In many cases, intracranial pressure causes headache. Hypertension, at times is caused by cerebral edema, high cerebral venous pressure or high cerebrospinal fluid discharge. The conditions that effect the increase of intracranial pressure leads to posturing.
Yes, there is a relationship between the irregular respirations, bradycardia, and BP. Actual damage or increased capillary pressure of capillary walls results to brain edema. In turn, the condition compresses the blood vessels hence limiting the blood flow to the brain, decreased oxygen supply to the brain follows. The brains’ blood supply is directly related to cerebral perfusion pressure, thus, intracranial pressure should be less than arterial blood pressure for the brain to be perfused. In incidences of poor perfusion, brainstem herniation is imminent of which is associated by blood pressure, irregular respirations and bradycardia (Kinsman et al., 2013).
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The Cushing reflex is associated with increased intracranial pressure in the presence of irregular respirations, hypertension and bradycardia.
The medication is also important, hydrochlorothiazide could possibly be the reason as to why the patient vomited. The patient could either be using the drug inappropriately or the side effects associated with the drug (Kothari, 2014).
References
Kinsman, M., Pendleton, C., Quinones-Hinojosa, A., & Cohen-Gadol, A. A. (2013). Harvey Cushing's early experience with the surgical treatment of head trauma. Journal of the History of the Neurosciences , 22 (1), 96-115.
Kothari, N., & Ganguly, B. (2014). Potential drug-drug interactions among medications prescribed to hypertensive patients. Journal of clinical and diagnostic research: JCDR , 8 (11), HC01.
