Diabetes Management in the Philippines: Clinical Practice Guidelines
Current Philippine Context and Screening Recommendations
The Philippines follows the 2021 Philippine Guidelines on Periodic Health Examination (PhEX), which recommend screening for Type 2 Diabetes using fasting blood sugar (FBS) in healthy adults aged 40 years and older or in those with specified risk factors. 1 HbA1c is considered an acceptable alternative but carries only a conditional recommendation due to uneven accessibility across different regions of the country. 1
The diabetes burden in the Philippines is substantial, with an estimated 4.3 million Filipinos diagnosed with diabetes and 2.8 million remaining undiagnosed as of 2021. 1
Glycemic Management and Treatment Approach
First-Line Therapy
Metformin should be initiated as the first oral medication for glycemic management in addition to lifestyle modification. 2 This recommendation aligns with international standards and Philippine treatment protocols. 1
- Metformin is contraindicated in patients with significantly impaired kidney function (eGFR <30 mL/min/1.73 m²) or gastrointestinal intolerance. 2
- Lifestyle modification remains the cornerstone of initial treatment for ambulatory patients. 2
Second-Line and Combination Therapy
When metformin and lifestyle modifications fail to achieve glycemic targets, other oral or injectable agents and/or insulin should be added. 2
To minimize hypoglycemia risk, avoid sulfonylureas and glinides, and use insulin sparingly. 2 Treatment regimens should be kept as simple as possible to improve adherence. 2
The American Association of Clinical Endocrinology 2022 guidelines provide comprehensive recommendations for antihyperglycemic pharmacotherapy selection based on comorbidities and patient-specific factors. 3
Glycemic Targets and Monitoring
Glycemic targets should be individualized based on overall health status, life expectancy, and hypoglycemia risk, but hyperglycemia leading to symptoms or acute complications should be avoided in all patients. 4
- For most adults, an HbA1c target below 7.0% is generally recommended when achievable safely. 5
- For older adults (≥65 years), glycemic targets should be tailored to minimize hypoglycemia risk, with more lenient targets for those with cognitive impairment or frailty. 2
- Frequent fingerstick glucose monitoring and/or continuous glucose monitoring (CGM) should be used in insulin-treated patients in addition to HbA1c. 2
Hypoglycemia Prevention and Management
Structured diabetes education programs should be provided for all patients at high risk for hypoglycemia. 6 The issue of hypoglycemia must be addressed at every patient contact, particularly for those on insulin or insulin secretagogues. 5
Hypoglycemia Treatment Protocol
- Glucose (15-20 g) is the preferred treatment for conscious individuals with hypoglycemia. 7
- Glucagon preparations that do not require reconstitution should be prescribed over those requiring reconstitution for managing severe outpatient hypoglycemia. 6
- Glucagon should be prescribed for all individuals at significant risk of severe hypoglycemia, with caregivers trained in administration. 7
Technology and Monitoring
Real-time continuous glucose monitoring (CGM) is strongly recommended for individuals with Type 1 diabetes receiving multiple daily injections. 6 CGM should also be considered for outpatients with Type 2 diabetes at high risk for hypoglycemia. 6
Algorithm-driven insulin pumps are conditionally recommended for people with Type 1 diabetes to reduce hypoglycemia risk. 6
Cardiovascular Risk Factor Management
Blood Pressure Control
Target blood pressure should be 140/90 mmHg for adults aged 65-85 years with diabetes. 2 Lower targets (130/80 mmHg) may be considered for high-risk patients with previous stroke or progressive chronic kidney disease, but require careful monitoring. 2
- ACE inhibitors or ARBs should be first-line therapy for hypertension in older adults with diabetes. 2
- If one class is not tolerated, substitute with the other. 2
Lipid Management
Statin therapy is recommended for adults aged 65 years and older with diabetes, with annual lipid profile monitoring. 2 The 2013 ACC/AHA guidelines recommend moderate-intensity statin therapy for primary prevention in persons aged 40-75 years with diabetes and LDL-cholesterol 70-189 mg/dL. 8
High-intensity statin therapy may be reasonable for diabetic patients with estimated 10-year cardiovascular risk ≥7.5%. 8
Lifestyle Interventions
Physical Activity Requirements
Adults with Type 1 or Type 2 diabetes should engage in at least 150 minutes per week of moderate-to-vigorous-intensity aerobic activity, spread over at least 3 days with no more than 2 consecutive days without activity. 9
- Resistance exercise should be performed 2-3 sessions per week on nonconsecutive days. 9
- Prolonged sitting should be minimized, particularly for those with Type 2 diabetes. 9
- Children and adolescents should engage in 60 minutes or more daily of moderate- or vigorous-intensity aerobic activity. 9
Nutrition Therapy
Medical nutrition therapy (MNT) should be adequately covered by insurance as it results in cost-savings and improved outcomes. 7 For older adults with diabetes and frailty, diets rich in protein and energy should be used to prevent malnutrition and weight loss. 2
Restrictive diets should be avoided in older adults at risk for malnutrition; instead, limit simple sugar consumption. 2
Special Populations
Older Adults (≥65 years)
Outpatient diabetes regimens must be designed specifically to minimize hypoglycemia in older adults. 2 For those with cognitive impairment or dementia, medication regimens should be simplified and glycemic targets made more lenient. 2
Cognitive screening should be performed at diagnosis and repeated every 2-3 years after normal results, or annually after borderline results. 2
Depression Screening
Older adults (≥65 years) with diabetes should be considered a high-priority population for depression screening and treatment. 4 Psychosocial screening should be included as part of ongoing medical management. 7
Complications Screening
Annual comprehensive eye examinations should be conducted by an ophthalmologist or optometrist to detect retinal disease. 2 This is particularly important given that diabetic retinopathy is a top cause of preventable blindness in the Philippines. 1
Screening for other complications should be individualized but prioritize those affecting functional status, such as visual and lower-extremity complications. 4
Philippine-Specific Challenges and Considerations
Financial constraints significantly impede diabetes care in the Philippines, with limited insurance coverage and high out-of-pocket costs amplifying disease burden. 1 The national insurance system does not cover comprehensive diabetes care in a preventive model, and most patients rely on out-of-pocket expenses for laboratory procedures and medications. 10
Poor pharmacotherapy adherence due to cost barriers impairs prevention of complications. 10 Cultural preferences for traditional diets high in refined sugar, white rice, and bread present additional challenges for behavioral modification. 10
Diabetic nephropathy contributes to 38% of renal disease cases in the Philippines, highlighting the critical importance of early detection and management. 1
Team-Based Care Approach
Diabetes self-management education (DSME) should be provided according to national standards at diagnosis and as needed thereafter. 7 A multidisciplinary team approach improves outcomes, with the patient at the center of decision-making alongside physicians, educators, nurses, dietitians, pharmacists, and other specialists as needed. 3