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Is squatting a triggering factor for stroke in Indians?

S D Chakrabarti1, R Ganguly, S K Chatterjee

  • 1Rotating Intern, Medical College Hospital, Calcutta, India.

Acta Neurologica Scandinavica
|March 21, 2002
PubMed
Summary
This summary is machine-generated.

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Squatting, common in Indian toilets, may trigger strokes by significantly raising blood pressure (BP), especially in hypertensive individuals. This study links morning strokes to squatting posture and elevated BP, highlighting a critical risk factor.

Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Public Health

Background:

  • Previous observations suggested a link between morning strokes and squatting postures, particularly in Indian toilets.
  • This study aimed to validate these observations and identify potential triggers for stroke onset in specific situations.

Purpose of the Study:

  • To investigate the relationship between stroke occurrence, time of day, location, posture, and activity.
  • To assess the impact of squatting on blood pressure in healthy individuals and hypertensive patients.

Main Methods:

  • Part A: Analyzed stroke onset data (100 patients) concerning time, place, posture, and activity.
  • Part B: Measured supine and squatting blood pressure (BP) in 67 healthy volunteers.
  • Part C: Measured supine and squatting BP in 104 treated hypertensive patients.

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Main Results:

  • 52% of strokes occurred in the morning, 86% at home, and 36% in toilets, with 36% linked to squatting, often during defecation.
  • Squatting caused a significant systolic BP rise in healthy individuals but a more pronounced rise in both systolic and diastolic BP in treated hypertensives.
  • Over half of hemorrhagic strokes occurred while subjects were in a squatting position.

Conclusions:

  • The observed correlation between stroke onset and squatting-induced BP changes suggests a significant link.
  • Elevated blood pressure due to squatting appears to be a crucial triggering factor for stroke in at-risk individuals in India.