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 2022-01-01 to 2026-01-01.)

Article	Citations
Changing face of pulmonary embolism with COVID-19	10
Outcomes of percutaneous coronary intervention in a private hospital in Nigeria	9
Protective effects of montelukast against doxorubucin-induced cardiotoxicity in rats	8
Relationship between ventricular arrhythmia and repolarisation parameters in patients with biventricular implantable cardioverter defibrillator	7
Surgical experience in adults with Ebstein’s anomaly: long-term results	7
Urinary dopamine, sodium handling, and blood pressure in a bi-ethnic South African population: the SABPA study	7
Point-of-care testing compared to gold-standard laboratory methods in the measurement of serum lipids	6
Isolated coronary artery bypass in octogenarians: does gender matter?	6
Outcomes of single-ventricle physiology in central South Africa	6
Left brachiocephalic vein–right atrial bypass in superior vena cava syndrome	5
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	5
Endovascular treatment of Buerger’s disease in patients with critical limb ischaemia	5
Improving cardiac function of angiotensin receptor/ neprilysin inhibitor in patients with acute myocardial infarction: a systematic review and meta-analysis	4
Prevalence of occlusive myocardial infarction in patients diagnosed with non-ST-elevation myocardial infarction at a single private facility in Cape Town, South Africa	4
Assessment of papillary muscle free strain in hypertrophic cardiomyopathy and hypertension-induced left ventricular hypertrophy	4
A novel method that can be used in both the diagnosis and treatment of peripheral arterial disease in diabetics: vibration-mediated dilation	4
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	4
Two vessels, one trigger: simultaneous LAD and CX occlusion in Type II Kounis syndrome	4
Awareness of heart failure and perception of the problem in the general population	4
A new biomarker to predict atrial fibrillation and its adverse events after coronary artery bypass surgery: red blood cell distribution volume	4
Exploring the influence of risk factors on outcomes following surgical closure of ventricular septal defects	3
Identification of genetic risk variants in PCSK9 gene and its association with myocardial infarction in Pakistani Pashtun population	3
A novel marker for determining the severity of coronary artery disease: the metabolic coronary risk index	3
Alternative treatment of tricuspid valve vegetations	3
Impact of the COVID-19 pandemic on cardiology fellowship training in a sub-Saharan African training centre: an African perspective	3

A case of infective endocarditis with the manifestation of multi-organ embolisms: a case report	3
The effects on clinical outcomes of administering medications together or separately in prolonged dual antiplatelet therapy after peripheral revascularisation	3
Echocardiographic multiparameter assessment for patients with heart failure with preserved ejection fraction and atrial fibrillation	2
Systemic immune–inflammation index, and neutrophilto-lymphocyte and platelet-to-lymphocyte ratios can predict clinical outcomes in patients with acute coronary syndrome	2
Association between salt sensitivity and blood pressure variability in patients with essential hypertension and predictive value for cardiovascular events	2
Assessment of the impact of carotid intima-media thickness on postoperative cognitive dysfunction following elective noncardiac surgery	2
Effect of metoprolol and bisoprolol on bleeding rates in patients with atrial fibrillation	2
The value of measured partial oxygen pressure during pulmonary vein closure and the relationship with the diameter of the closed vein in patients with cryoablation	2
Investigation of left ventricular changes according to valve type in patients with surgical replacement due to isolated aortic stenosis	2
A retrospective study: efficacy of an originator versus a generic formulation of simvastatin in patients who suffer from hyperlipidaemia	2
Contemporary risk factors associated with ischaemic heart disease in central South Africa: a single-centre study	2
Sex differences in mortality and hospitalisation in heart failure patients: sex differences in heart failure.	2
Assessment of pacemaker lead-related infective endocarditis with three-dimensional echocardiography and cardiac computed tomography	2
Repolarisation disturbances in ischaemic stroke: unveiling the prognostic role of the frontal QRS-T angle	2
Evaluation of clinical results of esmarch bandage application in giant saphenous vein closure during endovenous glue ablation	2
Krüppel-like factor 5 transcription factor is a positive regulator of NRG-1 in human coronary artery smooth muscle cells	2
Assessment of left atrial morphological and functional differences in professional male football players: a prospective, case–control study	2
Clinical and echocardiographic characteristics of patients who developed adverse events following Benzathine penicillin G injection for secondary prophylaxis of rheumatic heart disease: a cross-sectio	2
Role of nuclear factor kappa-B in TNF-induced cytoprotection	1
Empagliflozin significantly prevents QTc prolongation due to amitriptyline intoxication	1
Effects of mild and moderate hypothermia on renal injury evaluated with neutrophil gelatinase associated lipocalin cystatin C and near infrared spectroscopy in patients undergoing cardiopulmonary bypa	1
The relationship between gender and systemic immune–inflammation index in patients with new-onset essential hypertension	1
Evaluation of the effects of dapagliflozin on subclinical atherosclerosis with two non-invasive methods: pulse wave velocity and carotid intima-media thickness	1
Prevalence and associated risk factors for elevated blood pressure in young adults in South Africa	1
The role of immature platelet count and immature platelet fraction in determining the need for transfusion in patients undergoing CABG	1
Effect of lactate levels on extubation time in coronary artery bypass grafting surgery	1
Profile and management of acute coronary syndromes at primary- and secondary-level healthcare facilities in Cape Town	1
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	1
Estimated glomerular filtration rate may not be correlated with the grade of coronary collateral circulation in patients with chronic total occlusion	1
Valve-sparing aortic root replacement in acute type A aortic dissection	1
Cardiometabolic risk factors among public school teachers in Vhembe District: a cross-sectional study	1
Mycotic abdominal aortic aneurysm: two cases caused by Salmonella enterica	1
Electrocardiographic patterns in an urban community of South Kivu in the Democratic Republic of Congo	1
A report card for healthy aging in South Africa	1
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	1
Yield of family screening in dilated cardiomyopathy within low-income setting: Tanzanian experience	1
Response to ibutilide and the long-term outcome after catheter ablation for non-paroxysmal atrial fibrillation	1
A rare endocrine cause of ventricular tachycardia: a case series of two patients and a literature review	1
Identification and treatment of asymptomatic central venous catheter thrombosis after TAVI	1
A 10-year retrospective analysis of the clinical profile and outcomes of infective endocarditis at a tertiary hospital in KwaZulu-Natal, South Africa	1
Identifying the optimal monopolar electrocautery output power in pedicular internal thoracic artery harvesting: 20 or 40 watts?	1
The non-negligible association between SYNTAX score and anxiety–depressive disorders	1
The use of strain-gauge plethysmography in the functional assessment of chronic venous disease: five-year experience at a single centre	1
Oxidative metabolism of neutrophils in acute coronary syndrome	1
A cross-sectional study of the spectrum, aetiology and clinical characteristics of adult mitral valve disease at Chris Hani Baragwanath Academic Hospital	1
Association between serum α-klotho level and the prevalence of heart failure in the general population	1
Normotensive young patients with acute coronary syndrome: Etiological factors and differences in the development of critical coronary lesion	1
Comparison of serum lipoprotein(a) levels in young and middle-aged patients presenting for the first time with ST-elevation myocardial infarction: a single-centre study	1
Assessment of Tp–Te interval in patients with cardiac AL amyloidosis	1
PRELP promotes myocardial fibrosis and ventricular remodelling after acute myocardial infarction by the wnt/β–catenin signalling pathway	1

Fatal pulmonary oedema associated with severe pre-eclampsia: challenges and lessons	1
MiR-126 prevents hypoxic HUVEC cellular injury through targeting TRAF6 expression	1