PADI Rescue Diver

The diver’s behavior, including the mask on the forehead, regulator out, jerky movements, and keeping the head high, indicates active panic rather than just fatigue. Establishing buoyancy and reassuring the diver are the primary steps; approaching underwater or forcing them to descend would likely worsen their panic and compromise safety.

The priority is getting the unresponsive diver to the surface safely without risking your own safety through an uncontrolled ascent. Rescue breathing underwater is ineffective and wastes critical time, and leaving the diver delays life-saving care.

A demand inhalator valve delivers nearly 100% oxygen because it provides oxygen only when the diver inhales, minimizing the mixing of gas with ambient air. Non-rebreather masks, pocket masks, and nasal cannulas allow more ambient air to mix with the oxygen, resulting in lower overall delivered concentrations.

Marking the last known position and gathering information is critical to coordinating an effective search without endangering additional divers. Sending everyone in unorganized or performing rapid bounce dives creates severe secondary risks, and while calling EMS is important, a local search should be initiated immediately.

The immediate onset of severe neurological and respiratory symptoms upon surfacing, such as paralysis, chest pain, and bloody froth, strongly indicates an Arterial Gas Embolism (AGE) caused by pulmonary barotrauma. Type I DCS primarily presents as joint pain or skin rashes and usually takes longer to manifest, while nitrogen narcosis resolves completely upon ascent.

The standard PADI protocol for an unresponsive, non-breathing diver at the surface is to give two initial breaths followed by one breath every five seconds during the tow. Chest compressions are ineffective in the water, and delaying breathing until reaching the boat severely compromises the victim’s chances of survival.

Stretching the cramped muscle by pulling the fin tip toward you while straightening the leg is the standard and most effective way to relieve a calf cramp underwater. Dropping weights causes an uncontrolled ascent, and continuing to swim or removing the fin increases stress and compromises safety.

An active panicked diver poses a significant danger to the rescuer; stopping out of reach to assess and attempt verbal commands protects the rescuer. Approaching directly or making physical contact while they are thrashing can result in both divers drowning, and pulling them underwater will severely worsen their panic.

Unusually quiet behavior and obsessive equipment checking are signs of psychological stress; addressing this privately allows the diver to voice concerns without embarrassment. Ignoring the signs can lead to in-water panic, while publicly pointing it out or immediately canceling the dive without discussion can unnecessarily escalate the situation.

Removing weights and scuba units during the tow reduces bulk and drag, making it significantly easier to lift the victim out of the water once at the boat or shore. Leaving the gear on makes the exit extremely difficult due to the weight, and deflating BCDs risks losing positive buoyancy at the surface.

An EAP is a site-specific tool designed to facilitate rapid communication and transport to medical care, making local emergency numbers and facility locations essential. While CPR guides or marine life details are useful knowledge, they are not the core logistical components of an EAP.

Providing the alternate air source quickly and establishing physical contact stabilizes the out-of-air diver and prevents them from bolting to the surface. Dropping weights causes an uncontrolled ascent, and giving up your primary regulator can compromise your own safety and control.

The symptoms describe a jellyfish sting; applying white vinegar prevents unfired stinging cells (nematocysts) from discharging, and tweezers safely remove tentacles. Rinsing with fresh water or rubbing will cause more cells to fire, exacerbating the injury.

A circular search using a rope is highly effective in poor visibility and featureless environments because the rope ensures no areas are missed and maintains buddy contact. Compass-based U-patterns or expanding squares are difficult to execute accurately without visual references or in poor visibility, increasing the risk of missing the victim.

The standard CPR protocol for a single rescuer treating an adult is 30 compressions to 2 rescue breaths. While hands-only CPR is sometimes advocated for untrained bystanders in cardiac events, standard protocol for drowning victims requires both compressions and rescue breaths to address hypoxia.

A sudden relief of pain followed by a cold water sensation and vertigo during descent is the classic presentation of a ruptured eardrum. The cold water stimulates the vestibular system in the inner ear, causing intense dizziness and disorientation known as caloric vertigo.

The primary tenet of water rescue is ‘reach, throw, row, go’ because it prioritizes the rescuer’s safety; entering the water puts the rescuer at risk of being grabbed and pulled under by a panicked victim. Speed or equipment protection are secondary concerns compared to preventing the rescuer from becoming a second victim.

After 15 minutes and a recall, the situation is a critical emergency; activating EMS, tracking currents, and assigning surface spotters are vital steps. Diving alone violates safety protocols and risks the rescuer, while moving the boat and dropping an anchor could strike the missing diver or disrupt the search area.

The acronym VENTID (Vision, Ears, Nausea, Twitching, Irritability, Dizziness) is used to remember the signs of CNS oxygen toxicity, which often precede a convulsion. Joint pain indicates DCS, cherry-red lips indicate carbon monoxide poisoning, and euphoria indicates nitrogen narcosis.

Anyone who has aspirated water during a near-drowning event must be evaluated by medical professionals due to the risk of secondary drowning (pulmonary edema), which can be fatal hours after the event. Allowing them to leave or just giving brief oxygen administration does not mitigate this serious physiological risk.