Research on heart function in pregnant women with sinus tachycardia evaluated with echocardiography / 中国医师进修杂志

Objective To investigate the characteristic and clinical value of echocardiography in pregnant women with sinus tachycardia.Methods Thirty pregnant women with sinus tachycardia (experiment group) and 30 healthy pregnant women (control group) were selected.The echocardiography results and clinical data were compared between the 2 groups.Results There were no statistical differences in age,gestational age,blood pressure,weight between the 2 groups (P ＞ 0.05).The heart rate in experiment group was significantly higher than that in control group [(123.20 ± 13.23) times/min vs.(86.17 ± 6.78) times/min],there was statistical difference (P ＜ 0.01).The left ventricular posterior wall thickness and the rates of mitral regurgitation,tricuspid regurgitation,aortic regurgitation in experiment group were significantly higher than those in control group [(10.23 ± 1.30) mm vs.(8.79 ± 1.90) mm,63.33％ (19/30) vs.16.67％ (5/30),66.67％(20/30) vs.30.00％(9/30),26.67％(8/30) vs.6.67％(2/30)],the left ventricular posterior wall motion amplitude was significantly lower than that in control group [(8.07 ± 1.00) mm vs.(9.26 ± 1.71) mm],there were statistical differences (P ＜ 0.01 or ＜ 0.05).There were statistical differences in the indexes of left ventricular systolic function and diastolic function between the 2 groups (P ＜0.01 or ＜0.05).Conclusion The anatomical indexes and function indexes of echocardiography in pregnant women with sinus tachycardia are used to change,and the echocardiography in time can provide the basis of treatment.

Taquicardia sinusal inapropriada: o papel da ecocardiografia fetal transvaginal: relato de caso / Inappropriate sinus tachycardia: the role of trasvaginal fetal echocardiography: case report / Taquicardia Sinusal Inapropiada: El papel de la Ecocardiografía Fetal Transvaginal ­ Relato del Caso

Introdução: A taquicardia sinusal inapropriada é rara na população em geral, tem maior prevalência em mulheres jovens e sua etiologia é desconhecida. Caracteriza-se por uma frequência cardíaca, persistentemente, elevada com uma resposta exagerada à atividade física. Objetivo: Relatar um caso raro de taquicardia sinusal inapropriada em fase precoce da gestação, enfatizando a importância da ecocardiografia fetal transvaginal. Relato de caso: Gestante encaminhada para realização de ecocardiografia transvaginal por taquicardia fetal persistente. Ao exame de nove semanas, o feto apresentava uma FC de 240 batimentos por minuto (bpm), com condução atrioventricular de um para um e sem sinais de hidropisia. Utilizados a digoxina e, posteriormente, o flecainide, ambos sem sucesso terapêutico. Iniciado sotatol com redução gradual e posterior normalização da FC fetal. O parto ocorreu a termo, concepto nasceu bem e evoluiu com taquicardia persistente. O eletrocardiograma realizado demonstrou onda P com morfologia de ritmo sinusal. As possíveis causas de taquicardia sinusal foram afastadas, confirmando assim o diagnóstico acima. Comentários: O autor reforça a importância da ecocardiografia fetal transvaginal para o diagnóstico e tratamento precoce de arritmias fetais, evitando complicações.

Introduction: The inappropriate sinus tachycardia is rare in the general population, more frequently affects young women, and its etiology is unknow. It is characterized by a persistently elevated cardiac frequency with na exaggerated response to physical activity. Objective: Report a rare case of inappropriate sinus tachycardia in the early phase of pregnancy and emphasize the importance of transvaginal fetal echocardiography. Case report: Pregnant referred due to persistente fetal tachycardia after obstretic ultrasonography. The transvaginal echocardiogram performed at 9 weeks' gestation showed a fetal heart rate of 240 beats min (bpm) with normal conduction from atria to ventricle (1:1)and no signal hydropsy. Digoxin therapy and Flecainide were used with no sucess. Sotatol use was chose when the fetal heart rate (HR) reduced to tolerable levels and then the number of heartbeats normalized at thirty six weeks gestation. The baby was born well at term and developed persistente tachycardia. The electrocardiogram performed showed P-ware morphology of sinus rhythm. Possible causes of sinus tachycardia were excluded, thus confirming the diagnosis above. Comments: The author describes the imortance of transvaginal fetal echocardiography for the diagnosis and early treatment of fetal arrhythmias avoiding complications.

