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John Wong - One of the best experts on this subject based on the ideXlab platform.

  • screening for asymptomatic Carotid stenosis in patients with peripheral vascular disease a prospective study and risk factor analysis
    Cardiovascular Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Screening for asymptomatic Carotid artery stenosis using color flow duplex scan was performed on 186 Chinese patients with peripheral vascular disease. They consist of 121 male and 65 females, with a mean age of 70.6 years. A Carotid Bruit was present in 43 (23.1%) of the patients. Internal Carotid artery stenosis of 70% or greater was detected in 46 patients (24.7%) including six total occlusions. Another 79 patients (42.5%) had internal Carotid artery stenosis in the 30–69% range. Significant internal Carotid artery stenosis was associated with age, male sex, the quantity and duration of smoking and a Carotid Bruit; and inversely with cholesterol, triglyceride and VLDL. Age, the number of cigarettes consumed per day, and Carotid Bruit were independent significant predictors of ≥70% internal Carotid artery stenosis on logistic regression analysis. The degree of internal Carotid artery stenosis is more severe in patients with a Carotid Bruit, and correlated positively with age (P<0.01), the number of cigarettes smoked (P=0.04), and the duration of smoking (P=0.03). Multiple linear regression analysis showed that only the age of the patient bears a significant relationship with the degree of internal Carotid artery stenosis (P<0.01). There was no relationship between the degree of lower limb ischemia with Carotid stenosis. The prevalence of ≥70% internal Carotid artery stenosis in a high risk population with peripheral vascular disease was 24.7%. Routine duplex screening is worthwhile in this group of patients, particularly in male, elderly smokers.

  • prevalence of significant Carotid stenosis in chinese patients with peripheral and coronary artery disease
    Australian and New Zealand Journal of Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Background: The prevalence of extracranial Carotid stenosis in the Chinese population is not known. This study aims to investigate and compare Carotid disease in several groups of high-risk patients. Method: Routine screening Carotid duplex scans were performed on high-risk Chinese patients without cerebrovascular symptoms. These consisted of 249 patients with peripheral vascular disease, 207 patients with coronary artery disease, and 45 patients with abdominal aortic aneurysm. In addition, 220 patients with cerebrovascular symptoms and 58 patients with Carotid Bruits were scanned. A group of 108 healthy individuals was included as a control. The data of all 887 subjects were analysed. Results: Carotid stenosis of 70% or greater was detected in 37.7% of patients in the cerebrovascular disease group and 24.5% of patients with peripheral arterial disease; it was higher than in patients with coronary artery disease (11.1%), asymptomatic Carotid Bruit (10.3%) and aortic aneurysms (8.9%; P < 0.001). No significant disease was found in the controls. Patients with cerebrovascular disease have more severe degrees of Carotid stenosis and significantly more total occlusions. Smoking, age and male sex were the main risk factors for high-grade (≥ 70%) Carotid stenosis. Conclusion: The prevalence of extracranial Carotid stenosis in Chinese patients is not low. Patients with peripheral arterial disease have the highest risk of significant Carotid stenosis: routine Carotid duplex screening in these patients is recommended.

Stephen W.k. Cheng - One of the best experts on this subject based on the ideXlab platform.

  • screening for asymptomatic Carotid stenosis in patients with peripheral vascular disease a prospective study and risk factor analysis
    Cardiovascular Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Screening for asymptomatic Carotid artery stenosis using color flow duplex scan was performed on 186 Chinese patients with peripheral vascular disease. They consist of 121 male and 65 females, with a mean age of 70.6 years. A Carotid Bruit was present in 43 (23.1%) of the patients. Internal Carotid artery stenosis of 70% or greater was detected in 46 patients (24.7%) including six total occlusions. Another 79 patients (42.5%) had internal Carotid artery stenosis in the 30–69% range. Significant internal Carotid artery stenosis was associated with age, male sex, the quantity and duration of smoking and a Carotid Bruit; and inversely with cholesterol, triglyceride and VLDL. Age, the number of cigarettes consumed per day, and Carotid Bruit were independent significant predictors of ≥70% internal Carotid artery stenosis on logistic regression analysis. The degree of internal Carotid artery stenosis is more severe in patients with a Carotid Bruit, and correlated positively with age (P<0.01), the number of cigarettes smoked (P=0.04), and the duration of smoking (P=0.03). Multiple linear regression analysis showed that only the age of the patient bears a significant relationship with the degree of internal Carotid artery stenosis (P<0.01). There was no relationship between the degree of lower limb ischemia with Carotid stenosis. The prevalence of ≥70% internal Carotid artery stenosis in a high risk population with peripheral vascular disease was 24.7%. Routine duplex screening is worthwhile in this group of patients, particularly in male, elderly smokers.

