Background: Chronic heart failure is a public health problem worldwide. It has a high mortality rate and is accompanied by a decreased functional capacity and alteration of the quality of life. Objective: This st...Background: Chronic heart failure is a public health problem worldwide. It has a high mortality rate and is accompanied by a decreased functional capacity and alteration of the quality of life. Objective: This study aimed to assess the cardiovascular functional capacity of a group of patients suffering from heart failure using the 6-minute walk test (6 MWT). Methods: This was a cross-sectional study carried out in the cardiology unit of Douala’s general hospital for 4 months. We included all eligible patients aged 18 years or more who had stable chronic heart failure and gave informed consent. Those who had an acute coronary syndrome (≤1 month), tachycardia (HR ≥ 120 bpm), high blood pressure (SBP ≥ 180 mmHg and/or DBP ≥ 100 mmHg) and reduced mobility due to orthopaedic reasons were excluded. A 6 MWT was done according to the American Thoracic Society guidelines. The 6 MWT result was considered poor for - 450 m and good for >450 m. Results: We recruited a total of 81 patients (61.7% women) with a mean age of 65.9 ± 10.6 years. The most frequent risk factor for heart failure was high blood pressure (77.8%), alcohol consumption(69.1%) and a sedentary lifestyle (53.1%). The left ventricular ejection fraction was mostly preserved (42.0%) or mildly altered (46.9). The 6 MWT results were poor in 55.6% of cases, average in 19.8% of cases and good in only 24.7% of cases. More than half (59.3%) of the participants perceived the effort as being difficult. The cardiovascular functional capacity was significantly associated with age, heart failure stage and physical activity (p Conclusion: Most patients suffering from chronic stable heart failure in the general hospital of Douala have poor cardiovascular functional capacity.展开更多
Objective: To investigate the clinical value of QT dispersion (QTd) and the effects of 6-minute walk test (6-MWT) mimicking the patients' daily activities on QTd in patients with congestive heart failure (CHF).Met...Objective: To investigate the clinical value of QT dispersion (QTd) and the effects of 6-minute walk test (6-MWT) mimicking the patients' daily activities on QTd in patients with congestive heart failure (CHF).Methods: Twenty-eight CHF patients and 22 normal subjects participated these study, who all completed 6-MWT without developing severe arrhythmias.Before and after 6-MWT, standardized 12-lead surface ECGs were obtained to measure QTd and corrected QTd (QTcd).Results: Both before and after 6-MWT, the QTd and QTcd in CHF patients were longer than those in the controls (P<0.001), and QTd and QTcd after 6-MWT were significantly shorter than those before 6-MWT in CHF patients (P=0.007, and 0.018).There was no significant difference in the measurement in the control group.Conclusion: QTd and QTcd are longer in CHF patients than in normal subjects.Moderate exercise may improve the inhomogeneity of ventricular repolarization dispersion in CHF patients.展开更多
The 6 minute walk test (6MWT) is well established in the clinical assessment of heart failure, pulmonary hypertension and COPD. Its value as a submaximal stress test in the risk stratification of chronic stable ischae...The 6 minute walk test (6MWT) is well established in the clinical assessment of heart failure, pulmonary hypertension and COPD. Its value as a submaximal stress test in the risk stratification of chronic stable ischaemic syndromes is as yet not validated. 95 patients undergoing coronary angiography for assessment of chronic stable angina performed the 6MWT according to a modified protocol. The gamma correlation test indicated a moderately significant relationship between ECG changes plus symptoms at the end of the 6MWT and multi vessel coronary arterial disease. The T wave changes showed no significant correlation. Hence the 6MWT is a useful tool in the risk stratification of stable ischaemic syndromes which can be safely performed in a general ward prior to hospital discharge. It would be a useful preliminary test before planning a programme of cardiac rehabilitation.展开更多
