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. 2022 Dec 7;19(24):16388.
doi: 10.3390/ijerph192416388.

Cardiovascular Risk Profiles and Pre-Existing Health Conditions of Trekkers in the Solu-Khumbu Region, Nepal

Miriam Haunolder  1   2 , Christian Apel  3   4 , Daniela Bertsch  5 , Carina Cerfontaine  1 , Michael van der Giet  1 , Simone van der Giet  1 , Maren Grass  1 , Nicole Maria Heussen  6   7 , Nina Hundt  1 , Julia Jäger  1 , Christian Kühn  1 , Sonja Musiol  1 , Lisa Timmermann  1 , Knut Wernitz  3 , Ulf Gieseler  8 , Audry Morrison  8   9 , Volker Schöffl  10   11   12   13 , Thomas Küpper  1   8
Affiliations

Cardiovascular Risk Profiles and Pre-Existing Health Conditions of Trekkers in the Solu-Khumbu Region, Nepal

Miriam Haunolder et al. Int J Environ Res Public Health. .

Abstract

Background: High-altitude tourist trekking continues to grow in popularity on the Everest Trek in Nepal. We examined which pre-existing cardiovascular and health conditions these global trekkers had and what health issues they encountered during the trek, be it exacerbations of pre-existing conditions, or new acute ones.

Method: Trekkers (n = 350) were recruited from guesthouses along the Everest Trek, mostly at Tengboche (3860 m). After completing a questionnaire on their health and travel preparation, they underwent a basic physical examination with an interview.

Results: Almost half (45%) had pre-existing conditions, mostly orthopaedic and cardiovascular diseases. The average age was 42.7 years (range 18-76). The average BMI was 23.4 kg/m2, but 21% were overweight. A third were smokers (30%), and 86% had at least one major cardiovascular risk factor. A quarter (25%) were suffering from manifest acute mountain sickness (AMS), and 72% had at least one symptom of AMS. Adequate pre-travel examination, consultation, and sufficient personal preparation were rarely found. In some cases, a distinct cardiovascular risk profile was assessed. Hypertensive patients showed moderately elevated blood pressure, and cholesterol levels were favourable in most cases. No cardiovascular emergencies were found, which was fortunate as timely, sufficient care was not available during the trek.

Conclusion: The results of earlier studies in the Annapurna region should be revalidated. Every trekker to the Himalayas should consult a physician prior to departure, ideally a travel medicine specialist. Preventative measures and education on AMS warrant special attention. Travellers with heart disease or with a pronounced cardiovascular risk profile should be presented to an internal medicine professional. Travel plans must be adjusted individually, especially with respect to adequate acclimatisation time and no physical overloading. With these and other precautions, trekking at high altitudes is generally safe and possible, even with significant pre-existing health conditions. Trekking can lead to invaluable personal experiences. Since organized groups are limited in their flexibility to change their itinerary, individual trekking or guided tours in small groups should be preferred.

Keywords: acute mountain sickness; arrhythmia; cardiovascular risk factors; coronary heart disease; high altitude; trekking.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Blood pressure of the collective.
Figure 2
Figure 2
Pre-existing conditions of the collective (n = 350).
Figure 3
Figure 3
Occurrence of major cardiovascular risk factors (n = 350).
Figure 4
Figure 4
Occurrence of minor cardiovascular risk factors (n = 350).
See this image and copyright information in PMC

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