The draining lava left long, tube-like caverns. Of the four caves in this particular cluster, only Boyd Cave is now open to hikers. Arnold Ice Cave is filled with ice. Skeleton and Wind Cave were open to hikers until 2007, when they were gated closed to prevent vandalism and protect hibernating bats.
Dyspnea is translated from medical terminology to mean difficult breathing, where some disease, reaction, or other stimulant has caused breathing to be obstructed or otherwiseâ¦ uneasy. Apnea means lack of or stopped breathing.
PND or Paroxysmal Nocturnal Dyspnea is commonly referred to as cardiac asthma. It's characterized by sudden and severe shortness of breath at night that can wake a person up can cause coughing and wheezing. PND is a sign of congestive heart failure and often strikes one or two hours after the person with heart failure has fallen asleep. Specifically, dyspnea, refers to the sensation of difficult or uncomfortable breathing,according to the National Center for Biotechnonoly Information.