Background: The 6-minute walk test (6TC) was initially used as an instrument for assessing physical and cardiorespiratory capacity, but is currently being used to monitor treatments, and compare physical interventions...Background: The 6-minute walk test (6TC) was initially used as an instrument for assessing physical and cardiorespiratory capacity, but is currently being used to monitor treatments, and compare physical interventions and prognostic evaluation. Although already recognized as a research method in several specialties, 6TC has not been used in rheumatology. Patients with rheumatoid arthritis (RA) may have impaired functional capacity as well as increased cardiovascular mortality. An adequate functional evaluation of these patients is necessary and the 6TC may be useful in this sense. Objective: The aim of this study was to perform the 6-minute walk test in RA patients and to compare the performance with a control group. Method: A cross-sectional study was carried out in which the sample consisted of 85 women, 46 patients with rheumatoid arthritis and 39 healthy controls. A descriptive analysis of the data was performed. One-Way ANOVA methodology was used to compare the patient and control groups followed by the graphic analysis. Results: The distance walked on the 6TC by RA patients was on average 522.2 meters. In the distance control group found in the 6TC was on average 628.8 meters, the difference being statistically significant. Conclusion: In this study the distance covered in 6TC by women with RA was lower than that of healthy women of the same age.展开更多
目的观察以智能化6分钟步行试验为指导制定的个体化运动方案对老年糖尿病患者的影响。方法选取2022年6月-12月于某市三甲医院就诊的老年糖尿病患者95例,将其随机分为观察组49例与对照组46例。对照组每周进行中等强度的运动150 min以上,...目的观察以智能化6分钟步行试验为指导制定的个体化运动方案对老年糖尿病患者的影响。方法选取2022年6月-12月于某市三甲医院就诊的老年糖尿病患者95例,将其随机分为观察组49例与对照组46例。对照组每周进行中等强度的运动150 min以上,观察组基于智能化6分钟步行试验结果制定个体化的运动处方指导运动。比较干预前及干预12周后2组空腹血糖、总胆固醇、三酰甘油、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇水平,糖化血红蛋白和体质指数(body mass index,BMI)。结果干预12周后,观察组BMI、总胆固醇、三酰甘油、空腹血糖、糖化血红蛋白均低于对照组(t=2.327,P=0.022;t=2.134,P=0.035;t=2.480,P=0.015;t=2.295,P=0.024;t=2.050,P=0.043)。结论以智能化6分钟步行试验为指导制定的个体化运动方案,能有效降低老年糖尿病患者的糖脂代谢指标和BMI。展开更多
Introduction: Although many cardiopulmonary patients require home care services, the 6-minute walk test (6MWT) is unusable in most dwellings for objectively evaluating exercise capacity because it requires a 20 - 30 m...Introduction: Although many cardiopulmonary patients require home care services, the 6-minute walk test (6MWT) is unusable in most dwellings for objectively evaluating exercise capacity because it requires a 20 - 30 meter hallway. To meet this need, we developed a 2-minute step test (2MST): stepping up and down an 8 inch step for 2 minutes (1 step = bilateral step up + step down). Purpose: Evaluate the statistical validity, reproducibility, and sensitivity of the 2MST in assessing exercise capacity. Method: We compared the heart rate, oxygen saturation and perceived exertion obtained during performance of 2MST with those obtained during the 6MWT. Results: Comparing 2MST and 6MWT in 158 subjects for validity, r = 0.925 (P Conclusion: The 2MST is valid, reproducible, sensitive, safe, well-tolerated, and is a suitable substitute for the 6MWT.展开更多
Background The relationship between the 6-minute walk test （6MWT） and pulmonary function test in stable chronic obstructive pulmonary disease （COPD） remains unclear. We evaluate the correlation of 6MWT and spirome...Background The relationship between the 6-minute walk test （6MWT） and pulmonary function test in stable chronic obstructive pulmonary disease （COPD） remains unclear. We evaluate the correlation of 6MWT and spirometric parameters in stable COPD with different severities. 6MWT data assessed included three variables： the 6-minute walk distance （6MWD）, 6-minute walk work （6MWORK）, and pulse oxygen desaturation rate （SPO2%）. Methods 6MWT and pulmonary function test were assessed for 150 stable COPD patients with different severities. Means and standard deviations were calculated for the variables of interest. Analysis of variance was performed to compare means. Correlation coefficients were calculated for 6MWT data with the spirometric parameters and dyspnea Borg scale. Multiple stepwise regression analysis was used to screen pulmonary function-related predictors of 6MWT data. Results The three variables of 6MWT all varied as the severities of the disease. The 6MWD and 6MWORK both correlated with some spirometric parameters （positive or negative correlation; the