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Sudden collapses in the heat in patients on angiotensin type 2 receptor blockers
1Benalla Hospital, Benalla, Victoria, Australia. radfordpnj@gmail.com.
Context:
A clinical case report is presented of some patients taking angiotensin type 2 receptor blockers (AT2RB) who collapsed without warning whilst being active outdoors in the heat.
Issues:
It is not possible to recognise hypotension due to the heat by testing in a controlled environment such as a doctor's office. Many people taking AT2RBs may be thus misdiagnosed and inappropriately treated.
Lessons Learned:
Sudden collapse in a patient on AT2RB who is active in the heat should alert the physician to the possible cause of extreme sensitivity to low-grade volume depletion.
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