UAE heat and humidity can put extra strain on the heart - here are the warning signs

Dubai's sweltering heat and humidity during August continue to pose risks to the heart, according to medical experts. Temperatures hovering around 48°C, coupled with high humidity, can make the heart work harder and faster while dehydration can further strain the cardiovascular system. Dr. Jan Niclas Strickling, Consultant Cardiology at Medcare Hospital Al Safa, explains that the body's attempt to cool down through sweating can become less effective in high humidity, making it harder for the heart to maintain proper circulation.

Dehydration not only reduces blood volume but also alters electrolyte levels, such as sodium and potassium, which are crucial for the heart's electrical activity. For individuals with pre-existing heart conditions, this combination of factors can elevate the risk of abnormal heart rhythms, reduced blood flow to the heart, and even heart attacks.

Dr. Ahmed Sharafeldin, Consultant Interventional Cardiologist at RAK Hospital, cautions that dehydration can contribute to myocardial ischemia, particularly in susceptible patients, leading to acute coronary syndrome or heart attacks. Some heart medications, especially diuretics known as "water pills," can exacerbate dehydration risks, leading to low blood pressure, especially when combined with other heart medications like ACE inhibitors or ARBs.

Patients on these medications should take proactive steps to stay hydrated, as dehydration symptoms may include increased thirst, dry mouth, dark urine, dizziness, fatigue, and palpitations.