Climbing Velliangiri? Don’t Ignore Your Heart Health

Every year, thousands of devotees and trekkers undertake the ascent of the Velliangiri Hills in Coimbatore, Tamil Nadu - a seven-peak range rising to approximately 1,840 metres (6,000 feet) above sea level. The trek spans roughly 6 kilometres of steep, rocky terrain with no formal steps or safety railings along significant stretches of the route. While the spiritual significance of this journey is widely acknowledged, its physiological demands remain largely underestimated.

The consequences of this underestimation are documented and recurring. Reports indicate that seven pilgrims died during the 2024 trekking season alone, with breathlessness, sudden cardiac events, and exertion-related collapses cited as primary causes. Forest authorities now formally prohibit individuals with hypertension, diabetes, asthma, or known cardiac conditions from attempting the climb - a restriction that underscores what medical research has consistently established: high-altitude exertion places significant and measurable stress on the cardiovascular system.

For individuals aged 40 and above, particularly those with subclinical or undiagnosed cardiac risk factors, for info  the Velliangiri trek represents a form of acute physiological stress that the heart may not be equipped to handle without prior assessment and preparation.

What Happens to the Heart During High-Altitude Exertion

At altitudes above 1,500 metres, the partial pressure of inspired oxygen begins to decline measurably. Research published in peer-reviewed cardiovascular literature confirms that at elevations comparable to the Velliangiri summit, heart rate and breathing rate increase by approximately 20% and 15% respectively, while arterial oxygen saturation (SpO2) falls below sea-level norms.

The cardiovascular response to this hypoxic environment includes:

●      Acute increases in cardiac output and heart rate driven by sympathetic nervous system activation

●      Elevated systolic blood pressure, compounding risk in individuals with pre-existing hypertension

●      Coronary vasoconstriction combined with reduced oxygen-carrying capacity, increasing myocardial ischemia risk

●      Potential precipitation of arrhythmias, particularly during or after sustained physical exertion

A scientific statement from the American Heart Association notes that the combination of hypoxia with physical exertion, dehydration, and thermal stress - all of which are present during a Velliangiri climb - can precipitate acute coronary syndrome in susceptible individuals. The same statement identifies the risk of sudden cardiac death during high-altitude hiking as approximately four times higher than during equivalent-duration jogging at sea level.

For patients with stable coronary artery disease (CAD), the ischemic threshold at altitude is measurably lower than at sea level. In practical terms, a cardiac patient who tolerates moderate activity without symptoms at sea level may experience angina or silent ischemia at altitude, often without warning.

Who Is at Elevated Risk

The population most at risk during the Velliangiri climb overlaps significantly with the demographic that undertakes it. Middle-aged and older adults, many of whom carry undiagnosed or inadequately managed cardiovascular risk factors, constitute a large proportion of devotees and trekkers.

Key risk categories requiring formal cardiac evaluation before attempting the climb include:

●      Hypertension: Uncontrolled blood pressure is particularly dangerous at altitude. Cold temperatures and reduced oxygen cause further vasoconstriction, raising BP in already-hypertensive individuals. Trekkers with uncontrolled hypertension are at documented risk of stroke and cardiac arrest.

●      Type 2 Diabetes: Autonomic neuropathy in diabetic patients can blunt typical warning symptoms such as chest pain, making silent ischemic events more likely during strenuous exertion.

●      Coronary Artery Disease (CAD): Patients with known or suspected CAD face a significantly reduced ischemic threshold at altitude. Even those who are asymptomatic at rest may decompensate under combined hypoxic and exertional stress.

●      Sedentary individuals above age 45: Deconditioning significantly reduces cardiovascular reserve. Individuals who do not exercise regularly cannot adequately distribute cardiac output during sustained high-intensity activity.

●      Obesity and metabolic syndrome: Studies indicate that the risk of heart attack and stroke in middle-aged, overweight individuals with hypertension is 35% higher than in those with a healthy body weight - a risk that is amplified further by exertional altitude stress.

