Rajesh Rajan

Dr. Rajesh Rajan

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Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 February 2025 in Global Heart
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MRMahfuzur Rahman
Mahfuzur Rahman
MAMohammad Alatiqi
Mohammad Alatiqi
MJMohammed Al Jarallah
Mohammed Al Jarallah
MHMaryam Yousef Hussain
Maryam Yousef Hussain
AMAbdul Monayem
Abdul Monayem
RRRajesh Rajan
Rajesh Rajan
Smoking is a significant risk factor for both acute and chronic cardiovascular diseases. These diseases contribute to approximately twenty percent of all-cause mortality. Research indicates that quitting smoking can substantially reduce or even reverse the harmful effects associated with smoking on cardiovascular health. Notably, these benefits can be observed in a relatively short period compared to the duration of smoking history. This article aims to provide data to understand the effects of smoking on the cardiovascular system locally as well as its effects as a pandemic globally and hence provide comprehensive strategies in the management of cardiovascular patients for smoking cessation.

26 August 2021 in Immunity, Inflammation and Disease
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Journal Article
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MAMoudhi Alroomi
Moudhi Alroomi
RRRajesh Rajan
Rajesh Rajan
AOAbdulaziz A. Omar
Abdulaziz A. Omar
AAAhmad Alsaber
Ahmad Alsaber
JPJiazhu Pan
Jiazhu Pan
HAHassan Abdelnaby
Hassan Abdelnaby
Аbstrасt: Introduction: This study aims to investigate in‐hоsрitаl mоrtаlity in severe асute resрirаtоry syndrоme соrоnаvirus 2 раtients strаtified by serum ferritin levels.Methods: Patients were stratified based on ferritin levels (ferritin levels ≤ 1000 or >1000).Results: Approximately 89% (118) of the patients with ferritin levels > 1000 had pneumonia, and 51% (67) had hypertension. Fever (97, 73.5%) and shortness of breath (80, 61%) were two major symptoms among the patients in this group. Logistic regression analysis indicated that ferritin level (odds ratio [OR] = 0.36, 95% confidence interval [CI] = 0.21–0.62; p < .001), male sex (OR = 2.63, 95% CI = 1.43–5.06; p = .003), hypertension (OR = 4.16, 95% CI = 2.42–7.36; p < .001) and pneumonia (OR = 8.48, 95% CI = 3.02–35.45; p < .001) had significance in predicting in‐hospital mortality. Additionally, the Cox proportional hazards analysis and Kaplan–Meier survival probability plot showed a higher mortality rate among patients with ferritin levels > 1000.Conclusion: In this study, higher levels of serum ferritin were found to be an independent predictor of in‐hоsрitаl mоrtаlity.

