Final answer:
In biology, relative bradycardia is the condition when the heart rate is more than 60 beats per minute and less than 100 beats per minute and does not improve with positive pressure ventilation. It occurs when the heart rate falls within the normal range, but the patient still experiences symptoms.
Step-by-step explanation:
In biology, when the heart rate is more than 60 beats per minute and less than 100 beats per minute and does not improve with positive pressure ventilation, it is referred to as a condition called relative bradycardia.
This condition occurs when the heart rate falls within the normal range, but the patient still experiences symptoms such as weakness, fatigue, dizziness, fainting, chest discomfort, palpitations, or respiratory distress.
Most patients remain asymptomatic as long as the heart rate remains above 50 bpm. Relative bradycardia may be caused by inherent factors or external causes, such as abnormalities in the SA or AV node, ischemia to the heart muscle, diseases of the heart vessels or valves, metabolic disorders, pathologies of the endocrine system, electrolyte imbalances, neurological disorders, autoimmune pathologies, over-prescription of beta blocker drugs, recreational drug use, or prolonged bed rest.
Treatment depends on identifying the underlying cause and may involve supplemental oxygen.