What Researchers Did
The researchers measured the arterial blood pressure of 10 healthy elite breath-hold divers both at the water's surface and at a depth of 10 meters in freshwater using a new underwater device.
What They Found
The study found that the average arterial blood pressure for the divers was 124/93 mmHg at the surface and 123/94 mmHg at a depth of 10 meters. There were no major statistical differences in blood pressure between measurements taken at the surface and those taken during breath-hold diving at 10 meters. No systolic blood pressure readings above 140 mmHg or diastolic readings above 115 mmHg were recorded.
What This Means for Canadian Patients
This study suggests that healthy individuals engaging in breath-hold diving at moderate depths may not experience significant or dangerous increases in their arterial blood pressure. For Canadian patients who are recreational or professional breath-hold divers, these findings could offer some reassurance regarding cardiovascular safety during such activities. However, individuals with pre-existing heart conditions should always consult their doctor before diving.
Canadian Relevance
No direct Canadian connection identified. The study authors are not Canadian, and the study does not cover a Health Canada-recognized indication for hyperbaric oxygen therapy.
Study Limitations
The findings of this study are limited to the specific environmental conditions and the healthy, elite breath-hold divers tested, and cannot be generalized to other diving scenarios or populations.