12 October 2018 in ESC Heart Failure
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Journal Article
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MAMohammed Al-Jarallah
Mohammed Al-Jarallah
RRRajesh Rajan
Rajesh Rajan
IAIbrahim Al-Zakwani
Ibrahim Al-Zakwani
RDRaja Dashti
Raja Dashti
BBBassam Bulbanat
Bassam Bulbanat
HAHaitham Amin
Haitham Amin
Aims This study aims to evaluate the incidence and impact of cardiorenal anaemia syndrome (CRAS) on all‐cause mortality in acute heart failure (AHF) patients stratified by left ventricular ejection fraction (LVEF) status in the Middle East. Methods and results Data were analysed from 4934 consecutive patients admitted to 47 hospitals in seven Middle Eastern countries (Saudi Arabia, Oman, Yemen, Kuwait, United Arab Emirates, Qatar, and Bahrain) with AHF from February to November 2012. CRAS was defined as AHF with estimated glomerular filtration rate of <60 mL/min and low haemoglobin (<13 g/dL for men or <12 g/dL for women). Analyses were performed using univariate and multivariate statistical techniques. The overall mean age of the cohort was 59 ± 15 years, 62% (n = 3081) were men, and 27% (n = 1319) had CRAS. Co‐morbid conditions were common including hypertension (n = 3014; 61%), coronary artery disease (n = 2971; 60%), and diabetes mellitus (n = 2449; 50%). A total of 79% (n = 3576) of the patients had AHF with reduced ejection fraction (HFrEF) (LVEF < 50%). CRAS patients were associated with major bleeding (1.29% vs. 0.6%; P = 0.017), blood transfusion (10.1% vs. 3.0%; P < 0.001), higher re‐admission rate for AHF at 3 months' follow‐up (27.6% vs. 18.8%; P < 0.001) and at 12 months' follow‐up (34.3% vs. 26.2%; P < 0.001). Multivariate logistic regression demonstrated that patients with CRAS were associated with higher odds of all‐cause mortality during hospital admission [adjusted odds ratio (aOR), 2.10; 95% confidence interval (CI): 1.34–3.31; P = 0.001], at 3 months' follow‐up (aOR, 1.48; 95% CI: 1.07–2.06; P = 0.018), and at 12 months' follow‐up (aOR, 1.45; 95% CI: 1.12–1.87; P = 0.004). Stratified analyses showed that CRAS patients with HFrEF were associated with higher odds of all‐cause mortality during hospital admission (aOR, 2.03; 95% CI: 1.20–3.45; P = 0.009) and at 12 months' follow‐up (aOR, 1.42; 95% CI: 1.06–1.89; P = 0.019) but not at 3 months' follow‐up (aOR, 1.43; 95% CI: 0.98–2.09; P = 0.063). However, in AHF patients with preserved ejection fraction (LVEF ≥ 50%), CRAS was not associated with higher odds of all‐cause mortality not only during hospital admission (aOR, 2.15; 95% CI: 0.84–5.55; P = 0.113) but also at 3 months' follow‐up (aOR, 1.87; 95% CI: 0.93–3.76; P = 0.078) and at 12 months' follow‐up (aOR, 1.59; 95% CI: 0.91–2.76; P = 0.101). Conclusions The incidence of CRAS was 27%. CRAS was associated with higher odds of all‐cause mortality in AHF patients in the Middle East, especially in those with HFrEF.

7 June 2021 in Journal of Medical Virology
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MAMohammed Al‐Jarallah
Mohammed Al‐Jarallah
RRRajesh Rajan
Rajesh Rajan
RDRaja Dashti
Raja Dashti
AAAhmad Alsaber
Ahmad Alsaber
JPJiazhu Pan
Jiazhu Pan
MAMoudhi Alroomi
Moudhi Alroomi
This study is done to estimаte in‐hоsрitаl mоrtаlity in раtients with severe асute resрirаtоry syndrоme соrоnаvirus 2 (SАRS‐СоV‐2) strаtified by Vitamin‐D (Vit‐D) levels. Раtients were strаtified ассоrding tо by serum 25‐hydroxy‐vitamin D (25(OH)Vit‐D) levels intо twо grоuрs, that is, 25(OH)Vit‐D less thаn 40 nmol/L аnd 25(OH)Vit‐D greаter thаn 40 nmol/L. А tоtаl оf 231 раtients were inсluded. Оf these, 120 (50.2%) оf the раtients hаd 25(OH)Vit‐D levels greаter thаn 40 nmol/L. The meаn аge wаs 49 ± 17 yeаrs, аnd 67% оf the раtients were mаles. The mediаn length оf оverаll hоsрitаl stаy wаs 18 [6; 53] dаys. The remаining 119 (49.8%) раtients hаd а 25(OH)Vit‐D less thаn 40 nmol/L. Vitamin D levels were seen as deficient in 63% of patients, insufficient in 25% and normal in 12%. Оverаll mоrtаlity wаs 17 раtients (7.1%) but statistically not signifiсаnt among the grоuрs (p = 0.986). The Kарlаn–Meier survivаl аnаlysis shоwed no significance based on an alpha of 0.05, LL = 0.36, df = 1, p = 0.548, indicating Vitamin_D_Levels was not able to adequately predict the hazard of Mortality. In this study, serum 25(OH)Vit‐D levels were found have no significance in terms of predicting the in‐hоsрitаl mortality in раtients with SАRS‐СоV‐2.

