ACE and susceptibility to pneumonia measurement: In this context, the possible protective effect of antihypertensives on ALRI risk has been at the center of discussions in recent years: In 1996, Sekizawa et al., found a reduction of about a third in the risk of pneumonia manifestation in patients treated with ACE inhibitors (ACEi) and thus emphasized the potentially beneficial effects of the drugs on the prevention of pneumonia [10].