. It is an infiltrative disease that may mimic either a restrictive or hypertrophic cardiomyopathy, constrictive pericarditis, coronary artery disease or valvular heart disease. The diagnosis should be suspected in a patient with cardiac failure who has low voltage complexes on the electrocardiogram, in association with increased myocardial mass and echogenicity on the echocardiogram. The definitive diagnosis, however, can only be made by endomyocardial biopsy or biopsy of any involved organ in systemic amyloidosis. Prognosis is poor and treatment ineffective.

Myocardial infarction in a young Indian grandmultipara

Kannan P, Raman S, Ramani VS, Jeyamalar R

Aust N Z J Obstet Gynaecol, 1993 Nov;33(4):424-6.

PMID: 8179560

Trans (elaidic) fatty acids adversely affect the lipoprotein profile relative to specific saturated fatty acids in humans

Sundram K, Ismail A, Hayes KC, Jeyamalar R, Pathmanathan R

J Nutr, 1997 Mar;127(3):514S-520S.

PMID: 9082038

Although dietary trans fatty acids can affect plasma lipoproteins negatively in humans, no direct comparison with specific saturated fatty acids has been reported, even though trans fatty acids were designed to replace saturates in foods and food processing. In this study, dietary trans 18:1 [elaidic acid at 5.5% energy (en)] was specifically exchanged for cis 18:1, 16:0 or 12:0 + 14:0 in 27 male and female subjects consuming moderate fat (31% en), low cholesterol (<225 mg/d) whole food diets during 4-wk diet periods in a crossover design. The trans-rich fat significantly elevated total cholesterol and LDL cholesterol relative to the 16:0-rich and 18:1-rich fats and uniquely depressed HDL cholesterol relative to all of the fats tested. Trans fatty acids also elevated lipoprotein (a) [Lp(a)] values relative to all dietary treatments. Furthermore, identical effects on lipoproteins were elicited by 16:0 and cis 18:1 in these subjects. The current results suggest that elaidic acid, one of the principal trans isomers produced during industrial hydrogenation of edible oils, adversely affects plasma lipoproteins. Thus, the negative effect of elaidic acid on the lipoprotein profile of humans appears to be unmatched by any other natural fatty acid(s).

Fulltext Benign persistent pneumoperitoneum in systemic sclerosis

Wang CL, Wang F, Wong KC, Jeyamalar R

Singapore Med J, 1993 Dec;34(6):563-4.

PMID: 8153727

We describe a 50-year-old Chinese woman who had severe gastrointestinal manifestations from systemic sclerosis complicated by spontaneous pneumoperitoneum in the absence of either visceral perforation or pneumatosis cystoides intestinalis. This is a rare complication of systemic sclerosis; only four other cases have been reported. Recognition of this condition is important so as to avoid unnecessary surgery.

Intravascular imaging-guided treatment of severe coronary artery calcification with orbital atherectomy: A prospective single-centre registry

Yap LB, Choy CN, Navin S, Koh KW, Jeyamalar R, Balachandran K

Med J Malaysia, 2023 Jan;78(1):7-13.

PMID: 36715184

INTRODUCTION: Coronary artery calcification can lead to suboptimal results when performing coronary angioplasty with conventional techniques. The presence of severe coronary artery calcium increases the complications of percutaneous coronary intervention as it may impede stent delivery and optimal stent expansion. The purpose of this study was to determine the procedural success and safety of orbital atherectomy (OA) in calcified lesions.

MATERIALS AND METHODS: This was a prospective single-centre study regarding the utility of OA in the treatment of calcified coronaries. Intravascular ultrasound (IVUS) or optical coherence tomography (OCT) was used in all cases to characterise the severity of calcium pre-procedure, guide vessel sizing and assess procedural success. The primary endpoint was procedural success, defined by successful stent implantation following OA treatment. The secondary endpoint was in-hospital and 30-day major adverse cardiovascular event (MACE).

RESULTS: Ten patients with severely calcified lesions were successfully treated with OA. The primary endpoint was achieved in all patients. All of the lesions were severely calcified with concentric calcium. None of the patients suffered in-hospital or 30-day MACE. The average minimal luminal diameter at baseline was 1.7 ± 0.3 mm and the post- PCI luminal diameter was 3.0 ± 0.3 mm, with a significant luminal gain of 1.3 ± 0.3 mm (p < 0.01). Slow flow during procedure occurred in 2 (20%) cases and dissection occurred in 1 (10%) case during procedure. These were successfully treated with stent delivery to achieve TIMI III flow. There were no cases of stent thrombosis or vessel perforation.