  • prevalence of significant Carotid stenosis in chinese patients with peripheral and coronary artery disease
    Australian and New Zealand Journal of Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Background: The prevalence of extracranial Carotid stenosis in the Chinese population is not known. This study aims to investigate and compare Carotid disease in several groups of high-risk patients. Method: Routine screening Carotid duplex scans were performed on high-risk Chinese patients without cerebrovascular symptoms. These consisted of 249 patients with peripheral vascular disease, 207 patients with coronary artery disease, and 45 patients with abdominal aortic aneurysm. In addition, 220 patients with cerebrovascular symptoms and 58 patients with Carotid Bruits were scanned. A group of 108 healthy individuals was included as a control. The data of all 887 subjects were analysed. Results: Carotid stenosis of 70% or greater was detected in 37.7% of patients in the cerebrovascular disease group and 24.5% of patients with peripheral arterial disease; it was higher than in patients with coronary artery disease (11.1%), asymptomatic Carotid Bruit (10.3%) and aortic aneurysms (8.9%; P < 0.001). No significant disease was found in the controls. Patients with cerebrovascular disease have more severe degrees of Carotid stenosis and significantly more total occlusions. Smoking, age and male sex were the main risk factors for high-grade (≥ 70%) Carotid stenosis. Conclusion: The prevalence of extracranial Carotid stenosis in Chinese patients is not low. Patients with peripheral arterial disease have the highest risk of significant Carotid stenosis: routine Carotid duplex screening in these patients is recommended.

Lisa Lh Wu - One of the best experts on this subject based on the ideXlab platform.

  • screening for asymptomatic Carotid stenosis in patients with peripheral vascular disease a prospective study and risk factor analysis
    Cardiovascular Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Screening for asymptomatic Carotid artery stenosis using color flow duplex scan was performed on 186 Chinese patients with peripheral vascular disease. They consist of 121 male and 65 females, with a mean age of 70.6 years. A Carotid Bruit was present in 43 (23.1%) of the patients. Internal Carotid artery stenosis of 70% or greater was detected in 46 patients (24.7%) including six total occlusions. Another 79 patients (42.5%) had internal Carotid artery stenosis in the 30–69% range. Significant internal Carotid artery stenosis was associated with age, male sex, the quantity and duration of smoking and a Carotid Bruit; and inversely with cholesterol, triglyceride and VLDL. Age, the number of cigarettes consumed per day, and Carotid Bruit were independent significant predictors of ≥70% internal Carotid artery stenosis on logistic regression analysis. The degree of internal Carotid artery stenosis is more severe in patients with a Carotid Bruit, and correlated positively with age (P<0.01), the number of cigarettes smoked (P=0.04), and the duration of smoking (P=0.03). Multiple linear regression analysis showed that only the age of the patient bears a significant relationship with the degree of internal Carotid artery stenosis (P<0.01). There was no relationship between the degree of lower limb ischemia with Carotid stenosis. The prevalence of ≥70% internal Carotid artery stenosis in a high risk population with peripheral vascular disease was 24.7%. Routine duplex screening is worthwhile in this group of patients, particularly in male, elderly smokers.

  • prevalence of significant Carotid stenosis in chinese patients with peripheral and coronary artery disease
    Australian and New Zealand Journal of Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Background: The prevalence of extracranial Carotid stenosis in the Chinese population is not known. This study aims to investigate and compare Carotid disease in several groups of high-risk patients. Method: Routine screening Carotid duplex scans were performed on high-risk Chinese patients without cerebrovascular symptoms. These consisted of 249 patients with peripheral vascular disease, 207 patients with coronary artery disease, and 45 patients with abdominal aortic aneurysm. In addition, 220 patients with cerebrovascular symptoms and 58 patients with Carotid Bruits were scanned. A group of 108 healthy individuals was included as a control. The data of all 887 subjects were analysed. Results: Carotid stenosis of 70% or greater was detected in 37.7% of patients in the cerebrovascular disease group and 24.5% of patients with peripheral arterial disease; it was higher than in patients with coronary artery disease (11.1%), asymptomatic Carotid Bruit (10.3%) and aortic aneurysms (8.9%; P < 0.001). No significant disease was found in the controls. Patients with cerebrovascular disease have more severe degrees of Carotid stenosis and significantly more total occlusions. Smoking, age and male sex were the main risk factors for high-grade (≥ 70%) Carotid stenosis. Conclusion: The prevalence of extracranial Carotid stenosis in Chinese patients is not low. Patients with peripheral arterial disease have the highest risk of significant Carotid stenosis: routine Carotid duplex screening in these patients is recommended.

