Management of chronic heart failure in primary care: what evidence do we have for heart failure with preserved systolic function?

Chronic Heart Failure (CHF) is a debilitating illness commonly encountered in primary care. Its prevalence in developing countries is rising as a result of an ageing population, and an escalating epidemic of hypertension, type 2 diabetes and coronary heart disease. CHF can be specifically diagnosed as Heart Failure with Reduced Systolic Function (HF-RSF) or Heart Failure with Preserved Systolic Function (HF-PSF). This paper illustrates a common presentation of HF-PSF in primary care; and critically appraises the evidence in support of its diagnosis, prognosis and management. Regardless of the specific diagnosis, long term management of CHF is intricate as it involves a complex interplay between medical, psychosocial, and behavioural factors. Hence, there is a pressing need for a multidisciplinary team management of CHF in primary care, and this usually takes place within the broader context of an integrated chronic disease management programme. Primary care physicians are ideally suited to lead multidisciplinary teams to ensure better co-ordination, continuity and quality of care is delivered for patients with chronic conditions across time and settings. Given the rising epidemic of cardiovascular risk factors in the Malaysian population, preventive strategies at the primary care level are likely to offer the greatest promise for reducing the growing burden of CHF.

Prescribing of antihypertensive agents in public primary care clinics-is it in accordance with current evidence?

Background: Large population surveys in Malaysia have consistently shown minimal improvement of blood pressure control rates over the last 10 years. Poor adherence to antihypertensive medication has been recognized as a major reason for poor control of hypertension. This study aimed to describe the prescribing pattern of antihypertensive agents in 2 public primary care clinics and assess its appropriateness in relation to current evidence and guidelines. Methods: A cross-sectional survey to describe the prescribing pattern of antihypertensive agents was carried out in 2 public primary care clinics in Selangor from May to June 2009. Hypertensive patients on pharmacological treatment for ≥1 year who attended the clinics within the study period of 7 weeks were selected. Appropriate use of antihypertensive agents was defined based on current evidence and the recommendations by the Malaysian Clinical Practice Guidelines (CPG) on the Management of Hypertension, 2008. Data were obtained from patients’ medical records and were analysed using the SPSS software version 16.0. Results: A total of 400 hypertensive patients on treatment were included. Mean age was 59.5 years (SD ±10.9, range 28 to 91 years), of which 52.8% were females and 47.2% were males. With regards to pharmacotherapy, 45.7% were on monotherapy, 43.3% were on 2 agents and 11.0% were on ≥3 agents. Target blood pressure of <140/90mmHg was achieved in 51.4% of patients on monotherapy, and 33.2% of patients on combination of ≥2 agents. The commonest monotherapy agents being prescribed were β-blockers (atenolol or propranolol), followed by the short-acting calcium channel blocker (nifedipine). The commonest combination of 2-drug therapy prescribed was β-blockers and short-acting calcium channel blocker. Conclusion: This study shows that the prescribing pattern of antihypertensive agents in the 2 primary care clinics was not in accordance with current evidence and guidelines. β-blockers and short-acting preparations were commonly used both as monotherapy and combination treatment. Thiazide diuretics, ACE inhibitors and long acting calcium channel blockers were underutilised in this study, despite robust evidence to support their use. Evidence have also shown that simplifying the number of daily doses is effective in improving adherence, therefore a wider use of generic once daily preparation should be strongly advocated in public primary care clinics.

White coat effect and white coat hypertension: one and the same?

White coat hypertension (WCHT) and white coat effect (WCE) are often thought to be of the same entity. They are in fact different conditions which carry distinctive definitions and prognostic significance. WCHT is diagnosed when office blood pressure (OBP) is ≥140/90 mmHg on at least 3 occasions, while the average daytime or 24-hour blood pressure is <135/85 mmHg. It is common with 15% prevalence in the general population and may account for over 30% of individuals in whom hypertension is diagnosed. Although individuals with WCHT were reported to have a better cardiovascular (CV) prognosis when compared to those with sustained hypertension and masked hypertension; they were also shown to have a greater prevalence of target organ damage (TOD) and metabolic abnormalities than that of normotensive subjects. In contrast, WCE is defined as the transient elevation of OBP induced by the alerting response to a doctor or a nurse. WCE can occur in both normotensive and hypertensive persons; and is not substantially influenced by reassurance and familiarisation. There is conflicting evidence with regards to prognostic significance of WCE, where most data indicated that it does not predict future TOD, CV morbidity or mortality; with some studies showed otherwise. This case scenario aims to solve the diagnostic perplexity with regards to WCHT and WCE, followed by an evidence-based commentary of how to best manage such conditions.

Managing chronic diseases in the Malaysian primary health care- a need for change

Chronic diseases are the major cause of death and disability in Malaysia, accounted for 71% of all deaths and 69% of the total burden of disease. The WHO in its report Preventing Chronic Disease: A Vital Investment has highlighted the inaction of most governments of the low and middle income countries in tackling the problem urgently, is clear and unacceptable. The acute care paradigm is no longer adequate for the changing pattern of diseases in today’s and tomorrow’s world. An evolution of primary health care system beyond the acute care model to embrace the concept of caring for long term health problems is imperative in the wake of the rising epidemic of chronic diseases and its crushing burden resulting in escalating healthcare costs. Compelling evidence from around the world showed that there are innovative and cost-effective community-based interventions to reduce the morbidity and mortality attributable to chronic diseases, but these are rarely translated into high quality population-wide chronic disease care. This paper describes the current situation of chronic disease management in the Malaysian primary care setting – to highlight the need for change, discuss the barriers to the implementation of effective chronic disease management programmes in the community, and consider fundamental solutions needed to instigate the change in our setting.