10 Penyebab Tekanan Darah Rendah yang Perlu Diwaspadai, Apa Saja?

10 penyebab tekanan darah rendah yang perlu diwaspadai, apa saja?

Ilustrasi peyebab tekanan darah rendah.

KOMPAS.com – Darah rendah secara sederhana adalah kondisi ketika Anda memiliki tekanan darah lebih rendah dari 90 mm Hg untuk angka atas (sistolik) atau 60 mm Hg untuk angka bawah (diastolik).

Tekanan darah rendah atau hipotensi bisa memiliki penyebab yang bervariasi, berkisar dari dehidrasi hingga kondisi medis yang serius.

Oleh karena itu, sangat penting untuk mengetahui risiko dan faktor penyebab kondisi tekanan darah rendah, agar dapat dihindari atau dicegah sejak dini.

Penyebab tekanan darah rendah

Pengaturan aliran darah internal tubuh terkadang dapat menyebabkan Anda memiliki tekanan darah lebih rendah dari normal.

Tekanan darah bervariasi dari satu orang ke orang lain. Bahkan penurunan sekecil 20 mmHg, dapat menimbulkan masalah bagi sebagian orang.

Dilansir Penn Medicine, tekanan darah rendah yang berat dapat disebabkan oleh kehilangan darah secara tiba-tiba (syok), infeksi berat, serangan jantung, atau reaksi alergi yang parah (anafilaksis).

Hipotensi ortostatik disebabkan oleh perubahan posisi tubuh yang tiba-tiba, seperti beralih dari berbaring ke berdiri.

Selain itu, tekanan darah rendah juga bisa terjadi karena berdiri terlalu lama, yang disebut neurally mediated hypotension. Ini paling sering menyerang orang dewasa muda dan anak-anak.

Sejalan dengan itu, dikutip dari Cleveland Clinic, hipotensi atau tekanan darah rendah dapat terjadi karena berbagai alasan, antara lain:

  1. Hipotensi ortostatik, terjadi ketika Anda berdiri terlalu cepat dan tubuh Anda tidak dapat mengimbangi dengan lebih banyak aliran darah ke otak
  2. Penyakit sistem saraf pusat, seperti parkinson yang memengaruhi cara sistem saraf mengontrol tekanan darah
  3. Volume darah rendah, misalnya kehilangan darah akibat luka parah dapat menyebabkan tekanan darah rendah. Dehidrasi juga dapat menyebabkan volume darah menjadi rendah
  4. Kondisi irama jantung yang tidak teratur (aritmia), emboli paru, serangan jantung, dan paru-paru yang kolaps
  5. Reaksi alergi yang mengancam jiwa (anafilaksis) atau reaksi kekebalan terhadap infeksi berat (sepsis)
  6. Jantung berdetak terlalu cepat atau terlalu lambat, gagal jantung lanjut (otot jantung lemah), atau paru-paru tidak berfungsi sebagaimana mestinya
  7. Alkohol atau narkoba
  8. Kehamilan
  9. Pendarahan atau komplikasi kehamilan lainnya
  10. Suhu ekstrem. Terlalu panas atau terlalu dingin dapat memengaruhi hipotensi dan memperburuk efeknya.

Gejala tekanan darah rendah

Dilansir dari Badan Pelayanan Kesehatan Nasional Britania Raya (NHS), gejala tekanan darah rendah bisa berupa:

  • Sakit kepala ringan atau pusing
  • Merasa sakit
  • Penglihatan kabur
  • Umumnya merasa lemah
  • Kebingungan
  • Pingsan.

Jika mengalami beberapa gejala tersebut di Atas, Anda mungkin mengalami tekanan darah yang rendah.

Ketika gejala itu terjadi saat berdiri atau mengubah posisi secara tiba-tiba, Anda mungkin mengalami hipotensi postural.

Untungnya tekanan darah tinggi bukanlah penyakit yang menular. Artinya Anda tidak bisa mendapatkannya atau menularkannya ke orang lain.

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