Zohair Yousef Al-Halees

Dr. Zohair Yousef Al-Halees

orcid

Research Focus & Metrics

Academic Career Length

29Years (1998-Present)

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

Representative Publications

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1 August 2005 in European Journal of Cardio-Thoracic Surgery
Verified
Journal Article
Closed access
ZAZohair Yousef Al-Halees
Zohair Yousef Al-Halees
MSMaie Al Shahid
Maie Al Shahid
ASAly Al Sanei
Aly Al Sanei
ASAhmed Sallehuddin
Ahmed Sallehuddin
CDCarlos Duran
Carlos Duran
There is lack of information regarding the long-term behavior of aortic valve reconstruction with pericardium (AoR). A 16-year follow-up is reported here. Between 1988 and 1995, 92 consecutive patients had AoR with bovine (Group I, n=27) or glutaraldehyde-treated autologous pericardium (Group II, n=65). The mean age was 30 years (range 12-68). There were 65% males, 92% in sinus rhythm, 84% had rheumatic etiology and 36% had 'other valve' surgery. Mitral valve replacement with a mechanical prosthesis is a contraindication to the operation. Hospital mortality was 2%. The reconstructed aortic valve performed well with excellent hemodynamics. The mean follow-up interval was 10.5+/-4 years, range 9-16 years (longer for group I,12 versus 10 years) with 4% late deaths and seven patients lost to follow-up. Survival rate was 85+/-4%. There were no episodes of thromboembolism. Freedom from reoperation for the whole group was 68+/-5% at 10 years and 47+/-6% at 16 years. For group I, it was 68+/-9% at 10 years and 48+/-10% at 16 years, while for group II it was 72+/-6 and 45+/-8% at 10 and 15 years, respectively. Excluding endocarditis (one in group I and seven in group II) and 'other' reasons for reoperation (two in group I and three in group II), the freedom from structural valve degeneration (SVD) at 10 and 16 years was 78+/-1 and 55+/-10% for group I. For group II, it was 80+/-5% at 10 years and 58+/-9% at 15 years. The mean interval at which the valve degenerated was 8.8 years+/-3.6 and did not differ between the two groups. AoR is feasible with good hemodynamics, low mortality and thromboembolic rate. Its behavior at 10 years is comparable to that of stentless aortic valve bioprosthesis. It can be performed with either xenopericardium or glutaraldehyde-treated autologous pericardium, but the latter has the advantage of being inexpensive and readily available.

1 March 2002 in The Journal of Thoracic and Cardiovascular Surgery
Verified
Journal Article
Closed access
ZAZohair Yousef Al-Halees
Zohair Yousef Al-Halees
FPFrans Pieters
Frans Pieters
FQFatima Qadoura
Fatima Qadoura
MSMaie Shahid
Maie Shahid
MAMohammed Al-Amri
Mohammed Al-Amri
FAFadel Al-Fadley
Fadel Al-Fadley

22 January 2024 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
Domenico GalzeranoDomenico Galzerano
Domenico Galzerano
NKNaji Kholaif
Naji Kholaif
BABandar Alamro
Bandar Alamro
MAMohammed Al Admawi
Mohammed Al Admawi
AAAbdalla Abdalla Eltayeb Abdelkader
Abdalla Abdalla Eltayeb Abdelkader
ZAZohair Yousef Al-Halees
Zohair Yousef Al-Halees
The Ross procedure is gaining recognition as a significant option for aortic valve replacement (AVR), and is particularly beneficial in specific patient groups. Although categorized as a class IIb recommendation in the 2020 American College of Cardiology (ACC)/American Heart Association (AHA), and the European Society of Cardiology (ESC) management guidelines on valvular heart disease, recent studies bolster its credibility. Research, including a propensity-matched study, underlines the Ross procedure’s association with enhanced long-term survival and reduced adverse valve-related events compared to other AVR types. This positions the Ross procedure as a primary option for AVR in young and middle-aged adults within specialized centers, and potentially the only choice for children and infants requiring AVR. This review meticulously examines the Ross procedure, covering historical perspectives, surgical techniques, imaging, and outcomes, including hemodynamic performance and quality of life, especially focusing on pediatric and young adult patients. It explores contemporary techniques and innovations like minimally invasive approaches and tissue engineering, underscoring ongoing research and future directions. A summarization of comparative studies and meta-analyses reiterates the Ross procedure’s superior long-term outcomes, valve durability, and preservation of the left ventricular function, accentuating the crucial role of patient selection and risk stratification, and pinpointing areas for future research.