absolute value of r ranging from 0.34 to 0.67; P 〈0.05） in severe and very severe patients, and the SPO2% correlated with the dyspnea Borg scale in four severities （t= -0.33, -0.34, -0.39, -0.53 respectively; P 〈0.05）. The 6MWD was correlated with the 6MWORK in four severities （r=0.56, 0.57, 0.72, 0.81 respectively, P 〈0.05）, and neither of them correlated with the SPO2%. The percent of predicted forced expiratory volume in 1 second （FEV1% predicted） and residual volume to total lung capacity ratio （RV/TLC） were predictors of the 6MWD, and the maximum voluntary ventilation （MW） was the predictor of the 6MWORK. Conclusions 6MWT correlated with the spirometric parameters in severe and very severe COPD patients. 6MWT may be used to monitor changes of pulmonary function in these patients.展开更多
文摘Background: Chronic heart failure is a public health problem worldwide. It has a high mortality rate and is accompanied by a decreased functional capacity and alteration of the quality of life. Objective: This study aimed to assess the cardiovascular functional capacity of a group of patients suffering from heart failure using the 6-minute walk test (6 MWT). Methods: This was a cross-sectional study carried out in the cardiology unit of Douala’s general hospital for 4 months. We included all eligible patients aged 18 years or more who had stable chronic heart failure and gave informed consent. Those who had an acute coronary syndrome (≤1 month), tachycardia (HR ≥ 120 bpm), high blood pressure (SBP ≥ 180 mmHg and/or DBP ≥ 100 mmHg) and reduced mobility due to orthopaedic reasons were excluded. A 6 MWT was done according to the American Thoracic Society guidelines. The 6 MWT result was considered poor for - 450 m and good for >450 m. Results: We recruited a total of 81 patients (61.7% women) with a mean age of 65.9 ± 10.6 years. The most frequent risk factor for heart failure was high blood pressure (77.8%), alcohol consumption(69.1%) and a sedentary lifestyle (53.1%). The left ventricular ejection fraction was mostly preserved (42.0%) or mildly altered (46.9). The 6 MWT results were poor in 55.6% of cases, average in 19.8% of cases and good in only 24.7% of cases. More than half (59.3%) of the participants perceived the effort as being difficult. The cardiovascular functional capacity was significantly associated with age, heart failure stage and physical activity (p Conclusion: Most patients suffering from chronic stable heart failure in the general hospital of Douala have poor cardiovascular functional capacity.
文摘Objective: To investigate the clinical value of QT dispersion (QTd) and the effects of 6-minute walk test (6-MWT) mimicking the patients' daily activities on QTd in patients with congestive heart failure (CHF).Methods: Twenty-eight CHF patients and 22 normal subjects participated these study, who all completed 6-MWT without developing severe arrhythmias.Before and after 6-MWT, standardized 12-lead surface ECGs were obtained to measure QTd and corrected QTd (QTcd).Results: Both before and after 6-MWT, the QTd and QTcd in CHF patients were longer than those in the controls (P<0.001), and QTd and QTcd after 6-MWT were significantly shorter than those before 6-MWT in CHF patients (P=0.007, and 0.018).There was no significant difference in the measurement in the control group.Conclusion: QTd and QTcd are longer in CHF patients than in normal subjects.Moderate exercise may improve the inhomogeneity of ventricular repolarization dispersion in CHF patients.
文摘The 6 minute walk test (6MWT) is well established in the clinical assessment of heart failure, pulmonary hypertension and COPD. Its value as a submaximal stress test in the risk stratification of chronic stable ischaemic syndromes is as yet not validated. 95 patients undergoing coronary angiography for assessment of chronic stable angina performed the 6MWT according to a modified protocol. The gamma correlation test indicated a moderately significant relationship between ECG changes plus symptoms at the end of the 6MWT and multi vessel coronary arterial disease. The T wave changes showed no significant correlation. Hence the 6MWT is a useful tool in the risk stratification of stable ischaemic syndromes which can be safely performed in a general ward prior to hospital discharge. It would be a useful preliminary test before planning a programme of cardiac rehabilitation.
