Asthma: General Tools Make an Appointment Refer a Patient Ask a Question Reviewed by David Tinkelman, MD (April 01, 2012) The following interactive tools can be used to help you manage asthma on a day-to-day basis. Asthma Action Plan An action plan is a written, customized plan to help you manage asthma episodes. Using the plan can help you and your family take action to manage your asthma. Learn more about an asthma action plan. Peak Flow Meter A peak flow meter is a small, easy-to-use instrument that measures your peak expiratory flow, and reveals how well your lungs are working. Learn more about a peak flow meter. Helpful Tools for Living With Asthma Clinical Trials For more than 100 years, National Jewish Health has been committed to finding new treatments and cures for diseases. Search our clinical trials.