BACKGROUND Hypoparathyroidism is a rare disease that may occur due to primary or secondary etiologies.The estimated incidence in the United States is 24–37/100000 personyears.Congestive heart failure associated with ...BACKGROUND Hypoparathyroidism is a rare disease that may occur due to primary or secondary etiologies.The estimated incidence in the United States is 24–37/100000 personyears.Congestive heart failure associated with hypocalcemia due to hypoparathyroidism is an even rarer presentation.CASE SUMMARY Here,we present a 64-year-old woman with congestive heart failure following hypocalcemia.The patient was transferred to our emergency department with complaints of rapidly progressive dyspnea,shortness of breath and heaviness of the chest for 4 d.She had a history of undergoing thyroidectomy and partial tracheotomy 2 years prior due to a malignant thyroid tumor.Muscle spasms had been present 1 year ago,and cataracts were treated with intraocular lens replacement in both eyes.Most tests were within normal ranges,except serum calcium at 1.33 mmol/L(2.20–2.65 mmol/L),ionized calcium at 0.69 mmol/L(1.15–1.29 mmol/L),and parathyroid hormone at<1.0 pg/mL(12–88 pg/mL).Echocardiography revealed an ejection fraction of 28.48%.Cardiac function was quickly reversed by restoring the serum calcium concentration.Significant improvements were noted with an ejection fraction of up to 48.50%at follow-up.CONCLUSION For patients with potential hypocalcemia,monitoring calcium levels and dealing with hypocalcemia in time to avoid serious complications are important.展开更多
目的:利用无创腺苷激发经胸超声多普勒显像对卡维地洛治疗的扩张型心肌病心力衰竭病人冠脉血流储备(CFR)进行评价。方法:入选2004年6月至2005年6月因扩张型心肌病引起的慢性心力衰竭病人31例,在常规药物治疗基础上,加用卡维地洛至目标...目的:利用无创腺苷激发经胸超声多普勒显像对卡维地洛治疗的扩张型心肌病心力衰竭病人冠脉血流储备(CFR)进行评价。方法:入选2004年6月至2005年6月因扩张型心肌病引起的慢性心力衰竭病人31例,在常规药物治疗基础上,加用卡维地洛至目标剂量或最大耐受剂量,治疗6mo。在卡维地洛治疗前后进行腺苷激发经胸超声多普勒显像检查,记录冠脉血流速度(CFV)及冠脉血流速度储备(CFVR),以CFVR评价CFR。结果:卡维地洛治疗前心力衰竭病人静息状态CFV与对照组无显著差别(P>0.05),最大冠脉扩张状态时CFV减低(P<0.05),CFVR较对照组明显下降(2.4±s0.3vs 3.2±0.4, P<0.05);治疗6mo后心力衰竭病人静息状态下CFV无明显改变(P>0.05)、最大充血状态时CFV升高(P<0.05),CFVR增加(2.7±0.3 vs 3.2±0.4,P<0.05);治疗后心力衰竭组CFV及CFVR与对照组比较仍有显著差别。结论:非选择性β受体阻滞剂卡维地洛能够改善扩张型心肌病心力衰竭病人的冠脉CFR,这可能也是β受体阻滞剂有效治疗扩张型心肌病的作用机制之一。展开更多
There are two type of cardiac calcium channel current, both are inward current: (1) L-type Ca 2+ channel current(I ca-L ),plays a major role in determining myocyte action potential plateau characteristics as well as i...There are two type of cardiac calcium channel current, both are inward current: (1) L-type Ca 2+ channel current(I ca-L ),plays a major role in determining myocyte action potential plateau characteristics as well as initiating the myocyte excitation-contraction coupling; (2) T-type Ca 2+ channel current(I ca-T ), probably plays an important role in pacemaker activity. The alterations of L-type calcium channel abundance and function in cardiac hypertrophy and heart failure are determined by the the species difference, especially by the stage of the disease process and the degree of the disease. Both abundance and function of L-type calcium channel decrease in severe hypertrophy and heart failure.展开更多
基金National Key R&D Program of Chi na,No.2018YFF0301103.
文摘BACKGROUND Hypoparathyroidism is a rare disease that may occur due to primary or secondary etiologies.The estimated incidence in the United States is 24–37/100000 personyears.Congestive heart failure associated with hypocalcemia due to hypoparathyroidism is an even rarer presentation.CASE SUMMARY Here,we present a 64-year-old woman with congestive heart failure following hypocalcemia.The patient was transferred to our emergency department with complaints of rapidly progressive dyspnea,shortness of breath and heaviness of the chest for 4 d.She had a history of undergoing thyroidectomy and partial tracheotomy 2 years prior due to a malignant thyroid tumor.Muscle spasms had been present 1 year ago,and cataracts were treated with intraocular lens replacement in both eyes.Most tests were within normal ranges,except serum calcium at 1.33 mmol/L(2.20–2.65 mmol/L),ionized calcium at 0.69 mmol/L(1.15–1.29 mmol/L),and parathyroid hormone at<1.0 pg/mL(12–88 pg/mL).Echocardiography revealed an ejection fraction of 28.48%.Cardiac function was quickly reversed by restoring the serum calcium concentration.Significant improvements were noted with an ejection fraction of up to 48.50%at follow-up.CONCLUSION For patients with potential hypocalcemia,monitoring calcium levels and dealing with hypocalcemia in time to avoid serious complications are important.
文摘目的:利用无创腺苷激发经胸超声多普勒显像对卡维地洛治疗的扩张型心肌病心力衰竭病人冠脉血流储备(CFR)进行评价。方法:入选2004年6月至2005年6月因扩张型心肌病引起的慢性心力衰竭病人31例,在常规药物治疗基础上,加用卡维地洛至目标剂量或最大耐受剂量,治疗6mo。在卡维地洛治疗前后进行腺苷激发经胸超声多普勒显像检查,记录冠脉血流速度(CFV)及冠脉血流速度储备(CFVR),以CFVR评价CFR。结果:卡维地洛治疗前心力衰竭病人静息状态CFV与对照组无显著差别(P>0.05),最大冠脉扩张状态时CFV减低(P<0.05),CFVR较对照组明显下降(2.4±s0.3vs 3.2±0.4, P<0.05);治疗6mo后心力衰竭病人静息状态下CFV无明显改变(P>0.05)、最大充血状态时CFV升高(P<0.05),CFVR增加(2.7±0.3 vs 3.2±0.4,P<0.05);治疗后心力衰竭组CFV及CFVR与对照组比较仍有显著差别。结论:非选择性β受体阻滞剂卡维地洛能够改善扩张型心肌病心力衰竭病人的冠脉CFR,这可能也是β受体阻滞剂有效治疗扩张型心肌病的作用机制之一。
文摘There are two type of cardiac calcium channel current, both are inward current: (1) L-type Ca 2+ channel current(I ca-L ),plays a major role in determining myocyte action potential plateau characteristics as well as initiating the myocyte excitation-contraction coupling; (2) T-type Ca 2+ channel current(I ca-T ), probably plays an important role in pacemaker activity. The alterations of L-type calcium channel abundance and function in cardiac hypertrophy and heart failure are determined by the the species difference, especially by the stage of the disease process and the degree of the disease. Both abundance and function of L-type calcium channel decrease in severe hypertrophy and heart failure.