CONCLUSION: Our experience demonstrates the feasibility and safety of OA in the management of calcified coronary stenosis. Intravascular imaging is an important adjunct to the use of OA to assess the severity of calcified coronary lesions, success of OA treatment and to aid sizing of the vessel for stent implantation. OA is an effective treatment approach to disrupt coronary calcification, facilitating stent implantation with optimal results. It is a safe procedure with good success rate and low rate of complications.

Left main stem stenosis angioplasty with intravascular ultrasound optimisation criteria guidance using a new generation everolimus drug-eluting stent

Yap LB, Choy CN, Koh KW, Kannan P, Jeyamalar R, Navin S, et al.

Med J Malaysia, 2023 Mar;78(2):139-144.

PMID: 36988521

INTRODUCTION: Intravascular ultrasound (IVUS) is recommended in the use of left main stem (LMS) percutaneous coronary intervention (PCI). Since the LMS diameter is usually larger than other coronary arteries, a new generation everolimus drug-eluting stent (DES), Synergy Megatron DES (Boston Scientific) has better axial and radial strength allowing more post implant overexpansion and consequently better suited for LMS lesions. We performed a study to evaluate the clinical outcomes of PCI using 1) an improved IVUS protocol with optimisation targets and 2) the use of Megatron stents.

MATERIALS AND METHODS: This was a study involving LMS PCI coronary lesions using the Synergy Megatron DES. An IVUS protocol using predefined optimisation targets to evaluate for stent malapposition, longitudinal stent deformation, optimal stent expansion >90% of reference lumen and appropriate distal landing zone was used in all cases. The primary end-point was procedural success, defined by successful stent implantation with <30% residual stenosis. The secondary end-point was in-hospital and 30-day major adverse cardiovascular event (MACE).

RESULTS: Eight patients with significant LMS stenosis were successfully treated with the Megatron stent. The primary end-point was achieved in all patients. There were no cases of stent malapposition or longitudinal stent deformation, one case did not have optimal LMS stent expansion and one case did not have an appropriate distal landing zone. IVUS optimisation criteria were met in 6 (75%) cases. There were no complications of coronary dissection, slow or no reflow, stent thrombosis or vessel perforation. None of the patients suffered in-hospital or 30-day MACE. The average LMS MLD at baseline was 2.1 ± 0.1mm and the post-PCI LMS MLD was 4.0 ± 0.5mm, with a significant acute luminal gain of 1.9 ± 0.7mm (p<0.01). A post-PCI MSA of 17 ± 3.9 mm2 was numerically superior compared to those documented in other LMS PCI trials.

CONCLUSION: This study demonstrates low rates of shortterm major adverse cardiovascular events among patients with LMS PCI using the Megatron stents. It highlights the usefulness of IVUS-guided optimisation in LMS PCI. With the use of intravascular imaging, the new generation stent technology can improve the treatment of large proximal vessels and PCI of LMS lesions.

Updates in the management of Dyslipidaemia in the high and very high risk individual for CV risk reduction

Jeyamalar R, Wan Azman WA, Nawawi H, Choo GH, Ng WK, Rosli MA, et al.

Med J Malaysia, 2018 06;73(3):154-162.

PMID: 29962499 MyJurnal

Cardiovascular disease (CVD) has been the main cause of mortality and an important cause of morbidity in Malaysia for several years. To reduce global cardiovascular (CV) risk in the population, primary preventive strategies need to be implemented. Hypercholesterolaemia is one of the major risk factors for CVD. This paper is an expert review on the management of hypercholesterolemia focusing on high and very high risk individuals. In low and Intermediate risk individuals, therapeutic lifestyle changes (TLC) and a healthy lifestyle alone may suffice. In high and very high risk individuals, drug therapy in conjunction with TLC are necessary to achieve the target LDL-C levels which have been shown to slow down progression and sometimes even result in regression of atherosclerotic plaques. Statins are first-line drugs because they have been shown in numerous randomized controlled trials to be effective in reducing CV events and to be safe. In some high risk individuals, despite maximally tolerated statin therapy, target Low Density Lipoprotein Cholesterol (LDL-C) levels are not achieved. These include those with familial hypercholesterolaemia and statin intolerance. This paper discusses non-statin therapies, such as ezetimibe and the newer Proprotein convertase subtilisin/kexin type 9 Inhibitors (PCSK9-i).

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