Warning Signs That Must Not Be Dismissed

Exertional cardiac symptoms are frequently minimised or misattributed - particularly in pilgrimage or trekking contexts, where physical discomfort may be normalised as part of the journey. The following symptoms during or after the climb warrant immediate cessation of activity and medical evaluation:

●      Chest tightness, pressure, or discomfort, even if mild or fleeting

●      Breathlessness disproportionate to the level of exertion

●      Unexplained dizziness, lightheadedness, or near-syncope

●      Palpitations or an irregular heartbeat

●      Jaw, arm, or shoulder pain during exertion

●      Sudden, unusual fatigue without apparent cause

These presentations should not be managed with rest and continuation. They represent potential cardiac warning signs requiring prompt clinical assessment, particularly at an altitude with limited access to emergency care.

Cardiac Preparation: What Is Clinically Indicated

Pre-trek cardiac assessment is not a precautionary formality - it is a clinical necessity for any individual over 40 with one or more cardiovascular risk factors. A structured pre-climb evaluation typically includes:

●       Resting ECG and echocardiogram to assess baseline cardiac function and detect structural abnormalities

●      Treadmill stress test (TMT) to evaluate exercise tolerance and identify inducible ischemia

●      Blood pressure monitoring over a period sufficient to establish stability under exertion

●      HbA1c and fasting glucose for diabetic risk stratification

●      Lipid profile as part of overall cardiovascular risk assessment

Individuals with known cardiac disease should also ensure that their pharmacological regimen is optimised and reviewed by a cardiologist specifically in the context of planned high-altitude exertion. Medication adjustments may be required, particularly for those on beta-blockers, diuretics, or antihypertensives, as these interact with altitude-induced hemodynamic changes.

Gradual physical conditioning over a minimum of four to six weeks prior to the trek - progressive aerobic training, stair climbing, and endurance walks - significantly improves cardiovascular reserve and reduces exertional risk.

For Patients with Reduced Cardiac Reserve

For individuals who have experienced prior cardiac events, undergone revascularisation procedures, or present with chronic symptoms such as exertional angina or reduced exercise tolerance, the Velliangiri trek may not be medically advisable without thorough evaluation and specialist clearance.

Many in this category have already undergone stenting, angioplasty, or bypass surgery and continue to experience residual symptoms. For these patients, improving baseline cardiac function before undertaking any high-exertion activity is a clinical priority.

Enhanced External Counterpulsation (EECP) therapy, a non-invasive, FDA-approved treatment offered at Heal Your Heart, has demonstrated clinically meaningful improvement in exercise capacity, myocardial perfusion, and angina frequency. For patients with chronic stable angina, heart failure, or post-revascularisation residual symptoms, EECP works by improving collateral circulation and reducing cardiac workload - outcomes that are directly relevant to the demands of high-altitude exertion. It is not a substitute for clinical evaluation, but for patients with compromised cardiac reserve who aspire to physically demanding activities, it represents a substantive option for improving functional status.

 Heal Your Heart: Structured Cardiac Assessment for Active Individuals

Heal Your Heart, India's leading EECP treatment centre with over two decades of non-invasive cardiology experience, provides comprehensive cardiac evaluations for individuals planning high-exertion activities including religious treks, mountaineering, and endurance events.

The clinical team offers structured pre-activity cardiac assessments, risk stratification, and personalised guidance - ensuring that devotion and physical aspiration are supported by informed preparation. For those requiring functional cardiac rehabilitation, EECP therapy at Heal Your Heart has helped thousands of patients improve cardiac performance without the risks associated with surgical intervention.

Conclusion

The Velliangiri climb is a test of physical endurance as much as spiritual resolve. Its altitude, gradient, and duration impose cardiovascular demands that the body - particularly an aging or deconditioned cardiovascular system - must be capable of meeting. The increasing incidence of cardiac emergencies and deaths on this route is not coincidental; it reflects a widespread failure to treat exertional cardiac risk with appropriate clinical seriousness.

Pre-trek cardiac evaluation is not an obstacle to devotion. It is the foundation upon which a safe and meaningful ascent is built. Faith provides the resolve - preparation ensures the heart is equal to the climb.

For pre-trek cardiac assessment or to learn about improving cardiac function before undertaking demanding physical activity, consult the specialists at Heal Your Heart.

 For More Info : 9003070065 /64