Final answer:
True, assisted ventilation is required when a patient's spontaneous ventilation is ineffective or absent, to maintain essential breathing and gas exchange.
Step-by-step explanation:
True: It is essential to state the need for assisted ventilation with a bag-valve mask device in breathing/ventilation if the patient's spontaneous ventilation is ineffective or absent. Spontaneous ventilation refers to the natural ability to breathe without the need for external assistance. If spontaneous ventilation is ineffective, meaning that the required gas exchange is not occurring, or completely absent, as in the case of respiratory failure, external support is required to sustain life. Assisted ventilation helps to maintain adequate oxygenation and carbon dioxide removal from the body.
Various lung volumes and capacities provide insight into a person's respiratory health, such as Maximum voluntary ventilation (MVV), which is the greatest volume of air that can be inhaled and exhaled within one minute. Slow vital capacity (SVC) measures the maximum volume of air that can be exhaled slowly after a maximum inhalation. Total lung capacity (TLC) is the maximum amount of air the lungs can hold, whereas Functional residual capacity (FRC) represents the amount of air remaining in the lungs after a normal expiration. Lastly, Residual volume (RV) is the volume of air still in the lungs after a maximal exhalation.