18 October 2022 in The Egyptian Heart Journal
Verified
Journal Article
Open access
PDF file
Mohamed Hassan LaimoudMohamed Hassan Laimoud
Mohamed Hassan Laimoud
MMMary Maghirang
Mary Maghirang
MAMosleh Alanazi
Mosleh Alanazi
SAShatha M. Al-Mutlaq
Shatha M. Al-Mutlaq
SASuha A. Althibait
Suha A. Althibait
ZAZohair Yousef Al-Halees
Zohair Yousef Al-Halees
Background: Despite the improved medical and surgical managements, still there is a significant risk of developing acute cerebrovascular strokes after coronary artery bypass grafting (CABG). Our objectives were to study the immediate and long-term outcomes after CABG and to identify the possible predictors of post-CABG strokes. Results: Between January 2016 and August 2020, 410 adult patients, mostly males (82.2%), were retrospectively enrolled after CABG. Acute postoperative strokes occurred in 31 (7.5%) patients; of them, 30 (96.8%) patients had ischemic stroke, while 1 (3.2%) had hemorrhagic stroke. Mechanical thrombectomy was done in two cases. The patients who developed acute cerebral stroke had significantly higher admission (p = 0.02) and follow-up (p < 0.001) SOFA scores, higher arterial blood lactate level (p < 0.001), longer hospitalization (p < 0.001) and more hospital mortality (p < 0.001) compared with the patients who did not develop stroke. Kaplan–Meier curves for 5-year mortality showed increased risk in those patients with postoperative stroke (HR: 23.03; 95% CI: 6.10–86.92, p < 0.001). After multivariate regression, the predictors of early postoperative stroke were carotid artery stenosis (CAS), postoperative atrial fibrillation, cardiopulmonary bypass time, prior cerebral stroke, admission SOFA score and chronic kidney disease (CKD). The predictors of late cerebrovascular stroke were CAS, combined CABG and valve surgery, CKD, atrial fibrillation, prior stroke and HbA1c. Conclusions: The development of post-CABG acute cerebrovascular stroke is associated with longer hospitalization, multiple morbidities and increased mortality. Careful assessment and management of risk factors especially atrial fibrillation and carotid artery stenosis should be implemented to decrease this substantial complication after CABG.

1 August 2001 in European Journal of Cardio-Thoracic Surgery
Verified
Journal Article
Open access
PDF file
ZAZohair Yousef Al-Halees
Zohair Yousef Al-Halees
BGBegonia Gometza
Begonia Gometza
ASAly Al Sanei
Aly Al Sanei
CDCarlos Duran
Carlos Duran
Objectives: The presence of moderate aortic valve (AV) lesions associated with other pathologies that require surgery presents a problem since ignoring or replacing the valve seems unsatisfactory. AV repair can be an attractive alternative if shown to perform satisfactory. Methods: To evaluate this possibility, all consecutive AV patients who underwent operation between July 1988 and July 1999 were reviewed. Out of 1764 AV patients, 239 (14%) underwent repair and 86 (study group) had moderate lesions associated with mitral (73), tricuspid (33), coronary disease (5) and others (8). Mean age was 28 years (range 2–66); 78% were rheumatic, 71% were in sinus rhythm and 71% in NYHA class III–IV. Results: There were seven hospital deaths (8%) and three patients were lost to follow-up (95% complete). Late mortality was 8% and 10-year actuarial survival was 86±4.5% (excluding hospital mortality). There were four (5%) embolic events (actuarial freedom 94±3.5%). Twenty-one patients required reoperation with two mortalities. The AV was not touched in five patients. In the remaining 16, the AV was replaced. Only one patient had isolated AV replacement while in all others, additionally, the mitral, tricuspid, or both required surgery. All reoperated patients had rheumatic etiology. Actuarial freedom from AV dysfunction at 8 years was 68±7.5%. Conclusions: Repair of associated moderate AV lesion is worth considering even in a predominantly young rheumatic population.

1 January 2023 in Critical Care Research and Practice
Verified
Journal Article
Open access
PDF file
Mohamed Hassan LaimoudMohamed Hassan Laimoud
Mohamed Hassan Laimoud
MAMosleh Nazzel Alanazi
Mosleh Nazzel Alanazi
MMMary Jane Maghirang
Mary Jane Maghirang
SAShatha Mohamed Al-Mutlaq
Shatha Mohamed Al-Mutlaq
SASuha Althibait
Suha Althibait
ZAZohair Yousef Al-Halees
Zohair Yousef Al-Halees
Background. Chronic kidney disease (CKD) is often associated with multiple comorbidities including diabetes mellitus, and each has its own complications and impact after cardiac surgery including coronary revascularization. The objective of this work was to study the impact of CKD on clinical outcomes after coronary artery bypass grafting (CABG) and to compare outcomes in patients with different grades of renal functions. We retrospectively reviewed all patients who underwent CABG from January 2016 to August 2020 at our tertiary care hospital using electronic medical records. Results. The study included 410 patients with a median age of 60 years, and 28.6% of them had CKD and hospital mortality of 2.7%. About 71.4% of the patients had GFR > 60 mL/min per 1.73 m2, 18.1% had early CKD (GFR 30–60), 2.7% had late CKD (GFR < 30), and 7.8% of them had end‐stage renal disease (ESRD) requiring dialysis. The CKD group had significantly more frequent hospital mortality (p = 0.04), acute cerebrovascular stroke (p = 0.03), acute kidney injury (AKI) (p < 0.001), longer ICU stay (p = 0.002), post‐ICU stay (p = 0.001), and sternotomy wound debridement (p = 0.03) compared to the non‐CKD group. The frequencies of new need for dialysis were 2.4% vs. 14.9% vs. 45.5% (p < 0.001) in the patients with GFR > 60 mL/min per 1.73 m2, early CKD, and late CKD, respectively. Acute cerebral stroke (OR: 10.29, 95% CI: 1.82–58.08, and p = 0.008), new need for dialysis (OR: 25.617, 95% CI: 13.78–85.47, and p < 0.001), and emergency surgery (OR: 3.1, 95% CI: 1.82–12.37, and p = 0.036) were the independent predictors of hospital mortality after CABG. The patients with CKD had an increased risk of strokes (HR: 2.14, 95% CI: 1.20–3.81, and p = 0.01) but insignificant mortality increase (HR: 1.44, 95% CI: 0.42–4.92, and p = 0.56) during follow‐up. Conclusion. The patients with CKD, especially the late grade, had worse postoperative early and late outcomes compared to non‐CKD patients after CABG. Patients with dialysis‐independent CKD had increased risks of needing dialysis, hospital mortality, and permanent dialysis after CABG.