28 May 2018 in Oman Medical Journal
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Journal Article
Open access
RRRajesh Rajan
Rajesh Rajan
MJMohammed Al Jarallah
Mohammed Al Jarallah

11 December 2019 in ESC Heart Failure
Verified
Journal Article
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MAMohammed Al-Jarallah
Mohammed Al-Jarallah
RRRajesh Rajan
Rajesh Rajan
IAIbrahim Al-Zakwani
Ibrahim Al-Zakwani
RDRaja Dashti
Raja Dashti
BBBassam Bulbanat
Bassam Bulbanat
HAHaitham Amin
Haitham Amin
Aims The aim of this study is to determine the impact of diabetes mellitus on all-cause mortality and rehospitalization rates at 3 months and at 1 year in patients admitted with acute heart failure (AHF) stratified by left ventricular ejection fraction (EF). Methods and results We analysed consecutive patients admitted to 47 hospitals in seven Middle Eastern countries (Saudi Arabia, Oman, Yemen, Kuwait, United Arab Emirates, Qatar, and Bahrain) with AHF from February to November 2012 with AHF who were enrolled in Gulf CARE, a multinational registry of patients with heart failure (HF). AHF patients were stratified into three groups: HF patients with reduced (EF) (HFrEF) (<40%), HF with mid-range EF (HFmrEF) (40–49%), and HF patients with preserved EF (HFpEF) (≥50%). Analyses were performed using univariate and multivariate statistical techniques. The mean age of the cohort was 59 ± 15 years (ranging from 18 to 99 years), and 63% (n = 2887) of the patients were males. A total of 2258 (49%) AHF patients had diabetes mellitus. The mean EF was 37 ± 14%. A reduced EF was observed in 2683 patients (59%), whereas 962 patients (21%) had mid-range and 932 patients (20%) had preserved EF. Multivariable analyses demonstrated no significant differences in all-cause mortality between diabetics and non-diabetics in all the three types of HF; at 3 months follow-up: HFrEF [adjusted odds ratio (aOR), 1.30; 95% confidence interval (CI): 0.94–1.80; P = 0.119], HFmrEF (aOR, 0.98; 95% CI: 0.51–1.87; P = 0.952), and HFpEF (aOR, 0.69; 95% CI: 0.38–1.26; P = 0.225); and at 12-months follow-up: HFrEF (aOR, 1.25; 95% CI: 0.97–1.62; P = 0.080), HFmrEF (aOR, 1.07; 95% CI: 0.68–1.68; P = 0.783), and HFpEF (aOR, 1.07; 95% CI: 0.67–1.72; P = 0.779). There were also no significant differences in rehospitalization rates between diabetics and non-diabetics in all the three types of HF; at 3 months follow-up: HFrEF (aOR, 0.94; 95% CI: 0.74–1.19; P = 0.581), HFmrEF (aOR, 0.82; 95% CI: 0.53–1.26; P = 0.369), and HFpEF (aOR, 1.06; 95% CI: 0.64–1.78; P = 0.812); and at 12-months follow-up: HFrEF (aOR, 0.93; 95% CI: 0.73–1.17; P = 0.524), HFmrEF (aOR, 0.81; 95% CI: 0.56–1.17; P = 0.257), and HFpEF (aOR, 1.29; 95% CI: 0.82–2.05; P = 0.271). Conclusions There were no significant differences in 3 and 12 months all-cause mortality as well as rehospitalization rates between diabetics and non-diabetic patients in all the three types of AHF patients stratified by left ventricular ejection fraction.