OOIR: Observatory of International Research

Papers

(The TQCC of Cardiovascular Journal of Africa is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-08-01 to 2025-08-01.)

Article	Citations
Changing face of pulmonary embolism with COVID-19	33
Surgical experience in adults with Ebstein’s anomaly: long-term results	15
Endovascular treatment of Buerger’s disease in patients with critical limb ischaemia	10
Stubbornly preserving native leaflets is not always right: a case of tricuspid valve re-operation	9
Outcomes of percutaneous coronary intervention in a private hospital in Nigeria	9
Clinical profile and outcomes of young patients treated with implantable cardioverter defibrillators at a South African tertiary hospital: a review of two decades of implantable cardioverter defibrill	7
Knowledge, attitude and practice towards therapeutic lifestyle changes in the management of hypertension in Khartoum State	6
Left brachiocephalic vein–right atrial bypass in superior vena cava syndrome	6
A new biomarker to predict atrial fibrillation and its adverse events after coronary artery bypass surgery: red blood cell distribution volume	5
Alternative treatment of tricuspid valve vegetations	5
Assessment of papillary muscle free strain in hypertrophic cardiomyopathy and hypertension-induced left ventricular hypertrophy	5
Impact of the COVID-19 pandemic on cardiology fellowship training in a sub-Saharan African training centre: an African perspective	5
Awareness of heart failure and perception of the problem in the general population	5
Association of changes in NT-proBNP, hsTnT and uric acid levels with haemodynamic changes after targeted medical therapies in patients with idiopathic pulmonary arterial hypertension	5
Assessment of pacemaker lead-related infective endocarditis with three-dimensional echocardiography and cardiac computed tomography	4
Systemic immune–inflammation index, and neutrophilto-lymphocyte and platelet-to-lymphocyte ratios can predict clinical outcomes in patients with acute coronary syndrome	4
A novel marker for determining the severity of coronary artery disease: the metabolic coronary risk index	4
Investigation of left ventricular changes according to valve type in patients with surgical replacement due to isolated aortic stenosis	4
The effects on clinical outcomes of administering medications together or separately in prolonged dual antiplatelet therapy after peripheral revascularisation	4
Peri-operative echocardiography for lung transplantation in a critical patient with COVID-19	4
Assessment of left atrial morphological and functional differences in professional male football players: a prospective, case–control study	3
A retrospective study: efficacy of an originator versus a generic formulation of simvastatin in patients who suffer from hyperlipidaemia	3
Empagliflozin significantly prevents QTc prolongation due to amitriptyline intoxication	3
Role of nuclear factor kappa-B in TNF-induced cytoprotection	3
The non-negligible association between SYNTAX score and anxiety–depressive disorders	3