Albert Chiwai Ting - One of the best experts on this subject based on the ideXlab platform.

  • screening for asymptomatic Carotid stenosis in patients with peripheral vascular disease a prospective study and risk factor analysis
    Cardiovascular Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Screening for asymptomatic Carotid artery stenosis using color flow duplex scan was performed on 186 Chinese patients with peripheral vascular disease. They consist of 121 male and 65 females, with a mean age of 70.6 years. A Carotid Bruit was present in 43 (23.1%) of the patients. Internal Carotid artery stenosis of 70% or greater was detected in 46 patients (24.7%) including six total occlusions. Another 79 patients (42.5%) had internal Carotid artery stenosis in the 30–69% range. Significant internal Carotid artery stenosis was associated with age, male sex, the quantity and duration of smoking and a Carotid Bruit; and inversely with cholesterol, triglyceride and VLDL. Age, the number of cigarettes consumed per day, and Carotid Bruit were independent significant predictors of ≥70% internal Carotid artery stenosis on logistic regression analysis. The degree of internal Carotid artery stenosis is more severe in patients with a Carotid Bruit, and correlated positively with age (P<0.01), the number of cigarettes smoked (P=0.04), and the duration of smoking (P=0.03). Multiple linear regression analysis showed that only the age of the patient bears a significant relationship with the degree of internal Carotid artery stenosis (P<0.01). There was no relationship between the degree of lower limb ischemia with Carotid stenosis. The prevalence of ≥70% internal Carotid artery stenosis in a high risk population with peripheral vascular disease was 24.7%. Routine duplex screening is worthwhile in this group of patients, particularly in male, elderly smokers.

  • prevalence of significant Carotid stenosis in chinese patients with peripheral and coronary artery disease
    Australian and New Zealand Journal of Surgery, 1999
    Co-Authors: Stephen W.k. Cheng, Lisa Lh Wu, Albert Chiwai Ting, John Wong
    Abstract:

    Background: The prevalence of extracranial Carotid stenosis in the Chinese population is not known. This study aims to investigate and compare Carotid disease in several groups of high-risk patients. Method: Routine screening Carotid duplex scans were performed on high-risk Chinese patients without cerebrovascular symptoms. These consisted of 249 patients with peripheral vascular disease, 207 patients with coronary artery disease, and 45 patients with abdominal aortic aneurysm. In addition, 220 patients with cerebrovascular symptoms and 58 patients with Carotid Bruits were scanned. A group of 108 healthy individuals was included as a control. The data of all 887 subjects were analysed. Results: Carotid stenosis of 70% or greater was detected in 37.7% of patients in the cerebrovascular disease group and 24.5% of patients with peripheral arterial disease; it was higher than in patients with coronary artery disease (11.1%), asymptomatic Carotid Bruit (10.3%) and aortic aneurysms (8.9%; P < 0.001). No significant disease was found in the controls. Patients with cerebrovascular disease have more severe degrees of Carotid stenosis and significantly more total occlusions. Smoking, age and male sex were the main risk factors for high-grade (≥ 70%) Carotid stenosis. Conclusion: The prevalence of extracranial Carotid stenosis in Chinese patients is not low. Patients with peripheral arterial disease have the highest risk of significant Carotid stenosis: routine Carotid duplex screening in these patients is recommended.

Hock Luen Teoh - One of the best experts on this subject based on the ideXlab platform.

  • external Carotid artery internal jugular vein fistula a complication of internal jugular cannulation
    Circulation, 2006
    Co-Authors: Vijay K Sharma, Ashok W Pereira, Benjamin K C Ong, Rahul Rathakrishnan, Bernard P L Chan, Hock Luen Teoh
    Abstract:

    A 75-year-old female patient was admitted to our hospital after an episode of transient right-sided weakness. Her medical history was significant for ischemic heart disease, with coronary artery bypass grafting having been performed 4 years previously. She had experienced progressive dyspnea and decreased effort tolerance in the preceding 2 years, with 2 admissions due to congestive heart failure in the past year despite medical treatment. The physical examination was remarkable for a raised jugular venous pressure on the right side, bilateral ankle edema, and basal crackles in the lungs. A right Carotid Bruit was heard on auscultation during systole, although no thrill was …