文摘Background: The 6-minute walk test (6TC) was initially used as an instrument for assessing physical and cardiorespiratory capacity, but is currently being used to monitor treatments, and compare physical interventions and prognostic evaluation. Although already recognized as a research method in several specialties, 6TC has not been used in rheumatology. Patients with rheumatoid arthritis (RA) may have impaired functional capacity as well as increased cardiovascular mortality. An adequate functional evaluation of these patients is necessary and the 6TC may be useful in this sense. Objective: The aim of this study was to perform the 6-minute walk test in RA patients and to compare the performance with a control group. Method: A cross-sectional study was carried out in which the sample consisted of 85 women, 46 patients with rheumatoid arthritis and 39 healthy controls. A descriptive analysis of the data was performed. One-Way ANOVA methodology was used to compare the patient and control groups followed by the graphic analysis. Results: The distance walked on the 6TC by RA patients was on average 522.2 meters. In the distance control group found in the 6TC was on average 628.8 meters, the difference being statistically significant. Conclusion: In this study the distance covered in 6TC by women with RA was lower than that of healthy women of the same age.
文摘目的观察以智能化6分钟步行试验为指导制定的个体化运动方案对老年糖尿病患者的影响。方法选取2022年6月-12月于某市三甲医院就诊的老年糖尿病患者95例,将其随机分为观察组49例与对照组46例。对照组每周进行中等强度的运动150 min以上,观察组基于智能化6分钟步行试验结果制定个体化的运动处方指导运动。比较干预前及干预12周后2组空腹血糖、总胆固醇、三酰甘油、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇水平,糖化血红蛋白和体质指数(body mass index,BMI)。结果干预12周后,观察组BMI、总胆固醇、三酰甘油、空腹血糖、糖化血红蛋白均低于对照组(t=2.327,P=0.022;t=2.134,P=0.035;t=2.480,P=0.015;t=2.295,P=0.024;t=2.050,P=0.043)。结论以智能化6分钟步行试验为指导制定的个体化运动方案,能有效降低老年糖尿病患者的糖脂代谢指标和BMI。
文摘Introduction: Although many cardiopulmonary patients require home care services, the 6-minute walk test (6MWT) is unusable in most dwellings for objectively evaluating exercise capacity because it requires a 20 - 30 meter hallway. To meet this need, we developed a 2-minute step test (2MST): stepping up and down an 8 inch step for 2 minutes (1 step = bilateral step up + step down). Purpose: Evaluate the statistical validity, reproducibility, and sensitivity of the 2MST in assessing exercise capacity. Method: We compared the heart rate, oxygen saturation and perceived exertion obtained during performance of 2MST with those obtained during the 6MWT. Results: Comparing 2MST and 6MWT in 158 subjects for validity, r = 0.925 (P Conclusion: The 2MST is valid, reproducible, sensitive, safe, well-tolerated, and is a suitable substitute for the 6MWT.
文摘Background The relationship between the 6-minute walk test （6MWT） and pulmonary function test in stable chronic obstructive pulmonary disease （COPD） remains unclear. We evaluate the correlation of 6MWT and spirometric parameters in stable COPD with different severities. 6MWT data assessed included three variables： the 6-minute walk distance （6MWD）, 6-minute walk work （6MWORK）, and pulse oxygen desaturation rate （SPO2%）. Methods 6MWT and pulmonary function test were assessed for 150 stable COPD patients with different severities. Means and standard deviations were calculated for the variables of interest. Analysis of variance was performed to compare means. Correlation coefficients were calculated for 6MWT data with the spirometric parameters and dyspnea Borg scale. Multiple stepwise regression analysis was used to screen pulmonary function-related predictors of 6MWT data. Results The three variables of 6MWT all varied as the severities of the disease. The 6MWD and 6MWORK both correlated with some spirometric parameters （positive or negative correlation; the absolute value of r ranging from 0.34 to 0.67; P 〈0.05） in severe and very severe patients, and the SPO2% correlated with the dyspnea Borg scale in four severities （t= -0.33, -0.34, -0.39, -0.53 respectively; P 〈0.05）. The 6MWD was correlated with the 6MWORK in four severities （r=0.56, 0.57, 0.72, 0.81 respectively, P 〈0.05）, and neither of them correlated with the SPO2%. The percent of predicted forced expiratory volume in 1 second （FEV1% predicted） and residual volume to total lung capacity ratio （RV/TLC） were predictors of the 6MWD, and the maximum voluntary ventilation （MW） was the predictor of the 6MWORK. Conclusions 6MWT correlated with the spirometric parameters in severe and very severe COPD patients. 6MWT may be used to monitor changes of pulmonary function in these patients.