Introducción: La taquicardia sinusal inapropiada es rara en la población en general, predomina mayormente en mujeres jóvenes y su etiología es desconocida. Se caracteriza por una frecuencia cardíaca, persistentemente, elevada con una respuesta exagerada a la actividad física. Objetivo: Relatar un caso raro de taquicardia sinusal inapropiada en fase precoz de la gestación, enfatizando la importancia de la ecocardiografía fetal transvaginal. Relato del caso: Gestante derivada para la realización del ecocardiograma transvaginal por taquicardia fetal persistente. En el examen de nueve semanas, el feto presentaba una FC de 240 latidos por minuto (lpm), con conducción aurículoventricular de uno para uno y sin señales de hidropesía. Se utilizó la digoxina y, posteriormente, el flecainide, ambos sin éxito terapéutico. Iniciado sotatol con reducción gradual y posterior normalización de FC fetal. El parto ocurrió a término, nació bien y evolucionó con taquicardia persistente. El electrocardiograma realizado demostró onda P con morfología de ritmo sinusal. Las posibles causas de taquicardia sinusal se eliminaron, confirmando así el diagnóstico señalado. Comentarios: El autor refuerza la importancia de la ecocardiografía fetal transvaginal para el diagnóstico y tratamiento precoz de arritmias fetales, evitando complicaciones

Investigation on19 patients with sinus tachycardia from atypical asthma / 中国基层医药

Objective To investigate the therapeutic effects of sinus tachycardia patients with atypical asthma.Methods The data of 19 patients with sinus tachycardia resulted from atypical asthma,including clinical data and the treatment results were retrospectively analyzed.Results There were 19 patients received lung function check,among them total 19 patients were atypical asthma whose tachycardia were cured,the heart beating rate was significantly lower after treated [(86.79±3.91) vs (108.89±4.23),t=6.921,P=0.000].Condusion The lung function check was requisite for patients with sinus tachycardia resulted from atypical asthma and the tachycardia can be cured by curing asthma drugs and calcium channel blocking agent.

Prognostic value of heart rate turbulence in patients with chronic heart failure / 中华老年医学杂志

Objective To investigate the prognostic value of heart rate turbulence (HRT) in patients with chronic heart failure (CHF). Methods From October 2006 to May 2009, a total of 96 elderly CHF inpatients were selected, and the clinic data were recorded. Based on the echocardiogram and dynamic electrocardiogram, the differences of sinus HRT index of patients with different cardiac function classification were analyzed. During 9-28 months medical follow-up, the treatment endpoint was death from heart disease. Based on Logisitc regression, the prognostic values of HRT, age, hypertension, diabetes, myocardial infarction (MI), left ventricular ejection fraction, ACEI and β- adrenergic blocker for death of CHF patients were analyzed.Results There was no significant difference in HRT between grade Ⅱ and grade Ⅲ cardiac function (χ~2 = 1.60, P>0. 05), and between grade Ⅲ and grade Ⅳ cardiac function (χ~2 = 1.43, P>0. 05). But there was significant difference in HRT between grade Ⅱ and grade Ⅳ cardiac function patients χ~2 =9.84, P<0. 05), and HRT was weaken in grade Ⅳ group. The average follow-up time was (18. 0±9.6) months. Of all 96 patients, there were 34 dead of heart disease. There were correlations of death of CHF with HRT, low LVEF (≤ 45%), age (≥65 years), diabetes, MI and classification of heart function. Conclusions The sinus HRT in CHF patients has a favorable prognostic value.