The use of strain-gauge plethysmography in the functional assessment of chronic venous disease: five-year experience at a single centre	3
A 10-year retrospective analysis of the clinical profile and outcomes of infective endocarditis at a tertiary hospital in KwaZulu-Natal, South Africa	3
Evaluation of clinical results of esmarch bandage application in giant saphenous vein closure during endovenous glue ablation	3
Assessment of P- to delta-wave interval and its relationship with accessory pathway properties in patients with pre-excitation	3
Association between salt sensitivity and blood pressure variability in patients with essential hypertension and predictive value for cardiovascular events	3
The relationship between gender and systemic immune–inflammation index in patients with new-onset essential hypertension	3
Mycotic abdominal aortic aneurysm: two cases caused by Salmonella enterica	3
The Healthy Aging Adult South Africa report card: a systematic review of the evidence between 2013 and 2020 for middle-aged South African men and women	2
Profile of adult patients presenting for rheumatic mitral valve surgery at a tertiary academic hospital	2
Identification and treatment of asymptomatic central venous catheter thrombosis after TAVI	2
Effect of lactate levels on extubation time in coronary artery bypass grafting surgery	2
A report card for healthy aging in South Africa	2
Identifying the optimal monopolar electrocautery output power in pedicular internal thoracic artery harvesting: 20 or 40 watts?	2
A cross-sectional study of the spectrum, aetiology and clinical characteristics of adult mitral valve disease at Chris Hani Baragwanath Academic Hospital	2
Profile and management of acute coronary syndromes at primary- and secondary-level healthcare facilities in Cape Town	2
Fatal pulmonary oedema associated with severe pre-eclampsia: challenges and lessons	2
PRELP promotes myocardial fibrosis and ventricular remodelling after acute myocardial infarction by the wnt/β–catenin signalling pathway	2
A three-year audit of pregnancy outcomes in women with pulmonary hypertension admitted to the high-risk obstetric unit at Inkosi Albert Luthuli Central Hospital, KwaZulu-Natal, South Africa	2
Repetitive use of levosimendan in clinical practice: a case series	2
A rare endocrine cause of ventricular tachycardia: a case series of two patients and a literature review	2
Effect of percutaneous coronary intervention with prolonged balloon pre-dilation on coronary flow in ST-segment elevation myocardial infarction	1
Response to ibutilide and the long-term outcome after catheter ablation for non-paroxysmal atrial fibrillation	1
Surgical treatment of left atrial dissection caused by percutaneous coronary intervention	1
Cardiac manifestation of corona virus disease 2019: a preliminary report	1
Factors associated with acute kidney injury and mortality during cardiac surgery	1
Establishing ionising radiation safety culture during interventional cardiovascular procedures	1
Normotensive young patients with acute coronary syndrome: Etiological factors and differences in the development of critical coronary lesion	1
The effect of different anaesthesia techniques on postoperative pain and hospital discharge in varicose vein surgery	1
A case of spontaneous isolated superior mesenteric arterial dissection with coeliac axis stenosis	1
Determinants of right ventricular systolic dysfunction among patients with left heart failure in a Ghanaian hospital	1
Association between the serum lipoprotein-associated phospholipase A2 level and acute coronary syndrome	1
Ventricular septal defect closure using radial incision of the tricuspid valve for exposure: is it really necessary?	1
Coronary artery bypass grafting in a patient with situs inversus totalis	1
Associations of conscientiousness with cardiac troponin T and stress coping responses in a teacher cohort: the SABPA prospective cohort study	1
Kounis syndrome caused by bee sting: a case report and literature review	1
Association between carotid intima–media thickness and acute kidney injury following isolated coronary artery bypass surgery	1
Application of computed tomographic angiography and echocardiography in predicting left atrial appendage thrombosis in patients with non-valvular atrial fibrillation	1
Prosthetic vascular graft management in above-knee amputations	1
Hypertension treatment in sub-Saharan Africa: a systematic review	1
Prevalence and associated risk factors for elevated blood pressure in young adults in South Africa	1
Comparison of flowmeter (transit time flow measurement) values for graft flow in three different surgical methods for isolated coronary artery bypass surgery	1
Interleukin-6 and its correlations with maternal characteristics and echocardiographic parameters in pre-eclampsia, gestational hypertension and normotensive pregnancy	1
The discrepancy of aromatase expression in epicardial adipose tissue between CHD and non-CHD patients	1
Long-term blood pressure trajectories and associations with age and body mass index among urban women in South Africa	1
Efficacy of amiodarone for the prevention of atrial fibrillation recurrence after cardioversion	1
Correlation between mitral valve area and left atrial function in rheumatic mitral valve stenosis patients	1
Out-of-hospital cardiac arrests in the city of Cape Town metropole of the Western Cape province of South Africa: a spatio-temporal analysis	1
Caseous calcification of the mitral annulus mimicking benign cardiac tumour of the mitral valve	1
Association of plasma BNP levels at different times with cardioversion success, maintenance of sinus rhythm and severity of diastolic dysfunction in patients with atrial fibrillation	1
Upper reversed-T mini-sternotomy for sutureless aortic valve replacement: an alternative for high-risk patients	1

Fascial plane regional anaesthesia techniques	1
The role of immature platelet count and immature platelet fraction in determining the need for transfusion in patients undergoing CABG	1
Enhancing cardiovascular skills development in Africa: Khartoum first PTMC workshop	1
Successful surgical treatment of left ventricular free wall rupture	1
Effect of different priming fluids on extravascular lung water, cell integrity and oxidative stress in cardiopulmonary bypass surgery	1
An unusually large left ventricular thrombus complicating anterior myocardial infarction: the value of multimodality imaging	1
Association between apelin-12 and creatine kinase-MB, depending on success of reperfusion in STEMI patients	1
Assessing volumetric changes in abdominal aortic aneurysms following endovascular repair	1
The association between psychological symptoms, sleep quality and severity of coronary artery disease in acute coronary syndrome	1