Hypertension in children and adolescents

Antihypertensive drugs use over a 5-year period among children and adolescents in Beijing, China: An observational study

Evidence on the prescription patterns of antihypertensive drug use in children and adolescents in China is scarce. A descriptive analysis of the Beijing Medical Claim Data, which covered over 95% of the urban residents, was conducted to investigate antihypertensive prescribing patterns and trends in children and adolescents aged under 18 from 2009 to 2014 in Beijing, China. An additional meta-analysis of trends in hypertension prevalence was conducted to compare trends with antihypertensive medications.A total of 11,882 patients received at least 1 prescription for antihypertensive drugs from 2009 to 2014. The number of annual antihypertensive users increased from 2009 to 2012, then declined steadily until 2014, which was consistent with the trend of the hypertension prevalence estimated from the meta-analysis. β-receptor blockers, thiazide diuretics, and angiotensin-converting enzyme inhibitors were the 3 most commonly prescribed antihypertensive drugs. More boys took the antihypertensive drugs than girls. For users aged under 3 years, thiazide diuretics, α-receptor blockers, and angiotensin-converting enzyme inhibitors were the most prescribed drugs, while β-receptor blockers, thiazide diuretics were the most used drugs for users above 3 years.In conclusion, antihypertensive drug prescribing for children and adolescents increased from 2009 to 2014, with different characteristics in different subgroups.

[A case of primary aldosteronism in childhood]

Primary aldosteronism is rare in children. We present a case report concerning an 11-year-old girl. She was referred for dizziness, fatigue, muscular weakness, and headaches. The initial evaluation showed hypertension and hypokalemia. Further tests were performed and were compatible with primary aldosteronism. Abdominal CT scanning showed an enlargement of the right adrenal gland. Histology of the removed gland revealed nodular hyperplasia, compatible with unilateral adrenal hyperplasia. Primary aldosteronism is a rare but curable cause of hypertension in children. It should be considered in all patients with hypertension.

Has blood pressure increased in children in response to the obesity epidemic?

The associations between elevated blood pressure and overweight, on one hand, and the increasing prevalence over time of pediatric overweight, on the other hand, suggest that the prevalence of elevated blood pressure could have increased in children over the last few decades. In this article we review the epidemiologic evidence available on the prevalence of elevated blood pressure in children and trends over time. On the basis of the few large population-based surveys available, the prevalence of elevated blood pressure is fairly high in several populations, whereas there is little direct evidence that blood pressure has increased during the past few decades despite the concomitant epidemic of pediatric overweight. However, a definite conclusion cannot be drawn yet because of the paucity of epidemiologic studies that have assessed blood pressure trends in the same populations and the lack of standardized methods used for the measurement of blood pressure and the definition of elevated blood pressure in children. Additional studies should examine if favorable secular trends in other determinants of blood pressure (eg, dietary factors, birth weight, etc) may have attenuated the apparently limited impact of the epidemic of overweight on blood pressure in children.

¿Son los niños hipertensos españoles huérfanos terapéuticos?

INTRODUCTION

According to current guidelines, hypertension in children should be treated with the same drugs as those used in adults, with adjustment of the dose to their body size. The term therapeutic orphans refers to the lack of information on how to use drugs in children. The aim of this study was to investigate whether the information in the International Vademecum (I-V) is sufficient for the correct use of antihypertensive drugs in children.

MATERIAL AND METHOD

We reviewed the data on pediatric dosages of antihypertensive drugs in the I-V (44th and 45th editions). When there were several drugs for the same molecule, the last one marked with the Spanish Ministry of Health and Consumption's logo was selected. When information on a particular drug was not available, the entries for other drugs with the same active principle were reviewed. The information was compared with that provided by the Fourth Report of the National High Blood Pressure Education Program Working Group (NHBPEP).

RESULTS

A total of 111 entries for 41 antihypertensive drugs were reviewed. Information on use in children is available for only 3 diuretics and 2 angiotensin converting enzyme inhibitors. The remaining entries either contain no information or indicate that the effectiveness and safety in children has not been evaluated. Some drugs are contraindicated in children. The Fourth Report of the NHBPEP includes pediatric dosages for 28 antihypertensive drugs. The Food and Drug Administration has authorized 10 antihypertensive drugs for use in children.

CONCLUSIONS

The information in the V-I can be used to determine the correct dosage of only 5 antihypertensive drugs in children, making this age group authentic therapeutic orphans.