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La neumonía puede ser una enfermedad muy grave e incluso potencialmente mortal. Las vacunas pueden ayudar a prevenir algunos tipos de neumonía. Una buena higiene (lavarse las manos con frecuencia), dejar de fumar y mantener el sistema inmune fortalecido mediante actividades físicas regulares y una alimentación saludable son otras formas de reducir el riesgo de desarrollar neumonía.

La mayoría de las veces, el cuerpo filtra los gérmenes del aire que respira. A veces, los gérmenes, como las bacterias, los virus o los hongos; ingresan a los pulmones y causan infecciones. Cuando estos gérmenes ingresan en los pulmones, el sistema inmunológico, que es la defensa natural del cuerpo contra los gérmenes, entra en acción. Las células inmunes atacan a los gérmenes y pueden causar una inflamación en los sacos de aire o alvéolos. La inflamación puede hacer que los sacos de aire se llenen de líquido y de pus y puede provocar los síntomas de la neumonía.

The procedure may be planned ahead of time, or it may be done during an emergency (temporary pacemaker). You will be given medicine to make parts of your body numb or make you sleep during the procedure. You may receive antibiotics to prevent infection and blood thinning medicine to prevent blood clots during the procedure. Different types of pacemakers require different procedures to place them.

Pacemakers are used to treat certain types of arrhythmias, as well as heart failure, a condition that occurs when the heart cannot pump enough blood to the body. Not everyone with an arrhythmia needs a pacemaker.

Pacemakers use low-energy electrical pulses to control the rate and rhythm of your heartbeat. Traditional pacemakers send the electrical pulses through wires, also known as leads. Wireless pacemakers are a newer kind of pacemaker without wires.

The Division of Human Subjects Research (DHSR) provides expertise, leadership, coordination, and guidance in the areas of policy implementation and development for human subjects research.

Osteopetrosis is a rare disorder that causes bones to grow abnormally and become too dense. When this happens, bones can break easily.

Fibrous dysplasia happens when a bone is replaced with other tissues. Bones may become weak, oddly shaped, or broken. Learn more about this rare disease.

Meet the executive leadership team.

NIH and the biomedical research enterprise have a long history of International collaborations with rules of engagement that allow science to advance while also protecting intellectual capital and proprietary information of the participating countries. These rules of engagement also are designed to limit bias in the design, conduct, and reporting of NIH-supported research. This page describes actions that NIH, institutions, and researchers can take to protect U.